The variation law of exchange dipolar term Bose gas
Source abstract
Abstract
We present our numerical results of the total dipolar exchange term created by the non-condensate density and the anomalous density of trapped Bose gas. We use both the Hartree-Fock-Bogoliubov Popov (HFB-P) and the Generalized Hartree-Fock-Bogoliubov (GHFB) approximations which include the anomalous thermal average. We derive a set Bogoliubov-de-Gennes coupled equations (BdG) governing the gas static comportment at finite temperature. We calculate the condensate fraction and the radius of the condensate density in Thomas-Fermi limit. We analyze in particular the behavior of the exchange dipolar term; we estimate its variation law via the condensate fraction (frac{Nc}{N}) and the reduced temperature (frac{T}{Tc}) which appears as an additional effective potential.
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Research context
OpenAlex topics: Cold Atom Physics and Bose-Einstein Condensates · Quantum, superfluid, helium dynamics · Atomic and Subatomic Physics Research
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