Zobrazeno 1 - 10
of 26
pro vyhledávání: '"E. J. Torres-Herrera"'
We study the time dynamics of random density matrices generated by evolving the same pure state using a Gaussian orthogonal ensemble (GOE) of Hamiltonians. We show that the spectral statistics of the resulting mixed state is well described by random
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9183cfb15ba2036f97e0bbde09980f5f
https://doi.org/10.21203/rs.3.rs-927982/v1
https://doi.org/10.21203/rs.3.rs-927982/v1
Autor:
Miguel A. Bastarrachea-Magnani, Sergio Lerma-Hernández, E. J. Torres-Herrera, David Villaseñor, Jorge G. Hirsch, Lea F. Santos
Publikováno v:
Lerma-Hernandez, S, Villasenor, D, Bastarrachea-Magnani, M A, Torres-Herrera, E J, Santos, L F & Hirsch, J G 2019, ' Dynamical signatures of quantum chaos and relaxation time scales in a spin-boson system ', Physical Review E, vol. 100, no. 1, 012218 . https://doi.org/10.1103/PhysRevE.100.012218
Quantum systems whose classical counterparts are chaotic typically have highly correlated eigenvalues and level statistics that coincide with those from ensembles of full random matrices. A dynamical manifestation of these correlations comes in the f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fac0f82dd2636af35c1bc5ff571b8427
http://arxiv.org/abs/1905.03253
http://arxiv.org/abs/1905.03253
Publikováno v:
New Journal of Physics, Vol 16, Iss 6, p 063010 (2014)
We study numerically and analytically isolated interacting quantum systems that are taken out of equilibrium instantaneously (quenched). The probability of finding the initial state in time, the so-called fidelity, decays fastest for systems describe
Externí odkaz:
https://doaj.org/article/44ea8ab7ffb0481c8a08d564c641b6dd
Publikováno v:
New Journal of Physics, Vol 15, Iss 5, p 055014 (2013)
We study the problem of non-conventional Anderson localization emerging in bilayer periodic-on-average structures with alternating layers of materials, with positive and negative refraction indices n _a and n _b . Attention is paid to the model of th
Externí odkaz:
https://doaj.org/article/09fd94dd8c1a44ea809a20732825ccff
Autor:
E. J. Torres-Herrera, Lea F. Santos
Publikováno v:
Fundamental Theories of Physics ISBN: 9783319990453
We present an overview of our studies on the nonequilibrium dynamics of quantum systems that have many interacting particles. Our emphasis is on systems that show strong level repulsion, referred to as chaotic systems. We discuss how full random matr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e991c5d641002078547edb958184eab
https://doi.org/10.1007/978-3-319-99046-0_19
https://doi.org/10.1007/978-3-319-99046-0_19
Publikováno v:
Brazilian Journal of Physics. 46:239-247
In this work we provide an overview of our recent results about the quench dynamics of one-dimensional many-body quantum systems described by spin-1/2 models. To illustrate those general results, here we employ a particular and experimentally accessi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f130cc41fcb8d58c95b16f28d5029325
https://doi.org/10.1007/s13538-015-0366-3
https://doi.org/10.1007/s13538-015-0366-3
We study numerically and analytically the quench dynamics of isolated many-body quantum systems. Using full random matrices from the Gaussian orthogonal ensemble, we obtain analytical expressions for the evolution of the survival probability, density
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c89447e0047fddc2b00df2d4a571040
http://arxiv.org/abs/1704.06272
http://arxiv.org/abs/1704.06272
From the analysis of the relaxation process of isolated lattice many-body quantum systems quenched far from equilibrium, we deduce a criterion for predicting when they are certain to thermalize. It is based on the algebraic behavior $\propto t^{-\gam
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f9248adc837aa5fd240aa59857c84723
http://arxiv.org/abs/1610.04240
http://arxiv.org/abs/1610.04240
Autor:
Lea F. Santos, E. J. Torres-Herrera
This work supports the existence of extended nonergodic states in the intermediate region between the chaotic (thermal) and the many-body localized phases. These states are identified through an extensive analysis of static and dynamical properties o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f814832e29215b39ea1995f6a111f63a
http://arxiv.org/abs/1610.02035
http://arxiv.org/abs/1610.02035
Despite being ubiquitous, out-of-equilibrium quantum systems are much less understood than systems at equilibrium. Progress in the field has benefited from a symbiotic relationship between theoretical studies and new experiments on coherent dynamics.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::898ba51cf5f6eb8b6775ace1db3e1b12
http://arxiv.org/abs/1601.05807
http://arxiv.org/abs/1601.05807