Stability of Fermi Surfaces and K-Theory

Details Stability of Fermi Surfaces and K-Theory Stability of Fermi Surfaces and K-Theory

2005-03-01

arxiv.org/abs/hep-th/0503006v1

Phys.Rev.Lett.95:016405,2005

Physics

High Energy Physics

High Energy Physics - Theory

4 pages, revtex

Scientific paper

10.1103/PhysRevLett.95.016405

Nonrelativistic Fermi liquids in d+1 dimensions exhibit generalized Fermi surfaces: (d-p)-dimensional submanifolds in the momentum-frequency space supporting gapless excitations. We show that the universality classes of stable Fermi surfaces are classified by K-theory, with the pattern of stability determined by Bott periodicity. The Atiyah-Bott-Shapiro construction implies that the low-energy modes near a Fermi surface exhibit relativistic invariance in the transverse p+1 dimensions. This suggests an intriguing parallel between norelativistic Fermi liquids and D-branes of string theory.

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