Zobrazeno 1 - 10
of 2 334
pro vyhledávání: '"Sengupta, K"'
We study the dynamics of entanglement asymmetry in periodically driven quantum systems. Using a periodically driven XY chain as a model for a driven integrable quantum system, we provide semi-analytic results for the behavior of the dynamics of the e
Externí odkaz:
http://arxiv.org/abs/2412.03654
We demonstrate that the kinematically-constrained model of Rydberg atoms on a two-leg ladder with staggered detuning, $\Delta \in [0,1]$, has quantum many-body scars (QMBS) in its spectrum and represents a non-perturbative generalization of the parad
Externí odkaz:
http://arxiv.org/abs/2411.02500
We study a set of many-body wave-functions of Fermions that are naturally written using momentum space basis and allow for quantum superposition of Fermion occupancy, $\{n_{\bf k}\}$. This {enables} us to capture the fluctuations of the Fermi-surface
Externí odkaz:
http://arxiv.org/abs/2408.00834
Autor:
Banerjee, Tista, Sengupta, K.
Periodically driven closed quantum systems are expected to eventually heat up to infinite temperature reaching a steady state described by a circular orthogonal ensemble (COE). However, such finite driven systems may exhibit sufficiently long prether
Externí odkaz:
http://arxiv.org/abs/2407.20764
We demonstrate the existence of exact Floquet flat bands implying strong violation of the eigenstate thermalization hypothesis in a large class of closed quantum many-body systems in the presence of a two-rate drive characterized by frequencies $\Ome
Externí odkaz:
http://arxiv.org/abs/2404.06536
Publikováno v:
Phys. Rev. B 109, 214304 (2024)
We study the possible signatures of prethermal strong Hilbert space fragmentation (HSF) for one-dimensional (1D) fermions subjected to a periodic drive. We extend the results of Phys. Rev. Lett. 130, 120401 (2023) to show the possibility of such frag
Externí odkaz:
http://arxiv.org/abs/2404.04328
We show, via explicit computation on a constrained bosonic model, that the presence of subsystem symmetries can lead to a quantum phase transition (QPT) where the critical point exhibits an emergent enhanced symmetry. Such a transition separates a un
Externí odkaz:
http://arxiv.org/abs/2311.12107
Publikováno v:
Physical Review A 110, 042207 (2024)
In an atom-photon interacting system described by Tavis Cummings Hubbard (TCH) model, we demonstrate the emergence of a quasi-steady state in a dissipative environment that exhibits intriguing ergodic behavior. The TCH model undergoes a dissipative t
Externí odkaz:
http://arxiv.org/abs/2310.12779
Autor:
Banerjee, Tista, Sengupta, K.
Publikováno v:
Phys. Rev. B 109, 094306 (2024)
We study entanglement transitions in a periodically driven Ising chain in the presence of an imaginary transverse field $\gamma$ as a function of drive frequency $\omega_D$. In the high drive amplitude and frequency regime, we find a critical value $
Externí odkaz:
http://arxiv.org/abs/2309.07661
Publikováno v:
Phys. Rev. B 109, 045145 (2024)
We show that constraints imposed by strong Hilbert space fragmentation (HSF) along with the presence of certain global symmetries can ensure the reality of eigenspectra of non-Hermitian quantum systems; such a reality cannot be guaranteed by global s
Externí odkaz:
http://arxiv.org/abs/2307.05679