• Opis pozycji
• Metadane (Dublin Core)
• Dane dla PBN

Opis pozycji



tytuł:	Many-body localization of bosons in optical lattices
autor:	Sierant Piotr , Zakrzewski Jakub
tytuł czasopisma:	New Journal of Physics
tom:	20
numer:	4
data wydania:	2018
article ID:	043032
eISSN:	1367-2630
DOI:	10.1088/1367-2630/aabb17
język:	angielski
język czasopisma:	angielski
abstrakt w j. angielskim:	Many-body localization for a system of bosons trapped in a one-dimensional lattice is discussed. Two models that may be realized for cold atoms in optical lattices are considered. The model with a random on-site potential is compared with previously introduced random interactions model. While the origin and character of the disorder in both systems is different they show interesting similar properties. In particular, many-body localization appears for a sufficiently large disorder as verified by a time evolution of initial density wave states as well as using statistical properties of energy levels for small system sizes. Starting with different initial states, we observe that the localization properties are energy-dependent which reveals an inverted many-body localization edge in both systems (that finding is also verified by statistical analysis of energy spectrum). Moreover, we consider computationally challenging regime of transition between many body localized and extended phases where we observe a characteristic algebraic decay of density correlations which may be attributed to subdiffusion (and Griffiths-like regions) in the studied systems. Ergodicity breaking in the disordered Bose–Hubbard models is compared with the slowing-down of the time evolution of the clean system at large interactions.
wydział:instytut/zakład/katedra:	Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego
typ:	artykuł w czasopiśmie
podtyp:	artykuł

Pliki tej pozycji

Pozycja umieszczona jest w następujących kolekcjach

• Publikacje naukowe