Bulletin of the American Physical Society
APS March Meeting 2018
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session E26: Bose-Einstein Condensates and Nonlinear Waves
8:00 AM–11:00 AM,
Tuesday, March 6, 2018
LACC Room: 404A
Sponsoring Unit: DAMOP
Chair: Mark Edwards, Georgia Southern University
Abstract: E26.00015 : Bose-Einstein condensation of a non-ideal Bose gas of atoms with large spin
10:48 AM–11:00 AM
A non-ideal diluted quantum Bose gas of atoms with spin-spin interaction of dipole type is described in the spin coherent states representation. Large values of spin can be treated quasi-classically up to exponentially small corrections, that allows to derive effective interaction between particles of the gas. A preferable ground state configuration of the system is determined by this effective interaction, the spin-spin coupling constant regulates whether the system takes ferromagnetic or antiferromagnetic ground state. The coupling constants of long-ranged spin-spin interaction and short-ranged scattering also define a condition when the system collapses, causing formation of molecules.
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