Effects of Zero Mode and Thin Spectrum on the Life Time of Atomic Bose Einstein Condensates

Details Effects of Zero Mode and Thin Spectrum on the Life Time of Atomic Bose Einstein Condensates Effects of Zero Mode and Thin Spectrum on the Life Time of Atomic Bose Einstein Condensates

2008-03-16

arxiv.org/abs/0803.2339v1

Physics

Condensed Matter

Other Condensed Matter

8 pages, 9 figures, Proceeding of 14th Central European Workshop on Quantum Optics To be published in European Physical Journa

Scientific paper

10.1140/epjst/e2008-00705-0

Reviewing the ideas developed in, the ground state life time of a finite size atomic Bose Einstein condensate is studied for coherent, squeezed coherent and thermal coherent ground states. Ground state evolution of coherent and squeezed coherent states in a double well potential is studied. Effects of thin spectrum on Bose-Einstein condensates is discussed and quasiparticle excitation lifetimes are calculated. It is shown that the effect of the states we use on the free energy vanishes in the thermodynamic limit. Possible extension to a double well potential and effect of a second broken symmetry is also discussed.

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