Results 31 to 40 of about 1,090,701 (353)

Developments in the Tensor Network — from Statistical Mechanics to Quantum Entanglement [PDF]

open access: yesJournal of the Physical Society of Japan, 2021
Tensor networks (TNs) have become one of the most essential building blocks for various fields of theoretical physics such as condensed matter theory, statistical mechanics, quantum information, and quantum gravity.
K. Okunishi, T. Nishino, H. Ueda
semanticscholar   +1 more source

Statistical Mechanics

open access: yesManual for Theoretical Chemistry, 2021
Professor Chen Ning Yang has made seminal and influential contributions in many different areas in theoretical physics. This talk focuses on his contributions in statistical mechanics, a field in which Professor Yang has held a continual interest for ...
Uwe-Jens Wiese, Albert Einstein
semanticscholar   +1 more source

Some speculations about local thermalization of nonequilibrium extended quantum systems

open access: yesCondensed Matter Physics, 2023
We discuss the possibility of defining an emergent local temperature in extended quantum many-body systems evolving out of equilibrium. For the most simple case of free-fermionic systems, we give an explicit formula for the effective temperature in the ...
M. Coppola, D. Karevski
doaj   +1 more source

Exceptional dynamical quantum phase transitions in periodically driven systems

open access: yesNature Communications, 2021
Understanding phase transitions in systems out of equilibrium is a topic of high interest. Here the author discusses the spontaneous antiunitary symmetry breaking leading to exceptional dynamical quantum phase transitions in driven many-body systems.
Ryusuke Hamazaki
doaj   +1 more source

Statistical mechanics for non-Hermitian quantum systems

open access: yesPhysical Review Research, 2023
We present a systematic study of statistical mechanics for non-Hermitian quantum systems. Our work reveals that the stability of a non-Hermitian system necessitates the existence of a single path-dependent conserved quantity, which, in conjunction with ...
Kui Cao, Su-Peng Kou
doaj   +1 more source

Hybrid classical-quantum computing: Applications to statistical mechanics of financial markets [PDF]

open access: yesE3S Web of Conferences, 2021
Hybrid Classical-Quantum computing is now offered by several commercial quantum computers. In this project, a model of financial options, Statistical Mechanics of Financial Markets (SMFM), uses this approach. However, only Classical (super-)computers are
Ingber Lester
doaj   +1 more source

Dynamical indistinguishability and statistics in quantum fluids [PDF]

open access: yesAnnals of Physics 452, 169272 (2023), 2021
For a system to qualify as a quantum fluid, quantum-statistical effects should operate in addition to quantum-mechanical ones. Here, we address the hitherto unexplored dynamical condition for the quantum-statistical effects to be manifested, and consider particle exchange events in the gaslike regime of fluid dynamics as a dynamical process with an ...
arxiv   +1 more source

Gas of Particles Obeying the Monotone Statistics

open access: yesEntropy, 2023
The present note is devoted to the detailed investigation of a concrete model satisfying the block-monotone statistics introduced in a previous paper (joint, with collaborators) of the author.
Francesco Fidaleo
doaj   +1 more source

Relaxation of Multitime Statistics in Quantum Systems [PDF]

open access: yesQuantum, 2023
Equilibrium statistical mechanics provides powerful tools to understand physics at the macroscale. Yet, the question remains how this can be justified based on a microscopic quantum description. Here, we extend the ideas of pure state quantum statistical
Neil Dowling   +4 more
doaj   +1 more source

Contextuality in Classical Physics and Its Impact on the Foundations of Quantum Mechanics

open access: yesEntropy, 2021
It is shown that the hallmark quantum phenomenon of contextuality is present in classical statistical mechanics (CSM). It is first shown that the occurrence of contextuality is equivalent to there being observables that can differentiate between pure and
Fritiof Wallentin
doaj   +1 more source

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