518 citations · 3.1k across the 58 of their papers we have counts for
44 papers · 1 filter
Phase Crossover induced by Dynamical Many Body Localization in Periodically Driven Long-Range Spin Systems
Mahbub Rahaman, Takashi Mori, Analabha Roy
Dynamical many-body freezing occurs in periodic transverse field-driven integrable quantum spin systems. Under freezing conditions, quantum dynamics causes practically infinite hys…
Symmetrized Liouvillian Gap in Markovian Open Quantum Systems
Takashi Mori, Tatsuhiko Shirai
Markovian open quantum systems display complicated relaxation dynamics. The spectral gap of the Liouvillian characterizes the asymptotic decay rate towards the steady state, but it…
Quantum and classical Floquet prethermalization
Wen Wei Ho, Takashi Mori, Dmitry A. Abanin +1
Time-periodic (Floquet) driving is a powerful way to control the dynamics of complex systems, which can be used to induce a plethora of new physical phenomena. However, when applie…
Floquet States in Open Quantum Systems
Takashi Mori
In Floquet engineering, periodic driving is used to realize novel phases of matter which are inaccessible in thermal equilibrium. For this purpose, the Floquet theory provides us a…
Heating Rates under Fast Periodic Driving beyond Linear Response
Takashi Mori
Heating under periodic driving is a generic nonequilibrium phenomenon, and it is a challenging problem in nonequilibrium statistical physics to derive a quantitatively accurate hea…
Metastability associated with many-body explosion of eigenmode expansion coefficients
Takashi Mori
Metastable states in stochastic systems are often characterized by the presence of small eigenvalues in the generator of the stochastic dynamics. We here show that metastability in…
Rigorous Bounds on the Heating Rate in Thue-Morse Quasiperiodically and Randomly Driven Quantum Many-Body Systems
Takashi Mori, Hongzheng Zhao, Florian Mintert +2
The nonequilibrium quantum dynamics of closed many-body systems is a rich yet challenging field. While recent progress for periodically driven (Floquet) systems has yielded a numbe…
Tensor-network approach to thermalization in open quantum many-body systems
Hayate Nakano, Tatsuhiko Shirai, Takashi Mori
We investigate the relaxation dynamics of open non-integrable quantum many-body systems in the thermodynamic limit by using a tensor-network formalism. We simulate the Lindblad qua…
Resolving Discrepancy between Liouvillian Gap and Relaxation Time in Boundary-Dissipated Quantum Many-Body Systems
Takashi Mori, Tatsuhiko Shirai
The gap of the Liouvillian spectrum gives the asymptotic decay rate of a quantum dissipative system, and therefore its inverse has been identified as the slowest relaxation time. I…
Prethermalization in the transverse-field Ising chain with long-range interactions
Takashi Mori
Nonequilibrium dynamics of an isolated quantum spin chain with long-range Ising interactions that decay as () with the distance is studied. It turns out that lon…
Strong Eigenstate Thermalization within a Generalized Shell in Noninteracting Integrable Systems
Takashi Ishii, Takashi Mori
Integrable systems do not obey the strong eigenstate thermalization hypothesis (ETH), which has been proposed as a mechanism of thermalization in isolated quantum systems. It has b…
Floquet prethermalization in periodically driven classical spin systems
Takashi Mori
It is proved that the energy absorption in a periodically driven classical spin system is exponentially slow in frequency, which results in a two-step relaxation called the Floquet…
Floquet-Gibbs state in open quantum systems
Tatsuhiko Shirai, Takashi Mori, Seiji Miyashita
We study long-time asymptotic states of periodically driven quantum systems coupled to a thermal bath. In order to describe a class of such a system, we introduce the Floquet-Gibbs…
Thermalization and prethermalization in isolated quantum systems: a theoretical overview
Takashi Mori, Tatsuhiko N. Ikeda, Eriko Kaminishi +1
The approach to thermal equilibrium, or thermalization, in isolated quantum systems is among the most fundamental problems in statistical physics. Recent theoretical studies have r…
Heating in integrable time-periodic systems
Takashi Ishii, Tomotaka Kuwahara, Takashi Mori +1
We investigate a heating phenomenon in periodically driven integrable systems that can be mapped to free-fermion models. We find that heating to the high-temperature state, which i…
Reply to "Comment on "Systematic Construction of Counterexamples to the Eigenstate Thermalization Hypothesis"" by Mondaini et.al
Naoto Shiraishi, Takashi Mori
This paper is a Reply paper to the Comment paper by Mondaini et.al. [arXiv:1711.06279]. We first distinguish the diagonal and the off-diagonal eigenstate thermalization hypothesis…
Entanglement prethermalization in the Tomonaga-Luttinger model
Eriko Kaminishi, Takashi Mori, Tatsuhiko N Ikeda +1
Prethermalization refers to the relaxation to a quasi-stationary state before reaching thermal equilibrium. Recently, it is found that not only local conserved quantities but also…
Thermalization without eigenstate thermalization hypothesis after a quantum quench
Takashi Mori, Naoto Shiraishi
Nonequilibrium dynamics of a nonintegrable system without the eigenstate thermalization hypothesis is studied. It is shown that, in the thermodynamic limit, this model thermalizes…
Systematic Construction of Counterexamples to the Eigenstate Thermalization Hypothesis
Naoto Shiraishi, Takashi Mori
We propose a general method to embed target states into the middle of the energy spectrum of a many-body Hamiltonian as its energy eigenstates. Employing this method, we construct…
Entanglement Pre-thermalization in an Interaction Quench between Two Harmonic Oscillators
Tatsuhiko N. Ikeda, Takashi Mori, Eriko Kaminishi +1
Entanglement pre-thermalization (EP) is a quasi-stationary nonequilibrium state of a composite system in which each individual subsystem looks thermal but the entire system remains…
Weak eigenstate thermalization with large deviation bound
Takashi Mori
We investigate the eigenstate thermalization hypothesis (ETH) for a translationally invariant quantum spin system on the -dimensional cubic lattice under the periodic boundary c…
Classical ergodicity and quantum eigenstate thermalization: Analysis in fully connected Ising ferromagnets
Takashi Mori
We investigate the relation between the classical ergodicity and the quantum eigenstate thermalization in the fully connected Ising ferromagnets. In the case of spin-1/2, an expect…
Extensive increase of entropy in quantum quench
Takashi Mori
In the setup of isolated quantum systems, it is proved that the thermodynamic entropy and the diagonal entropy must increase extensively in any nontrivial quantum quench. The exten…
Macrostate equivalence of two general ensembles and specific relative entropies
Takashi Mori
The two criteria of ensemble equivalence, i.e. the macrostate equivalence and the measure equivalence, are investigated for a general pair of states. The macrostate equivalence imp…