Zobrazeno 1 - 10
of 69
pro vyhledávání: '"Armando Relaño"'
Publikováno v:
Physical Review Research, Vol 6, Iss 4, p 043080 (2024)
In recent years, various notions of dynamical phase transitions have emerged to describe far-from-equilibrium criticality. A unifying framework connecting these different concepts is still missing, and would provide significant progress toward unders
Externí odkaz:
https://doaj.org/article/d00c6d27d6784a06a7d4da6ebb2929b3
Publikováno v:
SciPost Physics, Vol 10, Iss 5, p 107 (2021)
Disordered interacting spin chains that undergo a many-body localization transition are characterized by two limiting behaviors where the dynamics are chaotic and integrable. However, the transition region between them is not fully understood yet. We
Externí odkaz:
https://doaj.org/article/054ea1ae715444e28216b768bed443f2
Publikováno v:
SciPost Physics Proceedings, Iss 3, p 024 (2020)
The out-of-equilibrium dynamics of quantum systems is one of the most fascinating problems in physics, with outstanding open questions on issues such as relaxation to equilibrium. An area of particular interest concerns few-body systems, where quantu
Externí odkaz:
https://doaj.org/article/708a31b41eb04c82a22bf588d6d73c98
Autor:
Ángel L. Corps, Armando Relaño
Comment; 5 pages, 3 figures.
In the work of Das and Sharma [Phys. Rev. A 105, 033716 (2022)] the phase transitions of the Dicke model are studied. Its main result is that, besides the well-known quantum phase transition, excited-state quantum ph
In the work of Das and Sharma [Phys. Rev. A 105, 033716 (2022)] the phase transitions of the Dicke model are studied. Its main result is that, besides the well-known quantum phase transition, excited-state quantum ph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::395e1bac860801e6919c7b478f2e9114
http://arxiv.org/abs/2209.14660
http://arxiv.org/abs/2209.14660
Autor:
Ángel L. Corps, Armando Relaño
23 pags., 13 figs., 1 tab.
We study dynamical phase transitions (DPTs) in quantum many-body systems with infinite-range interaction, and present a theory connecting the two kinds of known DPTs (sometimes referred to as DPTs-I and DPTs-II) with t
We study dynamical phase transitions (DPTs) in quantum many-body systems with infinite-range interaction, and present a theory connecting the two kinds of known DPTs (sometimes referred to as DPTs-I and DPTs-II) with t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b237e6c2d13d7d0ad75a4d661c0c71ca
https://eprints.ucm.es/id/eprint/76583/
https://eprints.ucm.es/id/eprint/76583/
Autor:
Álvaro Rubio-García, Ángel L. Corps, Armando Relaño, Rafael A. Molina, Francisco Pérez-Bernal, José Enrique García-Ramos, Jorge Dukelsky
Publikováno v:
Arias Montano. Repositorio Institucional de la Universidad de Huelva
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We study a model of a quantum collective spin weakly coupled to a spin-polarized Markovian environment and find that the spectrum is divided into two regions that we name normal and exceptional Liouvillian spectral phases. In the thermodynamic limit,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1155507af9d2c902ff97c7a5d66ed84e
https://doi.org/10.1103/physreva.106.l010201
https://doi.org/10.1103/physreva.106.l010201
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
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E-Prints Complutense. Archivo Institucional de la UCM
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E-Prints Complutense. Archivo Institucional de la UCM
20 pags., 5 figs.
The critical behavior in an important class of excited state quantum phase transitions is signaled by the presence of a new constant of motion only at one side of the critical energy. We study the impact of this phenomenon in t
The critical behavior in an important class of excited state quantum phase transitions is signaled by the presence of a new constant of motion only at one side of the critical energy. We study the impact of this phenomenon in t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3358419259806fbd4a6780dacab44f36
http://arxiv.org/abs/2112.01923
http://arxiv.org/abs/2112.01923
Autor:
Armando Relaño, Ángel L. Corps
Publikováno v:
E-Prints Complutense: Archivo Institucional de la UCM
Universidad Complutense de Madrid
E-Prints Complutense. Archivo Institucional de la UCM
instname
Universidad Complutense de Madrid
E-Prints Complutense. Archivo Institucional de la UCM
instname
We study the spectral statistics of quantum systems with finite Hilbert spaces. We derive a theorem showing that eigenlevels in such systems cannot be globally uncorrelated, even in the case of fully integrable dynamics, as a consequence of the unfol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b835ca76a695e719cd44825112db9eb
https://eprints.ucm.es/id/eprint/66737/
https://eprints.ucm.es/id/eprint/66737/
Autor:
Armando Relaño, Ángel L. Corps
Publikováno v:
E-Prints Complutense. Archivo Institucional de la UCM
instname
instname
We propose that a broad class of excited-state quantum phase transitions (ESQPTs) gives rise to two different excited-state quantum phases. These phases are identified by means of an operator, $\hat{\mathcal{C}}$, which is a constant of motion only i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4d72ea700aff30ddc475fc097fb81df9
Publikováno v:
E-Prints Complutense: Archivo Institucional de la UCM
Universidad Complutense de Madrid
E-Prints Complutense. Archivo Institucional de la UCM
instname
Digital.CSIC. Repositorio Institucional del CSIC
Universidad Complutense de Madrid
E-Prints Complutense. Archivo Institucional de la UCM
instname
Digital.CSIC. Repositorio Institucional del CSIC
14 pags., 9 figs.
We study the ergodic side of the many-body localization transition in its standard model, the disordered Heisenberg quantum spin chain. We show that the Thouless energy, extracted from long-range spectral statistics and the pow
We study the ergodic side of the many-body localization transition in its standard model, the disordered Heisenberg quantum spin chain. We show that the Thouless energy, extracted from long-range spectral statistics and the pow
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::940d1fe6bf23a0d2d8c107a3dcef6127
http://hdl.handle.net/10261/226508
http://hdl.handle.net/10261/226508