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Journal articles on the topic 'Cold Entropy Field Theory'

Author: Grafiati

Published: 7 June 2025

Last updated: 2 August 2025

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1

Unnikrishnan, S., and Datta V. Gaitonde. "Acoustic, hydrodynamic and thermal modes in a supersonic cold jet." Journal of Fluid Mechanics 800 (July 7, 2016): 387–432. http://dx.doi.org/10.1017/jfm.2016.410.

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Large-eddy simulation data for a Mach 1.3 round jet are decomposed into acoustic, hydrodynamic and thermal components using Doak’s momentum potential theory. The decomposed fields are then analysed to examine the properties of each mode and their dynamics based on the transport equation for the total fluctuating enthalpy. The solenoidal fluctuations highlight hydrodynamic components of the jet and capture the shear layer growth and breakdown process. The acoustic mode exhibits a jittering coherent wavepacket structure in the turbulent region and consequent highly directional downstream radiati

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2

Marov, M. Ya, and A. V. Kolesnichenko. "Constructing an Entropy-Force Model of the Expansion of the Universe due to Gravitationally Induced Production of Dark Matter." Astronomičeskij žurnal 101, no. 5 (2024): 390–407. https://doi.org/10.31857/s0004629924050019.

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In the framework of entropic cosmology and Prigozhin’s gravitational theory about the connection between geometry and matter, providing the production of particles in the cosmological fluid, as well as in the assumption of exchange entropy at the event horizon, a one-liquid model of the evolution of a spatially flat, homogeneous and isotropic Universe is constructed. For its construction the energy conservation equation is derived from the first law of thermodynamics taking into account gravitationally induced creation of matter and exchange energy processes on the visible horizon of the Unive

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3

Ota, Atsuhisa. "Fluctuation-dissipation relation in cosmic microwave background." Journal of Cosmology and Astroparticle Physics 2024, no. 05 (2024): 062. http://dx.doi.org/10.1088/1475-7516/2024/05/062.

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Abstract We study the fluctuation-dissipation relation for sound waves in the cosmic microwave background (CMB), employing effective field theory (EFT) for fluctuating hydrodynamics. Treating sound waves as the linear response to thermal radiation, we establish the fluctuation-dissipation relation within a cosmological framework. While dissipation is elucidated in established linear cosmological perturbation theory, the standard Boltzmann theory overlooks the associated noise, possibly contributing to inconsistencies in Lambda Cold Dark Matter (ΛCDM) cosmology. This paper employs EFT for fluct

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4

Kennedy, Ivan R., and Migdat Hodzic. "Action and Entropy in Heat Engines: An Action Revision of the Carnot Cycle." Entropy 23, no. 7 (2021): 860. http://dx.doi.org/10.3390/e23070860.

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Despite the remarkable success of Carnot’s heat engine cycle in founding the discipline of thermodynamics two centuries ago, false viewpoints of his use of the caloric theory in the cycle linger, limiting his legacy. An action revision of the Carnot cycle can correct this, showing that the heat flow powering external mechanical work is compensated internally with configurational changes in the thermodynamic or Gibbs potential of the working fluid, differing in each stage of the cycle quantified by Carnot as caloric. Action (@) is a property of state having the same physical dimensions as angul

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5

GARCÍA-BELLIDO, JUAN. "DARK MATTER WITH VARIABLE MASSES." International Journal of Modern Physics D 02, no. 01 (1993): 85–95. http://dx.doi.org/10.1142/s0218271893000076.

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String effective theories contain a dilaton scalar field which couples to gravity, matter and radiation. In general, particle masses will have different dilaton couplings. We can always choose a conformal frame in which baryons have constant masses while (nonbaryonic) dark matter have variable masses, in the context of a scalar-tensor gravity theory. We are interested in the phenomenology of this scenario. Dark matter with variable masses could have a measurable effect on the dynamical motion of the halo of spiral galaxies, which may affect cold dark matter models of galaxy formation. As a con

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6

Kolesnichenko, Aleksandr Vladimirovich, and Michail Yakovlevich Marov. "Toward the construction of the entropic-force model of the expansion of the Universe due to the gravitationally-induced production of dark matter and the influence of exchange entropy on the event horizon." Keldysh Institute Preprints, no. 4 (2023): 1–39. http://dx.doi.org/10.20948/prepr-2023-4.

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Within the framework of Prigogin's gravitational theory of the geometry-matter connection that ensures the production of particles in a cosmological fluid, a single-fluid model of the evolution of a spatially flat, homogeneous and isotropic Universe is thermodynamically constructed. In order to obtain it, the continuity equation (energy conservation equation) was derived from the first law of thermodynamics taking into account the gravity-induced creation of matter and energy exchange processes on the visible horizon of the Universe. Based on this equation and the fundamental Friedman equation

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7

Sikora, Marcin, Anna Bajorek, Artur Chrobak, Józef Deniszczyk, Grzegorz Ziółkowski, and Grażyna Chełkowska. "Magnetic Properties and the Electronic Structure of the Gd0.4Tb0.6Co2 Compound." Materials 13, no. 23 (2020): 5481. http://dx.doi.org/10.3390/ma13235481.

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We report on the comprehensive experimental and theoretical studies of magnetic and electronic structural properties of the Gd0.4Tb0.6Co2 compound crystallization in the cubic Laves phase (C15). We present new results and compare them to those reported earlier. The magnetic study was completed with electronic structure investigations. Based on magnetic isotherms, magnetic entropy change (ΔSM) was determined for many values of the magnetic field change (Δμ0H), which varied from 0.1 to 7 T. In each case, the ΔSM had a maximum around room temperature. The analysis of Arrott plots supplemented by

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8

Hertzberg, Mark P. "Entanglement entropy in scalar field theory." Journal of Physics A: Mathematical and Theoretical 46, no. 1 (2012): 015402. http://dx.doi.org/10.1088/1751-8113/46/1/015402.

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9

Calabrese, Pasquale, and John Cardy. "Entanglement entropy and quantum field theory." Journal of Statistical Mechanics: Theory and Experiment 2004, no. 06 (2004): P06002. http://dx.doi.org/10.1088/1742-5468/2004/06/p06002.

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10

Randall, Lisa, Matthew D. Schwartz, and Verónica Sanz. "Entropy-area relations in field theory." Journal of High Energy Physics 2002, no. 06 (2002): 008. http://dx.doi.org/10.1088/1126-6708/2002/06/008.

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11

Calabrese, Pasquale, and John Cardy. "Entanglement entropy and conformal field theory." Journal of Physics A: Mathematical and Theoretical 42, no. 50 (2009): 504005. http://dx.doi.org/10.1088/1751-8113/42/50/504005.

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12

Chirco, Goffredo. "Holographic Entanglement in Group Field Theory." Universe 5, no. 10 (2019): 211. http://dx.doi.org/10.3390/universe5100211.

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This work is meant as a review summary of a series of recent results concerning the derivation of a holographic entanglement entropy formula for generic open spin network states in the group field theory (GFT) approach to quantum gravity. The statistical group-field computation of the Rényi entropy for a bipartite network state for a simple interacting GFT is reviewed, within a recently proposed dictionary between group field theories and random tensor networks, and with an emphasis on the problem of a consistent characterisation of the entanglement entropy in the GFT second quantisation forma

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13

Kabat, Daniel, and Gilad Lifschytz. "de Sitter entropy from conformal field theory." Journal of High Energy Physics 2002, no. 04 (2002): 019. http://dx.doi.org/10.1088/1126-6708/2002/04/019.

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14

Casini, H., and M. Huerta. "Entanglement entropy in free quantum field theory." Journal of Physics A: Mathematical and Theoretical 42, no. 50 (2009): 504007. http://dx.doi.org/10.1088/1751-8113/42/50/504007.

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15

NARNHOFER, HEIDE. "ENTROPY DENSITY FOR RELATIVISTIC QUANTUM FIELD THEORY." Reviews in Mathematical Physics 06, no. 05a (1994): 1127–45. http://dx.doi.org/10.1142/s0129055x94000390.

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We show how the nuclearity condition of Buchholz and Wichmann allows to define in the ground state a local entropy with the desired properties despite the fact that local algebras are type III. Generalization to temperature states is also possible so that thermodynamic functions also exist in the context of relativistic quantum field theory.

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16

Koksma, Jurjen F., Tomislav Prokopec, and Michael G. Schmidt. "Entropy and correlators in quantum field theory." Annals of Physics 325, no. 6 (2010): 1277–303. http://dx.doi.org/10.1016/j.aop.2010.02.016.

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17

Kang, Guo-lian, Shao Li, and Ji-feng Zhang. "Entropy-Based Model for Interpreting Life Systems in Traditional Chinese Medicine." Evidence-Based Complementary and Alternative Medicine 5, no. 3 (2008): 273–79. http://dx.doi.org/10.1093/ecam/nem026.

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Traditional Chinese medicine (TCM) treatsqias the core of the human life systems. Starting with a hypothetical correlation between TCMqiand the entropy theory, we address in this article a holistic model for evaluating and unveiling the rule of TCM life systems. Several new concepts such as acquired life entropy (ALE), acquired life entropy flow (ALEF) and acquired life entropy production (ALEP) are propounded to interpret TCM life systems. Using the entropy theory, mathematical models are established for ALE, ALEF and ALEP, which reflect the evolution of life systems. Some criteria are given

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18

Andersson, Nils, Thomas Celora, Gregory Comer, and Ian Hawke. "A Field-Theory Approach for Modeling Dissipative Relativistic Fluids." Entropy 26, no. 8 (2024): 621. http://dx.doi.org/10.3390/e26080621.

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We develop an action principle for producing a single-fluid two-constituent system with dissipation in general relativity. The two constituents in the model are particles and entropy. The particle flux creation rate is taken to be zero, while the entropy creation rate is non-zero. Building on previous work, it is demonstrated that a new term (the proper time derivative of the matter space “metric”) is required in the Lagrangian in order to produce terms typically associated with bulk and shear viscosity. Equations of motion, entropy creation rate, and energy–momentum–stress tensor are derived.

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19

Gaite, José, and Denjoe O'Connor. "Field theory entropy, theHtheorem, and the renormalization group." Physical Review D 54, no. 8 (1996): 5163–73. http://dx.doi.org/10.1103/physrevd.54.5163.

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20

Brustein, Ram. "Causal Boundary Entropy from Horizon Conformal Field Theory." Physical Review Letters 86, no. 4 (2001): 576–79. http://dx.doi.org/10.1103/physrevlett.86.576.

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21

Carlip, S. "Black hole entropy from horizon conformal field theory." Nuclear Physics B - Proceedings Supplements 88, no. 1-3 (2000): 10–16. http://dx.doi.org/10.1016/s0920-5632(00)00748-9.

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22

Holzhey, Christoph, Finn Larsen, and Frank Wilczek. "Geometric and renormalized entropy in conformal field theory." Nuclear Physics B 424, no. 3 (1994): 443–67. http://dx.doi.org/10.1016/0550-3213(94)90402-2.

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23

Chen, Yi-Xin, and Yong Xiao. "The entropy bound for local quantum field theory." Physics Letters B 662, no. 1 (2008): 71–74. http://dx.doi.org/10.1016/j.physletb.2008.02.045.

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24

Bianchini, D., O. Castro-Alvaredo, B. Doyon, E. Levi, and F. Ravanini. "Entanglement entropy of non-unitary conformal field theory." Journal of Physics A: Mathematical and Theoretical 48, no. 4 (2014): 04FT01. http://dx.doi.org/10.1088/1751-8113/48/4/04ft01.

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25

Carlip, S. "Entropy from conformal field theory at Killing horizons." Classical and Quantum Gravity 16, no. 10 (1999): 3327–48. http://dx.doi.org/10.1088/0264-9381/16/10/322.

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26

Kandrup, Henry E. "Nonequilibrium entropy in classical and quantum field theory." Journal of Mathematical Physics 28, no. 6 (1987): 1398–415. http://dx.doi.org/10.1063/1.527494.

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27

Belahmadi, Essma, and Rachid Bessaih. "Entropy generation analysis of nanofluid natural convection in coaxial cylinders subjected to magnetic field." Thermal Science 23, no. 6 Part A (2019): 3467–79. http://dx.doi.org/10.2298/tsci171223114b.

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This paper concerns with the effect of a magnetic field on the entropy generation due to natural convection of Al2O3-water nanofluid flow between coaxial cylinders of aspect ratio H/D = 2. The inner and outer cylinders are maintained at hot and cold temperatures, respectively. The top and bottom walls are thermally insulated. The finite volume method was used to discretize the mathematical equations. The present results are compared with those found in the literature, which reveal a very good agreement. The influence of dimensionless parameters such as Hartmann number, Rayleigh number, solid v

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28

Daguerre, L., G. Torroba, R. Medina, and M. Solís. "NON RELATIVISTIC QUANTUM FIELD THEORY: DYNAMICS AND IRREVERSIBILITY." Anales AFA 32, no. 4 (2022): 93–98. http://dx.doi.org/10.31527/analesafa.2021.32.4.93.

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We study aspects of quantum field theory at finite density using techniques and concepts from quantum information theory. We focus on massive Dirac fermions with chemical potential in 1+1 space-time dimensions. Using the entanglement entropy on an interval, we construct an entropic c-function that is finite. This c-function is not monotonous,and incorporates the long-range entanglement from the Fermi surface. Motivated by previous works on lattice models,we next compute the Renyi entropies numerically, and find Friedel-type oscillations. Next, we analyze the mutual in-formation as a measure of

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29

Moradpour, H., and M. Valipour. "Generalized Misner–Sharp energy in generalized Rastall theory." Canadian Journal of Physics 98, no. 9 (2020): 853–56. http://dx.doi.org/10.1139/cjp-2019-0492.

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Employing the unified first law of thermodynamics and the field equations of the generalized Rastall theory, we get the generalized Misner–Sharp mass of space–times for which gtt = –grr = –f(r). The obtained result differs from those of the Einstein and Rastall theories. Moreover, using the first law of thermodynamics, the obtained generalized Misner–Sharp mass, and the field equations, the entropy of static spherically symmetric horizons are also addressed in the framework of the generalized Rastall theory. In addition, by generalizing the study to a flat Friedmann–Robertson–Walker (FRW) univ

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30

Jia, Zheng Yuan, and Xia Xia Yang. "Application of Entropy Weight Method and TOPSIS Model in the Cold-Chain Logistics and Distribution Center Location." Advanced Materials Research 569 (September 2012): 693–96. http://dx.doi.org/10.4028/www.scientific.net/amr.569.693.

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Based on system theory thinking and combing the qualitative and quantitative analysis method, this paper analyze the related factors affecting the cold-chain logistics and distribution center location. By building mathematical model for cold-chain logistics and distribution center location, and analyzing an example application, this paper verifies the rationality and feasibility of the model, and cold-chain logistics resource is configured appropriately.

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31

IYER, SAVITRI V., and S. G. RAJEEV. "A MODEL OF TWO-DIMENSIONAL TURBULENCE USING RANDOM MATRIX THEORY." Modern Physics Letters A 17, no. 23 (2002): 1539–50. http://dx.doi.org/10.1142/s0217732302007934.

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We derive a formula for the entropy of two-dimensional incompressible inviscid flow, by determining the volume of the space of vorticity distributions with fixed values for the moments Qk = ∫ ω(x)kd2x. This space is approximated by a sequence of spaces of finite volume, by using a regularization of the system that is geometrically natural and connected with the theory of random matrices. By taking the limit we get a simple formula for the entropy of a vortex field. We predict vorticity distributions of maximum entropy with given mean vorticity and enstrophy; we also predict the cylindrically s

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32

Koksma, Jurjen F., Tomislav Prokopec, and Michael G. Schmidt. "Decoherence and dynamical entropy generation in quantum field theory." Physics Letters B 707, no. 2 (2012): 315–18. http://dx.doi.org/10.1016/j.physletb.2011.12.049.

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33

Bianchini, Davide, Olalla A. Castro-Alvaredo, and Benjamin Doyon. "Entanglement entropy of non-unitary integrable quantum field theory." Nuclear Physics B 896 (July 2015): 835–80. http://dx.doi.org/10.1016/j.nuclphysb.2015.05.013.

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34

Xu, Feng. "Some Results On Relative Entropy in Quantum Field Theory." Communications in Mathematical Physics 374, no. 3 (2019): 1469–82. http://dx.doi.org/10.1007/s00220-019-03367-x.

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35

Kerr, W. C., and M. J. Rave. "Mean-field theory of entropy-driven structural phase transitions." Physical Review B 48, no. 22 (1993): 16234–45. http://dx.doi.org/10.1103/physrevb.48.16234.

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36

He, Jie, Qihang Liu, Zheng Long, et al. "Characteristics of Cavitation Flow for a Regulating Valve Based on Entropy Production Theory." Energies 15, no. 17 (2022): 6480. http://dx.doi.org/10.3390/en15176480.

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A regulating valve is a key control element in the coal liquefaction industry, whose flow field distribution is related to the entropy production. In order to make a quantitative evaluation of the energy loss in the cavitation flow and calculate the magnitude and location of the hydraulic loss in the flow field more accurately, entropy production theory is employed to analyze the flow field in the regulating valve numerically. The entropy production under cavitation condition and its influence on steady-state flow force are also discussed. When the opening of the valve increases, the entropy p

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37

Park, Chanyong. "Review of the holographic Lifshitz theory." International Journal of Modern Physics A 29, no. 24 (2014): 1430049. http://dx.doi.org/10.1142/s0217751x1430049x.

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We review interesting results achieved in recent studies on the holographic Lifshitz field theory. The holographic Lifshitz field theory at finite temperature is described by a Lifshitz black brane geometry. The holographic renormalization together with the regularity of the background metric allows to reproduce thermodynamic quantities of the dual Lifshitz field theory where the Bekenstein–Hawking entropy appears as the renormalized thermal entropy. All results satisfy the desired black brane thermodynamics. In addition, hydrodynamic properties are further reviewed in which the holographic re

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38

Lobashev, Alexander A., Nikita A. Turko, Konstantin V. Ushakov, Maxim N. Kaurkin, and Rashit A. Ibrayev. "Concrete Autoencoder for the Reconstruction of Sea Temperature Field from Sparse Measurements." Journal of Marine Science and Engineering 11, no. 2 (2023): 404. http://dx.doi.org/10.3390/jmse11020404.

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This paper presents a new method for finding the optimal positions for sensors used to reconstruct geophysical fields from sparse measurements. The method is composed of two stages. In the first stage, we estimate the spatial variability of the physical field by approximating its information entropy using the Conditional Pixel CNN network. In the second stage, the entropy is used to initialize the distribution of optimal sensor locations, which is then optimized using the Concrete Autoencoder architecture with the straight-through gradient estimator for the binary mask and with adversarial los

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39

Delavar, Mojtaba Aghajani. "Investigation of Porous Block Porosity on Flow and Entropy Generation inside a T-Micromixer Using Lattice Boltzmann Method." Applied Mechanics and Materials 229-231 (November 2012): 282–86. http://dx.doi.org/10.4028/www.scientific.net/amm.229-231.282.

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In this study a two dimensional thermal Lattice Boltzmann model with nine velocities was used to study the flow pattern and thermal field inside a T-micromixer with a porous block. The effects of porosity of porous block and flow Reynolds number were investigated. The results showed that better mixing between hot and cold flows and more heat transfer to horizontal walls in contact with porous block in lower porosities; due to the fact that in lower porosities the effective thermal conductivity of porous block increases. In lower porosities due to higher mixing rates and thermal gradient the en

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40

LEFLOCH, PHILIPPE G. "HYPERBOLIC BALANCE LAWS WITH ENTROPY ON A CURVED SPACETIME: THE WEAK–STRONG UNIQUENESS THEORY." Journal of Hyperbolic Differential Equations 10, no. 04 (2013): 773–98. http://dx.doi.org/10.1142/s0219891613500288.

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We are interested in nonlinear partial differential equations of hyperbolic type, written as first-order balance laws posed on a curved spacetime, whose unknown is typically a section of the bundle of future-oriented, timelike vectors. We are especially interested in dealing with systems and solutions with low regularity and, to this end, we introduce here the notion of "strictly convex entropy field". We then prove that a system of balance laws endowed with such an entropy admits a symmetrization which, however, may be "degenerate" if the entropy is not uniformly convex or if the constitutive

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41

Rabbani, Hassan. "Cold Entropy Field Theory: A Foundational Framework for Entropy-Driven Space-time Genesis and Thermodynamic Structure Formation." May 6, 2025. https://doi.org/10.5281/zenodo.15348717.

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We propose Cold Entropy Field Theory (CEFT), a novel framework wherein recursive entropy inversions act as generative mechanisms for space-time curvature and structure. We formulate a Lorentz-invariant Lagrangian for the entropy field, derive the corresponding field equations, and simulate internal field evolution dynamics. CEFT predicts observable cold spot anomalies in the Cosmic Microwave Background, modifications to the stochastic gravitational wave background, and horizon-scale entropy fluctuations near black holes. All predictions are quantifiable and falsifiable against existing and for

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42

Prasetyo, I., I. H. Belfaqih, A. B. Wahidin, A. Suroso, and A. Sulaksono. "Minimal length, nuclear matter, and neutron stars." European Physical Journal C 82, no. 10 (2022). http://dx.doi.org/10.1140/epjc/s10052-022-10849-1.

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AbstractIn this paper, we employ one variant of the Generalized Uncertainty Principle (GUP) model, i.e., the Kempf–Mangano–Mann (KMM) model, and discuss the impact of GUP on the EoS of nuclear and neutron star matter based on the relativistic mean field (RMF) model. We input the result in the Serrano–Liška (SL) gravity theory to discuss the corresponding Neutron Star (NS) properties. We have shown that the upper bound for the GUP parameter from nuclear matter properties is $$\beta \le 2\times 10^{-7}$$ β ≤ 2 × 10 - 7 MeV$$^{-2}$$ - 2 . If we used this $$\beta $$ β upper bound to calculate NS m

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43

Bubuianu, Laurenţiu, Erik Nurlan, Julia O. Seti, Sergiu I. Vacaru, and Elşen Veli Veliev. "Nonmetric geometric flows and quasicrystalline topological phases for dark energy and dark matter in $$f(Q)$$ cosmology." European Physical Journal C 84, no. 6 (2024). http://dx.doi.org/10.1140/epjc/s10052-024-13001-3.

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AbstractWe elaborate on nonmetric geometric flow theory and metric-affine gravity with applications in modern cosmology. Two main motivations for our research follow from the facts that (1) cosmological models for f(Q) modified gravity theories, MGTs, are efficient for describing recent observational data provided by the James Webb Space Telescope; and (2) the statistical thermodynamic properties of such nonmetric locally anisotropic cosmological models can be studied using generalizations of the concept of G. Perelman entropy. We derive nonmetric distorted R. Hamilton and Ricci soliton equati

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44

Cacciatori, Sergio L., Fabio Costa, and Federico Piazza. "Renormalized thermal entropy in field theory." Physical Review D 79, no. 2 (2009). http://dx.doi.org/10.1103/physrevd.79.025006.

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45

Cao, Qing-Hong, and Daiki Ueda. "Entropy constraints on effective field theory." Physical Review D 108, no. 2 (2023). http://dx.doi.org/10.1103/physrevd.108.025011.

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46

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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47

Davies, Iain, and Harvey S. Reall. "Dynamical Black Hole Entropy in Effective Field Theory." Journal of High Energy Physics 2023, no. 5 (2023). http://dx.doi.org/10.1007/jhep05(2023)006.

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Abstract In recent work, Hollands, Kovács and Reall have built on previous work of Wall to provide a definition of dynamical black hole entropy for gravitational effective field theories (EFTs). This entropy satisfies a second law of black hole mechanics to quadratic order in perturbations around a stationary black hole. We determine the explicit form of this entropy for the EFT of 4d vacuum gravity including terms in the action with up to 6 derivatives. An open question concerns the gauge invariance of this definition of black hole entropy. We show that gauge invariance holds for the EFT of v

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48

Watson, Christopher N. "Theory of Gravity Dependent on Entropy." Reports in Advances of Physical Sciences 07 (January 2023). http://dx.doi.org/10.1142/s2424942423500068.

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Gravitational redshift decreases the resolution of measurements, causing entropy by increasing the possible microstates of position and momentum for objects within a gravitational field. This is the first paper with a quantitative equation for gravitational entropy, which extends the concept of black hole entropy to any object within a gravitational field. It also provides the first calculation of “inertial entropy,” the entropy of moving objects, by correlating changes in the scale of spacetime due to gravity with those of special relativity. The entropy scale factor (ESF) combines gravitatio

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49

Mukherjee, Jyotirmoy. "Pseudo Entropy in U(1) gauge theory." Journal of High Energy Physics 2022, no. 10 (2022). http://dx.doi.org/10.1007/jhep10(2022)016.

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Abstract We study the properties of pseudo entropy, a new generalization of entanglement entropy, in free Maxwell field theory in d = 4 dimension. We prepare excited states by the different components of the field strengths located at different Euclidean times acting on the vacuum. We compute the difference between the pseudo Rényi entropy and the Rényi entropy of the ground state and observe that the difference changes significantly near the boundary of the subsystems and vanishes far away from the boundary. Near the boundary of the subsystems, the difference between pseudo Rényi entropy and

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Alishahiha, Mohsen, Amin Faraji Astaneh, and M. Reza Mohammadi Mozaffar. "Entanglement entropy for logarithmic conformal field theory." Physical Review D 89, no. 6 (2014). http://dx.doi.org/10.1103/physrevd.89.065023.

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