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Tamm's surface states and Bose-Einstein condensation (1605.04354v1)
Published 13 May 2016 in cond-mat.quant-gas
Abstract: We calculate and discuss the effects on the thermodynamic properties of a 3D Bose gas caused by a gap $\Delta$ in the energy of the particles constituting the gas that without the gap behaves like an ideal Bose gas. Explicit formulae with arbitrary $\Delta$ values are discussed for: the critical temperature which increases as the gap grows; the condensate fraction; the internal energy; and the constant-volume specific heat found to possess a jump-discontinuity for any $\Delta$ different from zero. Three dimensional infinite ideal Bose gas results are recovered when we the energy gap goes to zero.
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