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We study the magnetic phases of a non-equilibrium spin chain, where coherent interactions between neighboring lattice sites compete with alternating gain and loss processes. This competition between coherent and incoherent dynamics induces…

量子物理 · 物理学 2020-07-29 Julian Huber , Peter Kirton , Peter Rabl

For a class of typical states, the real-time and real-space dynamics of non-equilibrium density profiles has been recently studied for integrable models, i.e. the spin-1/2 XXZ chain [PRB 95, 035155 (2017)] and the Fermi-Hubbard chain [PRE…

The time evolution of topological systems is an active area of interest due to their expected applications in fault-tolerant quantum computing. Here, we analyze the dynamics of a noninteracting spinless fermion chain in its topological…

强关联电子 · 物理学 2024-10-21 Thomas L. M. Lane , Miklós Horváth , Kristian Patrick

Using the density matrix renormalization group algorithm, we study the model of spinless fermions with nearest-neighbor interaction on a ring in the presence of disorder. We determine the spatial decay of the density induced by a defect…

凝聚态物理 · 物理学 2009-10-28 P. Schmitteckert , U. Eckern

The current-carrying steady-state that arises in the middle of a metallic wire connected to macroscopic leads is characterized regarding its response functions, correlations and entanglement entropy. The spectral function and the dynamical…

强关联电子 · 物理学 2017-08-09 Pedro Ribeiro

In this paper, a dynamical process in a statistical thermodynamic system of spins exhibiting a phase transition is described on a contact manifold, where such a dynamical process is a process that a metastable equilibrium state evolves into…

数学物理 · 物理学 2022-06-14 Shin-itiro Goto

We construct exact steady states of unitary non-equilibrium time evolution in the gapless XXZ spin-1/2 chain where integrability preserves ballistic spin transport at long-times. We characterize the quasi-local conserved quantities…

强关联电子 · 物理学 2017-08-23 Andrea De Luca , Mario Collura , Jacopo De Nardis

We investigate the dynamics of a critical XXZ spin-1/2 chain prepared in an inhomogeneous initial state with different magnetizations on the left and right halves. We simulate the real-time evolution using the time-evolving block decimation…

强关联电子 · 物理学 2013-12-16 Thiago Sabetta , Grégoire Misguich

We study spinless fermions on a finite chain with nearest-neighbor repulsion and in the presence of a Wannier-Stark linearly-varying electric field potential. In the absence of the interaction, the eigenstates are localized for the system's…

强关联电子 · 物理学 2025-02-10 Nair Aucar Boidi , Amnon Aharony , Ora Entin-Wohlman , Karen Hallberg , Cesar Proetto

Using the adaptive time-dependent density-matrix renormalization group method, we study the time evolution of strongly correlated spinless fermions on a one-dimensional lattice after a sudden change of the interaction strength. For certain…

其他凝聚态物理 · 物理学 2007-06-13 S. R. Manmana , S. Wessel , R. M. Noack , A. Muramatsu

We study the spreading of entanglement produced by the time evolution of a local fermionic excitation created above the ground state of the XXZ chain. The resulting entropy profiles are investigated via density-matrix renormalization group…

统计力学 · 物理学 2021-01-13 Matthias Gruber , Viktor Eisler

It was recently shown that entanglement in quantum systems being in a non-equilibrium state can appear at much higher temperatures than in an equilibrium state. However, any system is subject to the natural relaxation process establishing…

量子物理 · 物理学 2015-06-15 Gregory B. Furman , Victor M. Meerovich , Vladimir L. Sokolovsky

We investigate the non-equilibrium relaxation dynamics of a one dimensional system of interacting spinless fermions near the XXZ integrable point. We observe two qualitatively different regimes: close to integrability and for low energies…

量子气体 · 物理学 2015-03-10 Nicolas Nessi , Aníbal Iucci

We derive a general set of Poor Man's scaling equations and analyze the stability of the Luttinger state in a system composed of a finite number N of one dimensional spinless fermionic chains, coupled through a general two body interaction.…

强关联电子 · 物理学 2008-02-03 F. Vistulo de Abreu , B. Doucot

Spatially extended localized spins can interact via indirect exchange interaction through Friedel oscillations in the Fermi sea. In arrays of localized spins such interaction can lead to a magnetically ordered phase. Without external…

介观与纳米尺度物理 · 物理学 2007-10-08 C. Siegert , A. Ghosh , M. Pepper , I. Farrer , D. A. Ritchie , D. Anderson , G. A. C. Jones

We consider the nonequilibrium dynamics of an interacting spin-1/2 fermion gas in a one-dimensional optical lattice after switching off the confining potential. In particular, we study the creation and the time evolution of spatially…

量子气体 · 物理学 2013-05-31 Stefan Kessler , Ian P. McCulloch , Florian Marquardt

The presence of one or more species at some spatial locations but not others is a central matter in ecology. This phenomenon is related to ecological pattern formation. Nonlocal interactions can be considered as one of the mechanisms…

种群与进化 · 定量生物学 2017-12-29 Ozgur Aydogmus

We revisit the out-of-equilibrium physics arising during the unitary evolution of a one-dimensional XXZ spin chain initially prepared in a domain wall state $\vert\psi_0\rangle=\vert\dots \uparrow\uparrow\downarrow\downarrow\dots\rangle$.…

统计力学 · 物理学 2023-09-27 Stefano Scopa , Dragi Karevski

We investigate the contact process on scale-free networks evolving by a stationary dynamics whereby each vertex independently updates its connections with a rate depending on its power. This rate can be slowed down or speeded up by virtue…

概率论 · 数学 2024-09-18 Emmanuel Jacob , Amitai Linker , Peter Mörters

We characterize the particle transport, particle loss, and nonequilibrium steady states in a dissipative one-dimensional lattice connected to reservoirs at both ends. The free-fermion reservoirs are fixed at different chemical potentials,…

量子气体 · 物理学 2023-03-27 A. -M. Visuri , T. Giamarchi , C. Kollath
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