Academic literature on the topic '1D quantum gas'

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Journal articles on the topic "1D quantum gas"

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Guan, Xiwen. "Critical phenomena in one dimension from a Bethe ansatz perspective." International Journal of Modern Physics B 28, no. 24 (2014): 1430015. http://dx.doi.org/10.1142/s0217979214300151.

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This article briefly reviews recent theoretical developments in quantum critical phenomena in one-dimensional (1D) integrable quantum gases of cold atoms. We present a discussion on quantum phase transitions, universal thermodynamics, scaling functions and correlations for a few prototypical exactly solved models, such as the Lieb–Liniger Bose gas, the spin-1 Bose gas with antiferromagnetic spin-spin interaction, the two-component interacting Fermi gas as well as spin-3/2 Fermi gases. We demonstrate that their corresponding Bethe ansatz solutions provide a precise way to understand quantum man
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Laburthe Tolra, B., K. M. O'Hara, J. H. Huckans, et al. "Study of a 1D interacting quantum Bose gas." Journal de Physique IV (Proceedings) 116 (October 2004): 227–32. http://dx.doi.org/10.1051/jp4:2004116010.

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Sato, Jun, Rina Kanamoto, Eriko Kaminishi, and Tetsuo Deguchi. "Quantum states of dark solitons in the 1D Bose gas." New Journal of Physics 18, no. 7 (2016): 075008. http://dx.doi.org/10.1088/1367-2630/18/7/075008.

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Guan, Xi-Wen, and Feng He. "Professor Chen Ping Yang’s early significant contributions to mathematical physics." International Journal of Modern Physics B 33, no. 06 (2019): 1930002. http://dx.doi.org/10.1142/s0217979219300020.

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In the 60s Professor Chen Ping Yang with Professor Chen Ning Yang published several seminal papers on the study of Bethe’s hypothesis for various problems of physics. The works on the lattice gas model, critical behavior in liquid–gas transition, the one-dimensional (1D) Heisenberg spin chain, and the thermodynamics of 1D delta-function interacting bosons are significantly important and influential in the fields of mathematical physics and statistical mechanics. In particular, the work on the 1D Heisenberg spin chain led to subsequent developments in many problems using Bethe’s hypothesis. The
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Kaminishi, Eriko, Jun Sato, and Tetsuo Deguchi. "Recurrence Time in the Quantum Dynamics of the 1D Bose Gas." Journal of the Physical Society of Japan 84, no. 6 (2015): 064002. http://dx.doi.org/10.7566/jpsj.84.064002.

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Marino, E. C., and Flávio I. Takakura. "Massive Quantum Vortex Excitations in a Pure Gauge Abelian Theory in 2 + 1D." International Journal of Modern Physics A 12, no. 23 (1997): 4155–65. http://dx.doi.org/10.1142/s0217751x97002279.

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We introduce and study a pure gauge Abelian theory in 2 + 1D in which massive quantum vortex states do exist in the spectrum of excitations. This theory can be mapped in a three-dimensional gas of point particles with a logarithmic interaction, in the grand-canonical ensemble. We claim that this theory is the 2 + 1D analog of the sine–Gordon, the massive vortices being the counterparts of sine–Gordon solitons. We show that a symmetry breaking, order parameter, similar to the vacuum expectation value of a Higgs field does exist.
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Kinjo, Kayo, Eriko Kaminishi, Takashi Mori, Jun Sato, Rina Kanamoto, and Tetsuo Deguchi. "Quantum Dark Solitons in the 1D Bose Gas: From Single to Double Dark-Solitons." Universe 8, no. 1 (2021): 2. http://dx.doi.org/10.3390/universe8010002.

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We study quantum double dark-solitons, which give pairs of notches in the density profiles, by constructing corresponding quantum states in the Lieb–Liniger model for the one-dimensional Bose gas. Here, we expect that the Gross–Pitaevskii (GP) equation should play a central role in the long distance mean-field behavior of the 1D Bose gas. We first introduce novel quantum states of a single dark soliton with a nonzero winding number. We show them by exactly evaluating not only the density profile but also the profiles of the square amplitude and phase of the matrix element of the field operator
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Bouneb, I., and F. Kerrour. "Nanometric Modelization of Gas Structure, Multidimensional using COMSOL Software." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 4 (2018): 2014. http://dx.doi.org/10.11591/ijece.v8i4.pp2014-2020.

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In structures with GaAs, which are the structures most used, because of their physical and electronic proprieties, nevertheless seems a compromise between the increase of doping and reduced mobility. The use of quantum hetero structures can overcome this limitation by creating a 2D carrier gas. Using the COMSOL software this work present three models: the first model computes the electronic states for the heterojunction AlGaAs/GaAs in 1D dimension, the second model computes the electronic states for the heterojunction AlGaAs/GaAs but in 2D dimension (nanowire) and the third model we permitted
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I., Bouneb, and Kerrour F. "Nanometric Modelization of Gas Structure, Multidimensional using COMSOL Software." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 4 (2018): 2014–20. https://doi.org/10.11591/ijece.v8i4.pp2014-2020.

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In structures with GaAs, which are the structures most used, because of their physical and electronic proprieties, nevertheless seems a compromise between the increase of doping and reduced mobility. The use of quantum hetero structures can overcome this limitation by creating a 2D carrier gas. Using the COMSOL software this work present three models: the first model computes the electronic states for the heterojunction AlGaAs/GaAs in 1D dimension, the second model computes the electronic states for the heterojunction AlGaAs/GaAs but in 2D dimension (nanowire) and the third model we permitted
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Pan, Jun, Hao Shen, and Sanjay Mathur. "One-Dimensional SnO2Nanostructures: Synthesis and Applications." Journal of Nanotechnology 2012 (2012): 1–12. http://dx.doi.org/10.1155/2012/917320.

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Nanoscale semiconducting materials such as quantum dots (0-dimensional) and one-dimensional (1D) structures, like nanowires, nanobelts, and nanotubes, have gained tremendous attention within the past decade. Among the variety of 1D nanostructures, tin oxide (SnO2) semiconducting nanostructures are particularly interesting because of their promising applications in optoelectronic and electronic devices due to both good conductivity and transparence in the visible region. This article provides a comprehensive review of the recent research activities that focus on the rational synthesis and uniqu
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Dissertations / Theses on the topic "1D quantum gas"

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Lee, Robert. "Application of quantum Monte Carlo methods to excitonic and electronic systems." Thesis, University of Cambridge, 2011. https://www.repository.cam.ac.uk/handle/1810/239379.

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The work in this thesis is concerned with the application and development of quantum Monte Carlo (QMC) methods. We begin by proposing a technique to maximise the efficiency of the extrapolation of DMC results to zero time step, finding that a relative time step ratio of 1:4 is optimal. We discuss the post-processing of QMC data and the calculation of accurate error bars by reblocking, setting out criteria for the choice of block length. We then quantify the effects of uncertainty in the correlation length on estimated error bars, finding that the frequency of outliers is significantly increase
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Dubois, Léa. "Dynamique hors d'équilibre d'un gaz de Bosons unidimensionnel étudiée via la mesure spatialement résolue de la distribution des quasiparticules." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASP066.

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Cette thèse présente des études théoriques et expérimentales sur la caractérisation de gaz de bosons unidimensionnels (1D). Pour produire de tels systèmes, un gaz de Rubidium est placé dans un piège magnétique très confinant transversalement, produit par une puce atomique.Contrairement aux systèmes thermodynamiques atteignant un équilibre caractérisé par quelques variables d'état (pression, température), ce système relaxe dans un état plus complexe décrit par une fonction appelée distribution de rapidités. Cette grandeur est accessible expérimentalement : la distribution de rapidités est la di
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Utz, Yannic. "The Effect of In-Chain Impurities on 1D Antiferromagnets." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-217959.

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The thesis is devoted to the study of in-chain impurities in spin 1/2 antiferromagnetic Heisenberg chains (S=1/2 aHC's)---a model which accompanies the research on magnetism since the early days of quantum theory and which is one of the few integrable spin systems. With respect to impurities it is special insofar as an impurity perturbs the system strongly due to its topology: there is no way around the defect. To what extend the one-dimensional picture stays a good basis for the description of real materials even if the chains are disturbed by in-chain impurities is an interesting question w
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Jiménez, Martín Daniel. "Comportamiento bosónico de pares de fermiones con interacción de contacto 1D." Bachelor's thesis, 2019. http://hdl.handle.net/11086/15290.

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Tesis (Lic. en Física)--Universidad Nacional de Córdoba, Facultad de Matemática, Astronomía, Física y Computación, 2019.<br>Para determinar cuán bosónico es el comportamiento de pares de fermiones distinguibles interactuantes con interacción de contacto en un sistema unidimensional continuo se propusieron dos modelos: partículas libres y partículas en una trampa armónica. Para cada uno de ellos se determinó de manera analítica el estado fundamental de un sólo par mediante la resolución de la ecuación de Schrödinguer independiente del tiempo. A partir de dicho estado, se extrajo información ace
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ROSI, SARA. "Interacting Bosons in optical lattices: optimal control ground state production, entanglement characterization and 1D systems." Doctoral thesis, 2015. http://hdl.handle.net/2158/1004929.

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The work presented in this thesis concerns the study of quantum many-body physics by making use Bose-Einstein condensates loaded in optical lattices potentials. The first part describes the development of a new experimental strategy for the production of the degenerate atomic sample, the second part concerns the optimal control ground state production and the entanglement characterization on a systems of interacting Bosons across the superfluid - Mott insulator quantum phase transition, and the third part illustrates the study of the dynamical properties of an array of 1D gases performed via B
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Tsai, Ming-Wei, and 蔡明巍. "Split gate fabrication by electron beam lithography on GaAs/AlGaAs system for 1D quantum wire conductance." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/20258404414329790730.

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Utz, Yannic. "The Effect of In-Chain Impurities on 1D Antiferromagnets: An NMR Study on Doped Cuprate Spin Chains." Doctoral thesis, 2016. https://tud.qucosa.de/id/qucosa%3A30141.

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The thesis is devoted to the study of in-chain impurities in spin 1/2 antiferromagnetic Heisenberg chains (S=1/2 aHC's)---a model which accompanies the research on magnetism since the early days of quantum theory and which is one of the few integrable spin systems. With respect to impurities it is special insofar as an impurity perturbs the system strongly due to its topology: there is no way around the defect. To what extend the one-dimensional picture stays a good basis for the description of real materials even if the chains are disturbed by in-chain impurities is an interesting question w
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Book chapters on the topic "1D quantum gas"

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Matveev, K. A., and L. I. Glazman. "Scattering on an Impurity in a Weakly Interacting 1D Electron Gas." In Quantum Dynamics of Submicron Structures. Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0019-9_13.

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Bruus, Henrik, and Karsten Flensberg. "1D Electron Gases and Luttinger Liquids." In Many–Body Quantum Theory in Condensed Matter Physics. Oxford University PressOxford, 2004. http://dx.doi.org/10.1093/oso/9780198566335.003.0019.

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Abstract The 1D interacting electron gas is very different from its higher dimensional counterparts. The main difference being the breakdown of Fermi liquid theory in 1D. In Chapter 15 we saw that the main achievement of the Fermi liquid theory is that it enables us to picture the elementary excitations in terms of quasi particles. As we shall see in this chapter, the quasi particle excitations are in 1D electron systems replaced by the Luttinger–Tomonaga excitations, a sort of density waves, having a completely different nature. The corresponding electron liquid is denoted the Luttinger liqui
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Kelly, M. J. "The one-dimensional electron gas." In Low-Dimensional Semiconductors. Oxford University PressOxford, 1995. http://dx.doi.org/10.1093/oso/9780198517818.003.0006.

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Abstract The role of 2D systems in elucidating details of quantum transport in semiconductors was a key theme of the previous chapter, which concluded with an investigation of the transition between three and two dimensions. Until recently, 1D systems have been the playground of the theorist; some of the most intractable problems in many-body physics admit analytical or transparent numerical solutions (Lieb and Mattis 1966). It has long been appreciated that an infinitesimal amount of disorder is sufficient to localize all electron states in one dimension (Mott and Twose 1961). Thouless’s idea
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Haldane, F. D. M. "‘Luttinger liquid theory’ of one-dimensional quantum fluids: I. Properties of the Luttinger model and their extension to the general 1D interacting spinless Fermi gas." In Bosonization. WORLD SCIENTIFIC, 1994. http://dx.doi.org/10.1142/9789812812650_0017.

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Haldane, F. D. M. "‘Luttinger liquid theory’ of one-dimensional quantum fluids I: Properties of the Luttinger model and their extension to the general 1D interacting spinless Fermi gas." In Exactly Solvable Models of Strongly Correlated Electrons. WORLD SCIENTIFIC, 1994. http://dx.doi.org/10.1142/9789812798268_0035.

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Chakraborty, Kunal, and Samrat Paul. "Effect of Intra-Band Tunneling on the Performance of Lead-Free Sn-Based Perovskite Solar Cell Using SCAPS-1D Simulator." In Advances in IT Standards and Standardization Research. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-7998-9795-8.ch006.

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This chapter presents the tunneling mechanism of electron and hole in the junction between absorbing layer and electron transport layer (ETL), which has an impact on the performance of devices in terms of quantum efficiency. In the present work, SCAPS-1D simulator is used to understand the effect of tunneling mechanism between the layers numerically. The most promising thin film-based lead-free Perovskite solar cells (PSCs) is the tin-based solar cell, which has tuneable band gap between 1.2 to 1.4 eV, and it can be used as both single junction and tandem structures.
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Shakeel, R. "Fundamental Concepts of Topological Insulators." In Materials Research Foundations. Materials Research Forum LLC, 2024. http://dx.doi.org/10.21741/9781644902851-1.

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The notion of topological insulators was first introduced to explain the concept of Quantum Hall Effect. The Quantum Hall State (QHS) does not disrupt symmetries but showed fundamental properties (like quantized Hall conductivity, the number of conducting edge-mode) that are not affected by smooth changes in different material parameters and are not subject to change if the system goes through the quantum phase-transition. A topological insulator (TI) just like an ordinary insulator has a large energy gap that is separating the highest-filled electronic band from the lowest empty-band. However
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Conference papers on the topic "1D quantum gas"

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Sykes, A. G., D. M. Gangardt, M. J. Davis, and K. V. Kheruntsyan. "Non-Local Pair Correlations and Quasi-Crystalline Phases in a 1D Bose Gas." In Quantum-Atom Optics Downunder. OSA, 2007. http://dx.doi.org/10.1364/qao.2007.qme17.

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Kheruntsyan, K. V., T. Jacqmin, J. Armijo, T. Berrada, and I. Bouchoule. "Sub-Poissonian fluctuations in a 1D Bose gas: from quantum quasi-condensate to the strongly interacting regime." In International Quantum Electronics Conference. OSA, 2011. http://dx.doi.org/10.1364/iqec.2011.i291.

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Bielejec, E. "1D-1D tunneling between vertically coupled GaAs/AlGaAs quantum wires." In PHYSICS OF SEMICONDUCTORS: 27th International Conference on the Physics of Semiconductors - ICPS-27. AIP, 2005. http://dx.doi.org/10.1063/1.1994408.

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Schnell, J. Ph, J. P. Pocholle, E. Barbier, et al. "Investigation of a 1D GaAs-GaAIAs Multiple Quantum Wells Spatial Light Modulator." In Spatial Light Modulators and Applications. Optica Publishing Group, 1988. http://dx.doi.org/10.1364/slma.1988.tha4.

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Semiconductors multiple quantum wells (MQW’s) are promising optical materials for their fast response speed, their tailorable optical properties and their technological compatibility with electronic circuits.
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Kim, S., H. Choi, M. Scherrer, K. Moselund, and C. W. Lee. "Robustness of the topological interface state in a 1D photonic crystal resonator with an air-gap." In 2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). IEEE, 2021. http://dx.doi.org/10.1109/cleo/europe-eqec52157.2021.9542096.

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Greene, B. I., J. F. Mueller, J. Orenstein, D. Rapkine, S. Schmitt-Rink, and M. Thakur. "Phonon-Mediated Optical Nonlinearities in Polydiacetylene." In Nonlinear Optical Properties of Materials. Optica Publishing Group, 1988. http://dx.doi.org/10.1364/nlopm.1988.tuc1.

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Organic molecules and polymers have long been known to exhibit large values of the third-order susceptibility, χ(3). However, in spite of many investigations, the mechanisms governing the nonlinear optical response of these materials are not well understood. Recently, tremendous progress in two related areas has made this problem ripe for further examination. Intense study of polyacetylene and related materials has led to a more complete understanding of the ground state and elementary excitations of conjugated polymer chains,1 while studies of quasi-2D inorganic semiconductors, notably GaAs-A
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Chen, Yunfei, Deyu Li, Jennifer R. Lukes, and Zhonghua Ni. "Monte Carlo Simulation of Thermal Conductivities of Silicon Nanowires." In ASME 2005 Summer Heat Transfer Conference collocated with the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems. ASMEDC, 2005. http://dx.doi.org/10.1115/ht2005-72377.

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One-dimensional (1D) materials such as various kinds of nanowires and nanotubes have attracted considerable attention due to their potential applications in electronic and energy conversion devices. The thermal transport phenomena in these nanowires and nanotubes could be significantly different from that in bulk material due to boundary scattering, phonon dispersion relation change, and quantum confinement. It is very important to understand the thermal transport phenomena in these materials so that we can apply them in the thermal design of microelectronic, photonic, and energy conversion de
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