Digitale Medien
Springer
The European physical journal
91 (1993), S. 501-505
ISSN:
1434-6036
Schlagwort(e):
05.30.Jp
;
74.65.+n
;
74.70.Jm
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Physik
Notizen:
Abstract For temperature zero the effects of disorder for interacting bosons are considered. The disorder induced superfluid-insulator transition in thed-dimensional disordered Bogoliubov model is discussed. Results for a short-range and a long-range random potential are given. For short-range disorder we argue that ford〈4 arbitrarily small disorder localizes the Bose condensate for vanishing interaction potential. Ford〉4 a certain strength of the disorder potential is necessary in order to localize the condensate. For the three-dimensional Bogoliubov model our results are in agreement with a recent calculation. We compare our theoretical predictions with numerical experiments for a disordered boson Hubbard model.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF01316830
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