Cold gases with anisotropic interactions

被引：4

作者：

Pikovski, Alexander ^{[1
]}

机构：

[1] Univ Hamburg, Zentrum Opt Quantentechnol, D-22761 Hamburg, Germany

来源：

PHYSICAL REVIEW A | 2014年 / 89卷 / 03期

关键词：

FIELD;

D O I：

10.1103/PhysRevA.89.033623

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A cold gas of particles with anisotropic interactions of a general form, due to a polarizing field, is studied. Special cases are atoms or molecules with dipole-dipole or quadrupole-quadrupole interactions. It is shown that the angular dependence of an observable on the direction of the polarizing field is largely determined by symmetry. For a gas in a confined quasi-two-dimensional geometry, the effective interaction is calculated in a general form. Some examples of dipole and quadrupole gases are considered. It is concluded that when anisotropic forces are studied in a general manner, one can obtain simpler results and better understanding for some problems.

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页数：5

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