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Journal articles on the topic 'Thermal CFT'

Author: Grafiati
Published: 23 November 2024
Last updated: 31 July 2025

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1

CHOWDHURY, BORUN D. "BLACK HOLES VERSUS FIREWALLS AND THERMO-FIELD DYNAMICS." International Journal of Modern Physics D 22, no. 12 (2013): 1342011. http://dx.doi.org/10.1142/s021827181342011x.

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In this paper, we examine the implications of the ongoing black holes versus firewalls debate for the thermo-field dynamics of black holes by analyzing a conformal field theory (CFT) in a thermal state in the context of anti-de Sitter/CFT. We argue that the thermo-field doubled copy of the thermal CFT should be thought of not as a fictitious system, but as the image of the CFT in the heat bath. In case of strong coupling between the CFT and the heat bath, this image allows for free infall through the horizon and the system is described by a black hole. Conversely, firewalls are the appropriate
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2

Dutta, Suvankar, and Rajesh Gopakumar. "Free fermions and thermal AdS/CFT." Journal of High Energy Physics 2008, no. 03 (2008): 011. http://dx.doi.org/10.1088/1126-6708/2008/03/011.

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3

Dusling, Kevin, Derek Teaney, Clint Young, Johanna Erdmenger, Matthias Kaminski, and Felix Rust. "Quarkonium transport in thermal AdS/CFT." Journal of High Energy Physics 2008, no. 10 (2008): 098. http://dx.doi.org/10.1088/1126-6708/2008/10/098.

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4

Ohya, Satoshi. "Intertwining operator in thermal CFTd." International Journal of Modern Physics A 32, no. 02n03 (2017): 1750006. http://dx.doi.org/10.1142/s0217751x17500063.

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It has long been known that two-point functions of conformal field theory (CFT) are nothing but the integral kernels of intertwining operators for two equivalent representations of conformal algebra. Such intertwining operators are known to fulfill some operator identities — the intertwining relations — in the representation space of conformal algebra. Meanwhile, it has been known that the S-matrix operator in scattering theory is nothing but the intertwining operator between the Hilbert spaces of in- and out-particles. Inspired by this algebraic resemblance, in this paper, we develop a simple
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LEMOS, JOSÉ P. S., and VITOR CARDOSO. "RADIATION GENERATED BY THE INFALL OF A SCALAR PARTICLE IN A SCHWARZSCHILD–ANTI-DE SITTER BACKGROUND." International Journal of Modern Physics A 17, no. 20 (2002): 2767. http://dx.doi.org/10.1142/s0217751x02011941.

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In the context of the AdS/CFT conjecture1, a Schwarzschild-anti-de Sitter (SAdS) black hole may be looked at as a thermal state in the CFT. Perturbing the black hole corresponds in the CFT to perturb the thermal state. We considered an important specific perturbation - the radial infall of a small test particle coupled to a scalar field into a SAdS black hole. We computed the spectra, waveforms and total scalar energy radiated during this process. For small black holes, the spectra is dominated by a resonance, and the waveform by quasinormal ringing2,3,4. For large black holes we find that the
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Gan, Wen-Cong, Fu-Wen Shu, and Meng-He Wu. "Thermal geometry from CFT at finite temperature." Physics Letters B 760 (September 2016): 796–99. http://dx.doi.org/10.1016/j.physletb.2016.07.073.

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7

Li, Lingjie, Dongna Li, Xiaoming Zhu, Kun Zhang, and Yanhu Mu. "Freeze-Thaw Resistance of Thermal Insulating Materials Used in Cold Regions Engineering: A State-of-the-Art Review." Geofluids 2022 (September 23, 2022): 1–11. http://dx.doi.org/10.1155/2022/9015055.

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Thermal insulating materials (TIMs) are widely used in roadways, tunnels, airfields, pipeline systems, and buildings in cold regions to prevent infrastructure from freeze damages and reduce energy consumption. During the period of use in cold regions, however, seasonal freeze-thaw actions can cause degradation of thermal and mechanical properties of TIMs and even malfunctions. Lots of research has been carried out on the durability of TIMs under cyclic freeze-thaw (CFT), but comprehensive reviews are scarce at present. Based on a literature review, the state and development of the test apparat
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8

Pires, Tiago A. de C., João Paulo C. Rodrigues, and Jose J. R. Silva. "Numerical analysis on circular concrete-filled tubular columns subjected to fire." Journal of Structural Fire Engineering 10, no. 1 (2019): 2–23. http://dx.doi.org/10.1108/jsfe-06-2017-0036.

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Purpose Nowadays, circular concrete-filled tubular (CFT) columns are largely used in construction because of structural and architectural advantages such as high load bearing capacity and aesthetic appearance. The behavior of CFT columns at ambient and high temperatures is good; however, there are problems related to their behavior in fire when inserted in a real building structure, as for example, the influence of the restraining to thermal elongation that have to be addressed in order to improve their design. This study aims to present the results of a numerical study on the behavior of CFT
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9

Cao, Xuanmin, Lian Liu, and Hui Liu. "Thermal R-current correlators from AdS/CFT correspondence." Journal of Physics G: Nuclear and Particle Physics 41, no. 5 (2014): 055004. http://dx.doi.org/10.1088/0954-3899/41/5/055004.

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10

Son, Dam T., and Derek Teaney. "Thermal noise and stochastic strings in AdS/CFT." Journal of High Energy Physics 2009, no. 07 (2009): 021. http://dx.doi.org/10.1088/1126-6708/2009/07/021.

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11

Barvinsky, A. O. "Thermal power spectrum in the CFT driven cosmology." Journal of Cosmology and Astroparticle Physics 2013, no. 10 (2013): 059. http://dx.doi.org/10.1088/1475-7516/2013/10/059.

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12

Gan, Wen-Cong, Fu-Wen Shu, and Meng-He Wu. "Emergent geometry, thermal CFT and surface/state correspondence." Physics Letters B 772 (September 2017): 464–70. http://dx.doi.org/10.1016/j.physletb.2017.07.011.

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13

Pradhan, Parthapratim. "CFT and Logarithmic Corrections to the Black Hole Entropy Product Formula." Advances in High Energy Physics 2017 (2017): 1–8. http://dx.doi.org/10.1155/2017/2367387.

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We examine the logarithmic corrections to the black hole (BH) entropy product formula of outer horizon and inner horizon by taking into account the effects of statistical quantum fluctuations around the thermal equilibrium and via conformal field theory (CFT). We argue that, in logarithmic corrections to the BH entropy product formula when calculated using CFT and taking into account the effects of quantum fluctuations around the thermal equilibrium, the formula should not be universal and it also should not be quantized. These results have been explicitly checked by giving several examples.
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14

Irges, Nikos, Antonis Kalogirou, and Fotis Koutroulis. "Thermal Effects in Ising Cosmology." Universe 9, no. 10 (2023): 434. http://dx.doi.org/10.3390/universe9100434.

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We consider a real scalar field in de Sitter background and compute its thermal propagators. We propose that in a dS/CFT context, nontrivial thermal effects as seen by an `outside’ observer can be encoded in the anomalous dimensions of the d=3 Ising model. One of these anomalous dimensions, the critical exponent η, completely fixes a number of cosmological observables, which we compute.
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15

Zhang, Teng, and Ri Guang Jin. "Relationship between Flame-Retardant Property and Structure of Cyclomatrix Phosphazene Polymer." Advanced Materials Research 11-12 (February 2006): 395–98. http://dx.doi.org/10.4028/www.scientific.net/amr.11-12.395.

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A novel phosphazene cyclomatrix network polymer was synthesized via nucleophilic displacement of activated nitro groups of tri(4-nitrophenoxy)tri(phenoxy) cyclotriphosphazene with the hydroxyls of bisphenol A. Then, thermal properties of the polymer was investigated using dynamic thermogravimetric analysis (TGA) in air, pyrolysis and combustion experiments. According to the relation among the pyrolysis residue (CR) at 850°C, the char-forming tendency (CFT) of every structural unit in polymer and the limiting oxygen index (LOI), CFT of the structural unit (-P=N-)3 and the LOI of the polymer wer
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16

Hung, Tran N., and Cao H. Nam. "Holographic thermodynamics of the RegMax AdS black holes." Journal of Physics: Conference Series 3040, no. 1 (2025): 012004. https://doi.org/10.1088/1742-6596/3040/1/012004.

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Abstract We use the AdS/CFT correspondence to investigate the holographic thermodynamic properties of AdS black holes solution in a nonlinear electrodynamic theory known as RegMax theory. Our findings reveal a topological thermodynamic equivalence between thermal states and RegMax AdS black holes in the bulk. Furthermore, by employing the free energy landscape and the thermal potential method, we uncover intriguing phase transition characteristics of the thermal states in conformal field theory.
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17

Wang, Zhongwei, and Yuntao Song. "Thermal Analysis of the ITER TF Feeder CFT and ICF." Journal of Fusion Energy 34, no. 4 (2015): 817–21. http://dx.doi.org/10.1007/s10894-014-9832-0.

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18

Mes, A. K., R. W. Moerman, J. P. Shock, and W. A. Horowitz. "Strongly coupled heavy and light quark thermal motion from AdS/CFT." Annals of Physics 436 (January 2022): 168675. http://dx.doi.org/10.1016/j.aop.2021.168675.

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19

Wang, Anran, Bin Cai, Lili Fu, et al. "Analysis of Pyrolysis Characteristics and Kinetics of Cigar Tobacco and Flue-Cured Tobacco by TG-FTIR." Contributions to Tobacco & Nicotine Research 30, no. 1 (2021): 29–43. http://dx.doi.org/10.2478/cttr-2021-0004.

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Summary Investigation of the detailed pyrolysis characteristics of tobacco raw materials is important for the understanding of product design and consumption. In this work, pyrolysis characteristics and kinetic models of cigar filler tobacco (CFT), cigar wrapper tobacco (CWT), and flue-cured tobacco (FCT) were investigated by using a thermogravimetric analyzer coupled with Fourier-transform infrared spectroscopy (TG-FTIR). The pyrolysis of different tobacco samples could be divided into four stages based on the derivative thermogravimetric analysis (DTG) curves. Flue-cured tobacco underwent a
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20

Groeneveld, Jan Derk, Manfred Burianek, Johannes Birkenstock, Lennart A. Fischer, Robert D. Shannon, and Reinhard X. Fischer. "Synthesis, revised crystal structures, and refractive indices of ABW-type CsMTiO4 (M = Al, Fe, Ga) and ANA-type CsTi1.10Si1.90O6.50, and the determination of the electronic polarizability of 4-coordinated Ti4+." Zeitschrift für Kristallographie - Crystalline Materials 235, no. 11 (2020): 533–51. http://dx.doi.org/10.1515/zkri-2020-0056.

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AbstractSingle crystals of ABW-type CsAlTiO4 (CAT), CsFeTiO4 (CFT), CsGaTiO4 (CGT), and ANA-type CsTi1.1Si1.9O6.5 (CST) were grown and characterized by electron microprobe analyses, single-crystal X-ray diffraction, thermal analyses, and spindle-stage optical investigations to determine the electronic polarizability of 4-coordinated Ti4+, α([4]Ti4+). The crystal structure of CAT was confirmed to crystallize in the highest possible topological symmetry Imma (a = 8.9677(2) Å, b = 5.7322(1) Å, c = 9.9612(3) Å) with tetrahedrally coordinated Al and Ti equally distributed on Wyckoff position 8i. Tw
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21

Buchel, Alex. "Universality of small black hole instability in AdS/CFT." International Journal of Modern Physics D 26, no. 13 (2017): 1750140. http://dx.doi.org/10.1142/s0218271817501401.

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[Formula: see text] Type IIb supergravity compactifications on five-dimensional Einstein manifolds [Formula: see text] realize holographic duals to four-dimensional conformal field theories. Black holes in such geometries are dual to thermal states in these CFTs. When black holes become sufficiently small in (global) [Formula: see text], they are expected to suffer Gregory–Laflamme instability with respect to localization on [Formula: see text]. Previously, the instability was demonstrated for gravitational dual of [Formula: see text] SYM, where [Formula: see text]. We extend stability analysi
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22

Chuttar, Aditya, and Debjyoti Banerjee. "Machine Learning (ML) Based Thermal Management for Cooling of Electronics Chips by Utilizing Thermal Energy Storage (TES) in Packaging That Leverages Phase Change Materials (PCM)." Electronics 10, no. 22 (2021): 2785. http://dx.doi.org/10.3390/electronics10222785.

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Miniaturization of electronics devices is often limited by the concomitant high heat fluxes (cooling load) and maldistribution of temperature profiles (hot spots). Thermal energy storage (TES) platforms providing supplemental cooling can be a cost-effective solution, that often leverages phase change materials (PCM). Although salt hydrates provide higher storage capacities and power ratings (as compared to that of the organic PCMs), they suffer from reliability issues (e.g., supercooling). “Cold Finger Technique (CFT)” can obviate supercooling by maintaining a small mass fraction of the PCM in
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23

Corianò, Claudio, and Stefano Lionetti. "Quantum anomalies and parity-odd CFT correlators for chiral states of matter*." EPJ Web of Conferences 314 (2024): 00026. https://doi.org/10.1051/epjconf/202431400026.

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Chiral currents influence the parity-odd sector of CFT correlators in momentum space, playing a crucial role in the evolution of the quark-gluon plasma in the early universe. We demonstrate that these parity-odd interactions, which couple quarks and gluons to gravitons, can be fully determined in terms of their anomaly content by solving the conformal constraints in momentum space. This process involves a single nonlocal, massless axion-like interaction in the longitudinal channel, which remains protected against thermal and finite density effects.
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24

Joseph, Anosh. "N = 2* Yang-Mills on the Lattice." EPJ Web of Conferences 175 (2018): 08019. http://dx.doi.org/10.1051/epjconf/201817508019.

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The N = 2* Yang-Mills theory in four dimensions is a non-conformal theory that appears as a mass deformation of maximally supersymmetric N = 4 Yang-Mills theory. This theory also takes part in the AdS/CFT correspondence and its gravity dual is type IIB supergravity on the Pilch-Warner background. The finite temperature properties of this theory have been studied recently in the literature. It has been argued that at large N and strong coupling this theory exhibits no thermal phase transition at any nonzero temperature. The low temperature N = 2* plasma can be compared to the QCD plasma. We pro
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25

Zhou, Yilin. "The AdS/CFT duality in Sachdev-Ye-Kitaev model: Clues from dynamics and thermal entropy." Theoretical and Natural Science 95, no. 1 (2025): 94–101. https://doi.org/10.54254/2753-8818/2024.21342.

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With the in-depth subjects chiasma among different research areas, many people are applying concepts and methods in theoretical high-energy physics to condensed matter systems. One of the most intensely studied tools is the Anti-de Sitter space/Conformal Field Theory (AdS/CFT) correspondence. It effectively permits a perturbative treatment of strongly coupled systems. Thus, it has been a focused topic in theoretical physics and high-energy physics. It represents a significant breakthrough in understanding quantum gravity. This paper focuses on the realisation of the duality in Jackiw-Teitelboi
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26

Escobedo, Miguel Ángel. "Medium evolution of a static quark-antiquark pair in the large Nc limit." EPJ Web of Conferences 258 (2022): 05006. http://dx.doi.org/10.1051/epjconf/202225805006.

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We study the transitions between the different color states of a static quark-antiquark pair, singlet and octet, in a thermal medium. This is done non-perturbatively exploiting the infinite mass limit of QCD. This study is interesting because it can be used for future developments within the framework of Effective Field Theories (EFTs) and because it can be combined with other techniques, like lattice QCD or AdS/CFT, to gain non-perturbative information about the evolution of quarkonium in a medium. We also study the obtained expressions in the large Nc limit. This allows us to learn lessons t
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27

Xu, Xiao-Bao, Shan-Quan Lan, Gu-Qiang Li, and Jie-Xiong Mo. "A simple analysis of the mixed-state information metric in AdS3/CFT2." Modern Physics Letters A 34, no. 40 (2019): 1950334. http://dx.doi.org/10.1142/s0217732319503346.

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We compute the quantum information metrics of a thermal CFT on [Formula: see text] perturbed by the scalar primary operators of conformal dimensions [Formula: see text] = 3, 4, 5, 6. In particular, we assume that the Hamiltonians of the mixed states commute with each other and the temperature is fixed. Under these conditions, the evaluation is analogous to the pure state case. Then we apply the method of A. Trivella [Class. Quantum Grav. 34, 105003 (2017)] to calculate the mixed state information metric for the scalar primary operator of conformal dimension [Formula: see text] = 4 holographica
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Park, Chanyong, and Jung Hun Lee. "Nucleon form factors in the nuclear medium." International Journal of Modern Physics A 33, no. 02 (2018): 1850016. http://dx.doi.org/10.1142/s0217751x18500161.

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By using the AdS/CFT correspondence, we investigate various form factors between nucleons and mesons in a nuclear medium. In order to describe a nuclear medium holographically, we take into account the thermal charged AdS geometry with an appropriate IR cutoff. After introducing an anomalous dimension as a free parameter, we investigate how the nucleon’s mass is affected by the change of the anomalous dimension. Moreover, we study how the form factors of nucleons rely on the properties of the nuclear medium. We show that in a nuclear medium with different numbers of proton and neutron, the deg
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Cadoni, Mariano, and Andrea P. Sanna. "Unitarity and Page Curve for Evaporation of 2D AdS Black Holes." Entropy 24, no. 1 (2022): 101. http://dx.doi.org/10.3390/e24010101.

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We explore the Hawking evaporation of two-dimensional anti-de Sitter (AdS2), dilatonic black hole coupled with conformal matter, and derive the Page curve for the entanglement entropy of radiation. We first work in a semiclassical approximation with backreaction. We show that the end-point of the evaporation process is AdS2 with a vanishing dilaton, i.e., a regular, singularity-free, zero-entropy state. We explicitly compute the entanglement entropies of the black hole and the radiation as functions of the horizon radius, using the conformal field theory (CFT) dual to AdS2 gravity. We use a si
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Sheykhi, A., M. H. Dehghani, and M. Kord Zangeneh. "Thermodynamics of Charged Rotating Dilaton Black Branes Coupled to Logarithmic Nonlinear Electrodynamics." Advances in High Energy Physics 2016 (2016): 1–13. http://dx.doi.org/10.1155/2016/3265968.

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We construct a new class of charged rotating black brane solutions in the presence of logarithmic nonlinear electrodynamics with complete set of the rotation parameters in arbitrary dimensions. The topology of the horizon of these rotating black branes is flat, while due to the presence of the dilaton field the asymptotic behavior of them is neither flat nor (anti-)de Sitter [(A)dS]. We investigate the physical properties of the solutions. The mass and angular momentum of the spacetime are obtained by using the counterterm method inspired by AdS/CFT correspondence. We derive temperature, elect
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HUSAIN, VIQAR. "NAKED SINGULARITIES AND THE WILSON LOOP." Modern Physics Letters A 17, no. 15n17 (2002): 955–65. http://dx.doi.org/10.1142/s021773230200693x.

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We give observations about dualities where one of the dual theories is geometric. These are illustrated with a duality between the simple harmonic oscillator and a topological field theory. We then discuss the Wilson loop in the context of the AdS/CFT duality. We show that the Wilson loop calculation for certain asymptotically AdS scalar field space–times with naked singularities gives results qualitatively similar to that for the AdS black hole. In particular, it is apparent that (dimensional) metric parameters in the singular space–times permit a "thermal screening" interpretation for the ua
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LIN, FENG-LI, TOSHIHIRO MATSUO, and DAN TOMINO. "HAGEDORN STRINGS IN AdS3." Modern Physics Letters A 23, no. 17n20 (2008): 1552–64. http://dx.doi.org/10.1142/s0217732308027953.

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Motivated by the possibility of formulating a strings/black hole correspondence in AdS space, we extract the Hagedorn behavior of thermal AdS 3 bosonic string from 1-loop partition function of SL(2,R) WZW model. We find that the Hagedorn temperature is monotonically increasing as the AdS radius shrinks, reaches a maximum of order of string scale set by the unitarity bound of the CFT for internal space. The resulting density of states near the Hagedorn temperature resembles the form as for strings in flat space and is dominated by the space-like long string configurations. We also examine strin
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Bajc, Borut, and Adrian Lugo. "CFT thermal 2-point function." International Journal of Modern Physics A, October 13, 2023. http://dx.doi.org/10.1142/s0217751x23430054.

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34

Hung, Tran N., and Cao H. Nam. "Topological equivalence and phase transition rate in holographic thermodynamics of regularized Maxwell theory." European Physical Journal C 84, no. 8 (2024). http://dx.doi.org/10.1140/epjc/s10052-024-13252-0.

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AbstractUtilizing the holographic dictionary from the proposal that treats Newton’s constant as a thermodynamic variable, we establish a thermodynamic topological equivalence between the AdS black holes in the bulk and the thermal states in the dual CFT. The findings further reveal that the thermodynamic topological characteristics of the RegMax AdS black holes are strongly influenced by the characteristic parameter of the regularized Maxwell theory. Additionally, we investigate the phase transition between low and high entropy thermal states within a canonical ensemble in the dual CFT. Our ob
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Benjamin, Nathan, Jaeha Lee, Hirosi Ooguri, and David Simmons-Duffin. "Universal asymptotics for high energy CFT data." Journal of High Energy Physics 2024, no. 3 (2024). http://dx.doi.org/10.1007/jhep03(2024)115.

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Abstract Equilibrium finite temperature observables of a CFT can be described by a local effective action for background fields — a “thermal effective action”. This effective action determines the asymptotic density of states of a CFT as a detailed function of dimension and spin. We discuss subleading perturbative and nonperturbative corrections to the density, comparing with free and holographic examples. We furthermore show how to use the thermal effective action on more complicated geometries at special locations called “hot spots”. The hot spot idea makes a prediction for a CFT partition f
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Khetrapal, Surbhi. "Chaos and operator growth in 2d CFT." Journal of High Energy Physics 2023, no. 3 (2023). http://dx.doi.org/10.1007/jhep03(2023)176.

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Abstract We study the out-of-time-ordered correlator (OTOC) in a zero temperature 2d large-c CFT under evolution by a Liouvillian composed of the Virasoro generators. A bound was conjectured in [1] on the growth of the OTOC set by the Krylov complexity which is a measure of operator growth. The latter grows as an exponential of time with exponent 2α, which sets an upper bound on the Lyapunov exponent, ΛL≤ 2α. We find that for a two dimensional zero temperature CFT, the OTOC decays exponentially with a Lyapunov exponent which saturates this bound. We show that these Virasoro generators form the
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Rodriguez-Gomez, D., and J. G. Russo. "Thermal correlation functions in CFT and factorization." Journal of High Energy Physics 2021, no. 11 (2021). http://dx.doi.org/10.1007/jhep11(2021)049.

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Abstract We study 2-point and 3-point functions in CFT at finite temperature for large dimension operators using holography. The 2-point function leads to a universal formula for the holographic free energy in d dimensions in terms of the c-anomaly coefficient. By including α′ corrections to the black brane background, we reproduce the leading correction at strong coupling. In turn, 3-point functions have a very intricate structure, exhibiting a number of interesting properties. In simple cases, we find an analytic formula. When the dimensions satisfy ∆i = ∆j + ∆k, the thermal 3-point function
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38

Engelsöy, Julius, and Bo Sundborg. "Tidal excitation as mixing in thermal CFT." Journal of High Energy Physics 2021, no. 8 (2021). http://dx.doi.org/10.1007/jhep08(2021)085.

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Abstract We use mixed correlators in thermal CFT as clean probes of the strong gravity effects in their holographic duals. The dual interpretation of mixing is an inelastic conversion of one field to another field, induced by gravity: tidal excitation. We find an enhanced mixing at high temperatures, corresponding to large AdS black holes, concentrated to small boundary momenta, dual to the deep bulk, where strong gravitational fields are expected. We also find large $$ \mathcal{O}\left(1/{G}_N\right) $$ O 1 / G N tidal conversion in the low temperature phase of the U(N) vector model, strength
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Chattopadhyay, Arghya, Taniya Mandal, and Alessio Marrani. "Freudenthal duality in conformal field theory." Journal of High Energy Physics 2024, no. 11 (2024). http://dx.doi.org/10.1007/jhep11(2024)057.

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Abstract Rotational Freudenthal duality (RFD) relates two extremal Kerr-Newman (KN) black holes (BHs) with different angular momenta and electric-magnetic charges, but with the same Bekenstein-Hawking entropy. Through the Kerr/CFT correspondence (and its KN extension), a four-dimensional, asymptotically flat extremal KN BH is endowed with a dual thermal, two-dimensional conformal field theory (CFT) such that the Cardy entropy of the CFT is the same as the Bekenstein-Hawking entropy of the KN BH itself. Using this connection, we study the effect of the RFD on the thermal CFT dual to the KN extr
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Bhatta, Atanu, and Taniya Mandal. "Exact thermal correlators of holographic CFTs." Journal of High Energy Physics 2023, no. 2 (2023). http://dx.doi.org/10.1007/jhep02(2023)222.

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Abstract We compute the exact retarded Green’s functions in thermal CFTs with chemical potential and angular momenta using holography respectively. We consider the field equations satisfied by the quasi-normal modes in both charged and rotating black holes in AdS spacetime and mapped them to the Heun equations by appropriate changes of variables. The AGT correspondence allows us to find the connection formulae among the solutions of the Heun equations near different singularities by using the crossing relations of the five-point correlators in the Liouville CFT. The connection formulae associa
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He, Peng-Zhang, and Hai-Qing Zhang. "Revisit the entanglement entropy with gravitational anomaly." Journal of High Energy Physics 2023, no. 11 (2023). http://dx.doi.org/10.1007/jhep11(2023)142.

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Abstract In this paper we study the entanglement entropy in the CFT2, whose gravity dual is AdS3 spacetime with a Chern-Simons term. Using the generalized Rindler method, we obtain the Rindler transformation in the two-dimensional planar CFT and compute the entanglement entropy of the CFT with gravitational anomalies. The conditions under which the entanglement entropy may have anomalous contributions is also discussed. In addition, we present a relatively general form of the Rindler AdS metric and compute its thermal entropy, which agrees with the entanglement entropy in the field theory. Mor
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42

Halder, Indranil, and Daniel L. Jafferis. "Double winding condensate CFT." Journal of High Energy Physics 2024, no. 5 (2024). http://dx.doi.org/10.1007/jhep05(2024)189.

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Abstract We conjecture a two-dimensional conformal field theory built out of a linear dilaton and a compact βγ system deformed by winding condensates on each of the compact cycles. In particular, explicit expressions of the residues of the correlation functions are provided. As a worldsheet theory, it describes a stringy black hole in AdS3 (supported by the Kalb-Ramond flux) at the Hawking-Page temperature. It is expected to be connected to the Horowitz-Polchinski-like solution near the Hagedorn temperature of thermal AdS3 and Euclidean BTZ blackhole as we vary the temperature.
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43

Bhatta, Atanu, Shankhadeep Chakrabortty, Taniya Mandal, and Arpit Maurya. "Holographic thermal correlators for hyperbolic CFTs." Journal of High Energy Physics 2023, no. 11 (2023). http://dx.doi.org/10.1007/jhep11(2023)156.

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Abstract We use holography to compute the exact form of retarded Green’s functions for a scalar operator with conformal dimension ∆ in a thermal CFT and in its related counterpart with chemical potential in R1 × H3. In our analysis, we recast the wave equation of a scalar field in the normal form of Heun’s equation in the dual gravity theories described by the AdS hyperbolic blackhole and its charged version. Heun’s equation is identified to the semiclassical limit of the BPZ equation for a five-point correlator with one degenerate field insertion in the Liouville theory on the Riemann sphere.
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44

Allameh, Kuroush, and Edgar Shaghoulian. "Modular invariance and thermal effective field theory in CFT." Journal of High Energy Physics 2025, no. 1 (2025). https://doi.org/10.1007/jhep01(2025)200.

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Abstract We use thermal effective field theory to derive that the coefficient of the first subleading piece of the thermal free energy, c 1, is equal to the coefficient of the subleading piece of the Casimir energy on S 1 × S d−2 for d ≥ 4. We conjecture that this coefficient obeys a sign constraint c 1 ≥ 0 in CFT and collect some evidence for this bound. We discuss various applications of the thermal effective field theory, including placing the CFT on different spatial backgrounds and turning on chemical potentials for U(1) charge and angular momentum. Along the way, we derive the high-tempe
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45

Murugan, M., R. Vijayan, A. Saravanan, and S. Jaisankar. "Influence of Corrugated Booster Reflectors in a Centrally Finned Twist Inserted Solar Thermal Collector on Heat Transfer and Thermal Performance Characteristics." Journal of Heat Transfer 141, no. 6 (2019). http://dx.doi.org/10.1115/1.4043172.

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In this present work, the influence of corrugated booster reflectors (CBR) in a centrally finned twist (CFT) inserted solar thermal collector (SC) on heat transfer and thermal performance characteristics has been approached experimentally. The experimental trials have been made with two different twist ratios (Y = 3 and 6) for typical twist (TT) and CFT under same working conditions. The results were compared with the plain tube SC with CBR plain and also with the plain tube SC with flat booster reflectors (FBR plain). The experimental result of the CBR plain has been verified with the standar
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46

Gong, Ting-Feng, Jie Jiang, and Ming Zhang. "Holographic thermodynamics of rotating black holes." Journal of High Energy Physics 2023, no. 6 (2023). http://dx.doi.org/10.1007/jhep06(2023)105.

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Abstract We provide mass/energy formulas for the extended thermodynamics, mixed thermodynamics, and holographic conformal field theory (CFT) thermodynamics for the charged and rotating Kerr-Newman Anti-de Sitter black holes. Then for the CFT thermal states dual to the black hole, we find the first-order phase transitions and criticality phenomena in the canonical ensemble with fixed angular momentum, volume, and central charge. We observe that the CFT states cannot be analogous to the Van der Waals fluids, despite the critical exponents falling into the universality class predicted by the mean
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47

Choo, Kenny, Bastien Lapierre, Clemens Kuhlenkamp, Apoorv Tiwari, Titus Neupert, and Ramasubramanian Chitra. "Thermal and dissipative effects on the heating transition in a driven critical system." SciPost Physics 13, no. 5 (2022). http://dx.doi.org/10.21468/scipostphys.13.5.104.

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We study the dissipative dynamics of a periodically driven inhomogeneous critical lattice model in one dimension. The closed system dynamics starting from pure initial states is well-described by a driven Conformal Field Theory (CFT), which predicts the existence of both heating and non-heating phases in such systems. Heating is inhomogeneous and is manifested via the emergence of black-hole like horizons in the system. The robustness of this CFT phenomenology when considering thermal initial states and open systems remains elusive. First, we present analytical results for the Floquet CFT time
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48

Caggioli, Stefania, Francesco Gentile, Domenico Seminara, and Erik Tonni. "Holographic thermal entropy from geodesic bit threads." Journal of High Energy Physics 2024, no. 7 (2024). http://dx.doi.org/10.1007/jhep07(2024)088.

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Abstract The holographic bit threads are an insightful tool to investigate the holographic entanglement entropy and other quantities related to the bipartite entanglement in AdS/CFT. We mainly explore the geodesic bit threads in various static backgrounds, for the bipartitions characterized by either a sphere or an infinite strip. In pure AdS and for the sphere, the geodesic bit threads provide a gravitational dual of the map implementing the geometric action of the modular conjugation in the dual CFT. In Schwarzschild AdS black brane and for the sphere, our numerical analysis shows that the f
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Hua, Yu, Ibrahim Al Keyyam, Yangsu Xie, and Xinwei Wang. "Development of complex-modeling with Fourier transform (CFT) for ultrafast simulation of transient energy transport." Journal of Applied Physics 138, no. 1 (2025). https://doi.org/10.1063/5.0275419.

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Solving transient energy transport is crucial for accurately predicting the behavior of materials and devices during thermal cycling, pulsed heating, and transient operational states where heat generation and dissipation rates vary over time. Traditional methods, like the finite difference and element methods, discretize space and time and update temperature values at each grid point iteratively over time steps. Its straightforward implementation makes it popular for solving heat transfer problems. However, when high temporal and spatial resolutions or prolonged heating durations are required,
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50

Erdmenger, Johanna, Matthias Kaminski, and Felix Rust. "Isospin diffusion in thermal AdS/CFT correspondence with flavor." Physical Review D 76, no. 4 (2007). http://dx.doi.org/10.1103/physrevd.76.046001.

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