Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2008-04-16
Phys. Rev. B 78, 054508 (2008)
Physics
Condensed Matter
Statistical Mechanics
Scientific paper
10.1103/PhysRevB.78.054508
From the many-body T-matrix the condition for a medium-dependent bound state and its binding energy is derived for a homogeneous interacting Bose gas. This condition provides the critical line in the phase diagram in terms of the medium-dependent scattering length. Separating the Bose pole from the distribution function the influence of a Bose condensate is discussed and a thermal minimum of the critical scattering length is found.
Lipavsky Pavel
Männel Michael
Morawetz Klaus
Schreiber Michael
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