Journal of Physics A. Mathematical and General
Publication date:
2003-03-01
Volume:
36
Pages:
L169 -
L174
Publisher:
Iop publishing ltd
Author:
Lauwers, Joris
Verbeure, André ; Zagrebnov, VA
Keywords:
imperfect, Gap, Science & Technology, Physical Sciences, Physics, Multidisciplinary, Physics, Mathematical, Physics, Mathematical Physics
Abstract:
Using a specially tuned mean-field Bose gas as a reference system, we establish a positive lower bound on the condensate density for continuous Bose systems with superstable two-body interactions and a finite gap in the one-particle excitations spectrum, i.e. we prove for the first time standard homogeneous Bose-Einstein condensation for such interacting systems.