Superfluid behavior of a Bose-Einstein condensate in a random potential

Autor(en)

Martin Könenberg, Thomas Moser, Robert Seiringer, Jakob Yngvason

Abstrakt

We investigate the relation between Bose–Einstein condensation (BEC) and superfluidity in the ground state of a one-dimensional model of interacting bosons in a strong random potential. We prove rigorously that in a certain parameter regime the superfluid fraction can be arbitrarily small while complete BEC prevails. In another regime there is both complete BEC and complete superfluidity, despite the strong disorder.

Organisation(en)

Computergestützte Physik und Physik der Weichen Materie, Mathematische Physik

Externe Organisation(en)

Memorial University of Newfoundland, IST Austria - Institute of Science and Technology

Journal

New Journal of Physics

Band

17

Anzahl der Seiten

10

ISSN

1367-2630

DOI

https://doi.org/10.1088/1367-2630/17/1/013022

Publikationsdatum

01-2015

Peer-reviewed

Ja

ÖFOS 2012

103019 Mathematische Physik

Schlagwörter

ASJC Scopus Sachgebiete

Allgemeine Physik und Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/3fc5a428-a1e7-4fe4-b63c-9512e1e822d7