Friday, June 21, 2013

1306.4839 (Levent Akant et al.)

Bose-Einstein Condensation on a Manifold with Nonnegative Ricci

Levent Akant, Emine Ertugrul, Ferzan Tapramaz, O. Teoman Turgut
The Bose-Einstein condensation for an ideal Bose gas and for a dilute weakly interacting Bose gas in a manifold with nonnegative Ricci curvature is investigated using the heat kernel and eigenvalue estimates of the Laplace operator. The main focus is on the nonrelativistic gas. However, special relativistic ideal gas is also discussed. The thermodynamic limit of the heat kernel and eigenvalue estimates is taken and the results are used to derive bounds for the depletion coefficient. In the case of a weakly interacting gas Bogoliubov approximation is employed. The ground state is analyzed using heat kernel methods. The justification of the c-number substitution on a manifold is given.
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