Zobrazeno 1 - 10
of 119
pro vyhledávání: '"Henrik Johannesson"'
Publikováno v:
Physical Review Research, Vol 3, Iss 4, p 043048 (2021)
Recent works have proved the existence of symmetry-protected edge states in certain one-dimensional topological band insulators and superconductors at the gap-closing points which define quantum phase transitions between two topologically nontrivial
Externí odkaz:
https://doaj.org/article/7dd931c57955447eaad41df7957ab6fd
Publikováno v:
Physical Review Research, Vol 2, Iss 3, p 033246 (2020)
A central tenet in the theory of quantum phase transitions (QPTs) is that a nonanalyticity in a ground-state energy implies a QPT. Here we report on a finding that challenges this assertion. As a case study we take a phase diagram of a one-dimensiona
Externí odkaz:
https://doaj.org/article/bc725af91e044ce898c37bdc6e3f4f95
We study a generic class of fermionic two-band models under synchronized periodic driving, i.e., with the different terms in a Hamiltonian subject to periodic drives with the same frequency and phase. With all modes initially in a maximally mixed sta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::86e5e273188bd66d9868b99b0acb694c
http://arxiv.org/abs/2111.09926
http://arxiv.org/abs/2111.09926
We study the time evolution of spin squeezing in the one-dimensional spin-1/2 XY model subject to a sudden quantum quench of a transverse magnetic field. The initial state is selected from the ground state phase diagram of the model, consisting of fe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6991fae4ad5e6a0162e861a0681c40ff
http://arxiv.org/abs/2108.13805
http://arxiv.org/abs/2108.13805
A class of Aubry-Andr\'e-Harper models of spin-orbit coupled electrons exhibits a topological phase diagram where two regions belonging to the same phase are split up by a multicritical point. The critical lines which meet at this point each defines
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c685930b68e16997899a0e70df22108
http://arxiv.org/abs/2008.08158
http://arxiv.org/abs/2008.08158
Autor:
Tony J. G. Apollaro, Gabriele De Chiara, Henrik Johannesson, Pasquale Sodano, Sougato Bose, Simone Paganelli, Abolfazl Bayat
Publikováno v:
Bayat, A, De Chiara, G, Apollaro, T J G, Paganelli, S, Johannesson, H, Sodano, P & Bose, S 2020, Quantum thermodynamics at impurity quantum phase transitions . in Springer Proceedings in Physics . Springer Proceedings in Physics, vol. 239, Springer, pp. 361-373 . https://doi.org/10.1007/978-3-030-35473-2_17
Springer Proceedings in Physics ISBN: 9783030354725
Springer Proceedings in Physics ISBN: 9783030354725
The study of quantum thermodynamics, i.e. equilibrium and non-equilibrium thermodynamics of quantum systems, has been applied to various many-body problems, including quantum phase transitions. An important question is whether out-of-equilibrium quan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cfc81c71e299979ed6cbf18faad096de
https://pure.qub.ac.uk/en/publications/55027955-09a1-4fad-96f5-8e565d918a87
https://pure.qub.ac.uk/en/publications/55027955-09a1-4fad-96f5-8e565d918a87
Publikováno v:
Springer Proceedings in Physics ISBN: 9783030354725
Quantum entanglement is nearly ubiquitous in equilibrium and non-equilibrium many-body states. Although it has been largely studied through the von Neumann entropy of a subsystem, which quantifies the entanglement between two complementary parts of a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9960209dadffc0fb0474bcc552c044a3
https://doi.org/10.1007/978-3-030-35473-2_3
https://doi.org/10.1007/978-3-030-35473-2_3
A central tenet in the theory of quantum phase transitions (QPTs) is that a nonanalyticity in the ground-state energy in the thermodynamic limit implies a QPT. Here we report on a finding that challenges this assertion. As a case study we take a phas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5dd6153de104c267cc7cca7af72ac1f7
This book covers recent developments in the understanding, quantification, and exploitation of entanglement in spin chain models from both condensed matter and quantum information perspectives. Spin chain models are at the foundation of condensed mat
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
In most lattice models, the closing of a band gap typically occurs at high-symmetry points in the Brillouin zone. Differently, in the Creutz model $-$ describing a system of spinless fermions hopping on a two-leg ladder pierced by a magnetic field $-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a4d442f6810274a75ebb3b23bbd2bab3