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The European Physical Journal D

, Volume 47, Issue 2, pp 203–208 | Cite as

Lattice bosons in quartic confinement

  • R. RamakumarEmail author
  • A. N. Das
Laser Cooling and Quantum Gas

Abstract.

We present a theoretical study of bose condensation of non-interacting bosons in finite lattices in quartic potentials in one, two, and three dimensions. We investigate dimensionality effects and quartic potential effects on single boson density of energy states, condensation temperature, condensate fraction, and specific heat. The results obtained are compared with corresponding results for lattice bosons in harmonic traps.

PACS.

03.75.Lm Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations 03.75.Nt Other Bose-Einstein condensation phenomena 03.75.Hh Static properties of condensates; thermodynamical, statistical, and structural properties 

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Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2008

Authors and Affiliations

  1. 1.Department of Physics and AstrophysicsUniversity of DelhiDelhiIndia
  2. 2.Theoretical Condensed Matter Physics DivisionSaha Institute of Nuclear PhysicsKolkataIndia

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