Heat capacity of trapped bosons in a combined harmonic-lattice potential

Azza M. El-BADRY

Makale detayları

Heat capacity of trapped bosons in a combined harmonic-lattice potential

Yazarlar:

Azza M. El-BADRY

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Physics 2012 Vol.36 Issue 3, pp.361-367

Belge Tipi:

Makale

Yayın Tarihi:

2/2012

Belge Dili:

Türkçe

Document ID (Org No.):

2000760342

Sıklık:

İki Aylık

eISSN:

1303-6122

pISSN:

1300-0101

Anahtar kelimeler:

Thermodynamical properties for BEC in optical lattice; semiclassical theories and applications

Özet:

 

In this paper, the heat capacity per particle C(T)/NkB of  the trapped bosons in a combined harmonic-lattice potential is  calculated within the semicalssical approximation.  The main effects  which can alter the ideal gas are included simultaneously in the  present approach.  The calculated results show that the heat capacity  has a significant dependence on the lattice depth and temperature.  Classical results are recovered at sufficiently high temperature, and  that it reproduces the Dulong-Petit law type.  Moreover, the behavior  of the heat capacity in a deep lattice can be used as an indicator for  the quantum phase transition superfluid-Mott insulator.  It decreases  as the system gets closer to the Mott transition.  The calculated  results provide a solid theoretical foundation of the current  experiments.

 

In this paper, the heat capacity per particle C(T)/NkB of  the trapped bosons in a combined harmonic-lattice potential is  calculated within the semicalssical approximation.  The main effects  which can alter the ideal gas are included simultaneously in the  present approach.  The calculated results show that the heat capacity  has a significant dependence on the lattice depth and temperature.  Classical results are recovered at sufficiently high temperature, and  that it reproduces the Dulong-Petit law type.  Moreover, the behavior  of the heat capacity in a deep lattice can be used as an indicator for  the quantum phase transition superfluid-Mott insulator.  It decreases  as the system gets closer to the Mott transition.  The calculated  results provide a solid theoretical foundation of the current  experiments.

Makale detayları

Heat capacity of trapped bosons in a combined harmonic-lattice potential

Yazarlar: Azza M. El-BADRY

Yayıncı: TUBITAK

Dergi: Turkish Journal of Physics 2012 Vol.36 Issue 3, pp.361-367

Belge Tipi: Makale

Yayın Tarihi: 2/2012

Belge Dili: Türkçe

Document ID (Org No.): 2000760342

Sıklık: İki Aylık

eISSN: 1303-6122

pISSN: 1300-0101

Thermodynamical properties for BEC in optical lattice; semiclassical theories and applications

Sayı

Yazarlar:

Azza M. El-BADRY

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Physics 2012 Vol.36 Issue 3, pp.361-367

Belge Tipi:

Makale

Yayın Tarihi:

2/2012

Belge Dili:

Türkçe

Document ID (Org No.):

2000760342

Sıklık:

İki Aylık

eISSN:

1303-6122

pISSN:

1300-0101