Classification of a supersolid: Symmetry breaking and Excitation spectra

Details Classification of a supersolid: Symmetry breaking and Excitation spectra Classification of a supersolid: Symmetry breaking and Excitation spectra

2007-01-28

arxiv.org/abs/cond-mat/0701694v4

Physics

Condensed Matter

Materials Science

15 pages, 3 figures, Contribution to the supersolid JLTP special issue SS2012

Scientific paper

A state of matter is characterized by its symmetry breaking and elementary excitations. A supersolid is a state which breaks both translational symmetry and internal $ U(1) $ symmetry. Here, we review some recent works and also provide additional new insights in studying symmetry breaking and the excitation spectra of various kinds supersliods in both continuous systems and on lattices, both condensed matter and cold atom systems. Our approaches are from both phenomenological Ginsburg-Landau theory and microscopic numerical calculations, We also contrast different kinds of supersolids in term of its order parameters, symmetry breaking patterns, excitation spectra and detection methods.

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