Zobrazeno 1 - 10
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pro vyhledávání: '"Roy, Sthitadhi"'
Autor:
Sherry, Alan, Roy, Sthitadhi
Scrambling unitary dynamics in a quantum system transmutes local quantum information into a non-local web of correlations which manifests itself in a complex spatio-temporal pattern of entanglement. In such a context, we show there can exist three di
Externí odkaz:
http://arxiv.org/abs/2410.24212
Autor:
Roy, Sthitadhi, Logan, David E.
This article reviews recent progress in understanding the physics of many-body localisation (MBL) in disordered and interacting quantum many-body systems, from the perspective of ergodicity breaking on the associated Fock space. This approach to MBL
Externí odkaz:
http://arxiv.org/abs/2408.12685
Autor:
Pain, Bikram, Roy, Sthitadhi
The many-body localised phase of quantum systems is an unusual dynamical phase wherein the system fails to thermalise and yet, entanglement grows unboundedly albeit very slowly in time. We present a microscopic theory of this ultraslow growth of enta
Externí odkaz:
http://arxiv.org/abs/2406.09392
Autor:
Roy, Sthitadhi
We present a scaling theory of the many-body localisation transition in terms of emergent, characteristic energyscales. The analysis is based on the decomposition of the eigenstates in the basis of trivially localised states, resolved in the energies
Externí odkaz:
http://arxiv.org/abs/2404.07975
Autor:
Roy, Sthitadhi
Publikováno v:
J. Phys.: Condens. Matter 35, 415601 (2023)
Many-body localised phases of disordered, interacting quantum systems allow for exotic localisation protected quantum order in eigenstates at arbitrarily high energy densities. In this work, we analyse the manifestation of such order on the Hilbert-s
Externí odkaz:
http://arxiv.org/abs/2307.06702
Publikováno v:
Phys. Rev. B 108, L140201 (2023)
The dynamics of interacting quantum many-body systems has two seemingly disparate but fundamental facets. The first is the dynamics of real-space local observables, and if and how they thermalise. The second is to interpret the dynamics of the many-b
Externí odkaz:
http://arxiv.org/abs/2305.06374
Publikováno v:
Phys. Rev. B 108, L060201 (2023)
The dynamics of non-Hermitian quantum systems have taken on an increasing relevance in light of quantum devices which are not perfectly isolated from their environment. The interest in them also stems from their fundamental differences from their Her
Externí odkaz:
http://arxiv.org/abs/2304.09892
Within the broad theme of understanding the dynamics of disordered quantum many-body systems, one of the simplest questions one can ask is: given an initial state, how does it evolve in time on the associated Fock-space graph, in terms of the distrib
Externí odkaz:
http://arxiv.org/abs/2212.14333
Autor:
Roy, Sthitadhi
Publikováno v:
Phys. Rev. B 106, L140204 (2022)
Eigenstates of many-body localised (MBL) systems are characterised by area-law bipartite entanglement along with multifractal statistics of their amplitudes on Hilbert space. At the same time, sparse random pure states with fractal statistics are not
Externí odkaz:
http://arxiv.org/abs/2208.08468
Publikováno v:
Phys. Rev. Lett. 129, 190601 (2022)
In a recent work [A. Deger et al., Phys. Rev. Lett. 129, 160601 (2022)] we have shown that kinetic constraints can completely arrest many-body chaos in the dynamics of a classical, deterministic, translationally-invariant spin system with the strengt
Externí odkaz:
http://arxiv.org/abs/2206.07724