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We study the evolution of quantum correlations in two-particle discrete-time non-unitary quantum walks on a line with gain and loss. The two particles are initially prepared in a maximally entangled state and evolve independently. Using…

量子物理 · 物理学 2025-05-07 Gene M. M. Itable , Francis N. C. Paraan

Entropy is the distinguishing and most important concept of our efforts to understand and regularize our observations of a very large class of natural phenomena, and yet, it is one of the most contentious concepts of physics. In this…

量子物理 · 物理学 2007-05-23 Elias P. Gyftopoulos

A research program within the scope of theories on "Emergent Quantum Mechanics" is presented, which has gained some momentum in recent years. Via the modeling of a quantum system as a non-equilibrium steady-state maintained by a permanent…

量子物理 · 物理学 2015-01-14 Gerhard Groessing

The interplay between interactions and quenched disorder can result in rich dynamical quantum phenomena far from equilibrium, particularly when many-body localization prevents the system from full thermalization. With the aim of tackling…

无序系统与神经网络 · 物理学 2018-02-14 S. J. Thomson , M. Schiró

We analyze the stochastic evolution and dephasing of a qubit within the quantum jump (QJ) approach. It allows one to treat individual realizations of inelastic processes, and in this way it provides solutions, for instance, to problems in…

统计力学 · 物理学 2015-08-21 J. P. Pekola , Y. Masuyama , Y. Nakamura , J. Bergli , Y. M. Galperin

The integrable system is constrained strictly by the conservation law during the time evolution, and the nearly integrable system or nonintegrable system is also constrained by the conserved parameters (like the constants of motion) with…

统计力学 · 物理学 2017-11-10 Chen-Huan Wu

We investigate the long-term behavior of a random walker evolving on top of the simple symmetric exclusion process (SSEP) at equilibrium, in dimension one. At each jump, the random walker is subject to a drift that depends on whether it is…

概率论 · 数学 2020-10-28 Marcelo R. Hilário , Daniel Kious , Augusto Teixeira

We provide analytical solutions for two types of random walk: generic random walk (GRW) and maximal entropy random walk (MERW) on a Cayley tree with arbitrary branching number, root degree, and number of generations. For MERW, we obtain the…

统计力学 · 物理学 2015-03-19 J. K. Ochab , Z. Burda

The evolution of a system coupled to baths is commonly described by a master equation that, in the long-time limit, yields a steady-state density matrix. However, when the same evolution is unraveled into quantum trajectories, it is…

量子物理 · 物理学 2025-12-16 Bo Xing , Giuliano Chiriacò , Paola Cappellaro , Rosario Fazio , Dario Poletti

We offer theoretical explanations for some recent observations in numerical simulations of quantum random walks (QRW). Specifically, in the case of a QRW on the line with one particle (walker) and two entangled coins, we explain the…

量子物理 · 物理学 2009-12-11 Chaobin Liu , Nelson Petulante

Quantum Steeplechase is the study of a Luttinger liquid (LL) in one dimension in the presence of a finite number of barriers and wells clustered around an origin. The powerful non-chiral bosonization technique (NCBT) is introduced to write…

强关联电子 · 物理学 2018-11-22 Joy Prakash Das , Chandramouli Chowdhury , Girish S. Setlur

Entanglement entropy (EE) of a state is a measure of correlation or entanglement between two parts of a composite system and it may show appreciable change when the ground state (GS) undergoes a qualitative change in a quantum phase…

强关联电子 · 物理学 2022-11-04 Sambunath Das , Dayasindhu Dey , S. Ramasesha , Manoranjan Kumar

Initially developed in the framework of quantum stochastic calculus, the main equations of quantum stochastic filtering were later on derived as the limits of Markov models of discrete measurements under appropriate scaling. In many…

数学物理 · 物理学 2020-08-18 Vassili N. Kolokoltsov

We study the entropy time evolution of a quantum mechanical model, which is frequently used as a prototype for Anderson's localization. Recently Latora and Baranger [V. Latora, M. Baranger, Phys. Rev.Lett. 82, 520(1999)] found that there…

统计力学 · 物理学 2009-10-31 Paolo Grigolini , Marco G. Pala , Luigi Palatella , Roberto Roncaglia

We develop a Landauer-B\"uttiker theory of entropy evolution in time-dependent strongly coupled electron systems. This formalism naturally avoids the problem of system-bath distinction caused by the strong hybridization of central system…

介观与纳米尺度物理 · 物理学 2018-03-12 Anton Bruch , Caio Lewenkopf , Felix von Oppen

A well-designed numerical method for the shallow water equations (SWE) should ensure well-balancedness, nonnegativity of water heights, and entropy stability. For a continuous finite element discretization of a nonlinear hyperbolic system…

数值分析 · 数学 2022-07-18 Hennes Hajduk , Dmitri Kuzmin

In `entropic cosmology', instead of a cosmological constant $\Lambda$, an extra driving term is added to the Friedmann equation and the acceleration equation, taking into account the entropy and the temperature on the horizon of the…

宇宙学与河外天体物理 · 物理学 2013-03-14 Nobuyoshi Komatsu , Shigeo Kimura

This work introduces a construction of conformal processes that combines the theory of branching processes with chordal Loewner evolution. The main novelty lies in the choice of driving measure for the Loewner evolution: given a finite…

概率论 · 数学 2025-08-13 Vivian Olsiewski Healey , Govind Menon

Interactions between a source of light and atoms are ubiquitous in nature. The study of them is interesting on the fundamental level as well as for applications. They are in the core of Quantum Information Processing tasks and in Quantum…

量子物理 · 物理学 2024-01-11 Borhan Ahmadi , Ricard Ravell Rodríguez , Robert Alicki , Michał Horodecki

The maximal entropy moment method (MEM) is systematic solution of the challenging problem: generating extended hydrodynamic equations valid for both dense and rarefied gases. However, simulating MEM suffers from a computational expensive…

流体动力学 · 物理学 2024-02-21 Candi Zheng , Wang Yang , Shiyi Chen