 99446 Luca Salasnich (INFM and Univ. Milano)
 BEC in Nonextensive Statistical Mechanics
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Nov 27, 99

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Abstract. We discuss the BoseEinstein condensation (BEC) for an ideal gas
of bosons in the framework of Tsallis's nonextensive
statistical mechanics.
We study the corrections to the standard BEC formulas
due to a weak nonextensivity of the system.
In particular, we consider three cases
in the Ddimensional space:
the homogeneous gas, the gas in a harmonic trap and
the relativistic homogenous gas.
The results show that small deviations from
the extensive Bose statistics produce remarkably large
changes in the BEC transition temperature.
(To be published in Mod. Phys. Lett. B)
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99446.tex