TY - JOUR
AB - We investigate the low-energy excitation spectrum of a Bose gas confined in a trap, with weak long-range repulsive interactions. In particular, we prove that the spectrum can be described in terms of the eigenvalues of an effective one-particle operator, as predicted by the Bogoliubov approximation.
AU - Grech, Philip
AU - Robert Seiringer
ID - 2408
IS - 2
JF - Communications in Mathematical Physics
TI - The excitation spectrum for weakly interacting Bosons in a trap
VL - 322
ER -