Twofold correlation spreading in a strongly correlated lattice Bose gas.
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
11 Mar 2019
11 Mar 2019
Historique:
received:
17
12
2018
accepted:
21
02
2019
entrez:
13
3
2019
pubmed:
13
3
2019
medline:
13
3
2019
Statut:
epublish
Résumé
We study the spreading of correlations in the Bose-Hubbard chain, using the time-dependent matrix-product state approach. In both the superfluid and the Mott-insulator phases, we find that the time-dependent correlation functions generally display a universal twofold cone structure characterized by two distinct velocities. The latter are related to different microscopic properties of the system and provide useful information on the excitation spectrum. The twofold spreading of correlations has profound implications on experimental observations that are discussed.
Identifiants
pubmed: 30858426
doi: 10.1038/s41598-019-40679-3
pii: 10.1038/s41598-019-40679-3
pmc: PMC6411744
doi:
Types de publication
Journal Article
Langues
eng
Pagination
4135Subventions
Organisme : European Commission (EC)
ID : 641122
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