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We investigate the short-time evolution of the half filled one-dimensional extended Hubbard model in the strong-coupling regime, driven by a transient laser pump. Combining twisted boundary conditions with the time-dependent Lanczos…

强关联电子 · 物理学 2020-01-31 Can Shao , Takami Tohyama , Hong-Gang Luo , Hantao Lu

Using the time-dependent Lanczos method, we study the non-equilibrium dynamics of the one-dimensional ionic-mass imbalanced Hubbard chain driven by a quantum quench of the on-site Coulomb interaction, where the system is prepared in the…

强关联电子 · 物理学 2023-05-30 Zhuotao Xie , Ming Zhao , Hantao Lu , Zhongbing Huang , Gregory A. Fiete , Xiang Hu , Liang Du

Interaction quenches in strongly correlated electron systems provide a powerful route to probe nonequilibrium many-body dynamics. For the Hubbard model, nonequilibrium dynamical mean-field theory has revealed coherent post-quench…

强关联电子 · 物理学 2026-01-30 Sankha Subhra Bakshi , Gia-Wei Chern

We show that the non-equilibrium time-evolution after interaction quenches in the one dimensional, integrable Hubbard model exhibits a dynamical transition in the half-filled case. This transition ceases to exist upon doping. Our study is…

强关联电子 · 物理学 2013-03-01 Simone A. Hamerla , Götz S. Uhrig

We study the dynamics of the entanglement spectrum, that is the time evolution of the eigenvalues of the reduced density matrices after a bipartition of a one-dimensional spin chain. Starting from the ground state of an initial Hamiltonian,…

统计力学 · 物理学 2014-06-26 G. Torlai , L. Tagliacozzo , G. De Chiara

We study the time evolution of a half-filled Hubbard layer coupled to a magnon bath after a quench of the Hubbard interaction. Qualitatively different regimes, regarding the asymptotic long-time dynamics, are identified and characterized…

强关联电子 · 物理学 2017-06-07 Igor V. Blinov , Pedro Ribeiro , A. N. Rubtsov

We use the Quench Action approach to study the non-equilibrium dynamics after a quantum quench in the Hubbard model in the limit of infinite interaction. We identify a variety of low-entangled initial states for which we can directly…

统计力学 · 物理学 2017-11-03 Bruno Bertini , Elena Tartaglia , Pasquale Calabrese

The one-dimensional Fermi-Hubbard model is used as testbed for strong global parameter quenches. With the aid of iterated equations of motion in combination with a suitable scalar product for operators we describe the dynamics and the…

强关联电子 · 物理学 2018-09-12 Philip Bleicker , Götz S. Uhrig

The coherent quantum evolution of a one-dimensional many-particle system after sweeping the Hamiltonian through a critical point is studied using a generalized quantum Ising model containing both integrable and non-integrable regimes. It is…

强关联电子 · 物理学 2015-05-13 Frank Pollmann , Subroto Mukerjee , Andrew G. Green , Joel E. Moore

We investigate the formation of charge and spin ordering by starting from a non-interacting state and studying how it evolves in time under a Hamiltonian with finite electronic interactions. We consider the one-dimensional, half-filled…

强关联电子 · 物理学 2024-02-21 Isaac M. Carvalho , Helena Bragança , Walber H. Brito , Maria C. O. Aguiar

We study a nonequilibrium dynamics of a one-dimensional spin-imbalanced Fermi-Hubbard model following a quantum quench of on-site interaction, realizable, for example, in Feshbach-resonant atomic Fermi gases. We focus on the post-quench…

量子气体 · 物理学 2017-01-26 Xiao Yin , Leo Radzihovsky

Particle entanglement provides information on quantum correlations in systems of indistinguishable particles. Here, we study the one particle entanglement entropy for an integrable model of spinless, interacting fermions both at equilibrium…

The relaxation of uniform quantum systems with finite-range interactions after a quench is generically driven by the ballistic propagation of long-lived quasi-particle excitations triggered by a sufficiently small quench. Here we…

量子气体 · 物理学 2018-02-07 Irénée Frérot , Piero Naldesi , Tommaso Roscilde

The non-equilibrium dynamics of an isolated quantum system after a sudden quench to a dynamical critical point is expected to be characterized by scaling and universal exponents due to the absence of time scales. We explore these features…

统计力学 · 物理学 2015-11-04 Anna Maraga , Alessio Chiocchetta , Aditi Mitra , Andrea Gambassi

Using a Luttinger liquid theory we investigate the time evolution of the particle density of a one-dimensional fermionic system with open boundaries and subject to a finite duration quench of the inter-particle interaction. We provide…

强关联电子 · 物理学 2016-08-16 S. Porta , F. M. Gambetta , F. Cavaliere , N. Traverso Ziani , M. Sassetti

We study the temporal evolution of the entanglement hamiltonian of an interval after a global quantum quenchin free lattice models in one spatial dimension. In a harmonic chain we explore a quench of the frequency parameter. In a chain of…

统计力学 · 物理学 2020-01-01 Giuseppe Di Giulio , Raul Arias , Erik Tonni

We investigate the unitary evolution following a quantum quench in quantum spin models possessing a (nearly) flat band in the linear excitation spectrum. Inspired by the perspective offered by ensembles of individually trapped Rydberg…

强关联电子 · 物理学 2018-12-05 Raphaël Menu , Tommaso Roscilde

We analyze fermions after an interaction quantum quench in one spatial dimension and study the growth of the steady state entanglement entropy density under either a spatial mode or particle bipartition. For integrable lattice models, we…

统计力学 · 物理学 2021-11-15 Adrian Del Maestro , Hatem Barghathi , Bernd Rosenow

In this work we investigate the equilibration dynamics after a sudden Hamiltonian quench of a quantum spin system initially prepared in a thermal state. To characterize the equilibration we evaluate the Loschmidt echo, a global measure for…

量子物理 · 物理学 2011-09-13 N. Tobias Jacobson , Lorenzo Campos Venuti , Paolo Zanardi

We present an exact and fully analytical treatment of the entanglement dynamics for an isolated system of $N$ coupled oscillators following a sudden quench of the system parameters. The system is analyzed using the solutions of the time…

量子物理 · 物理学 2018-02-28 Supriyo Ghosh , Kumar S. Gupta , Shashi C. L. Srivastava
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