Higgs Boson in Superconductors
Statistical Mechanics
2007-05-23 v1 Superconductivity
High Energy Physics - Phenomenology
Abstract
Superfluid helium, describable by a two-component order parameter, exhibits only the Bogolubov mode with energy at long wavelengths, while a Lorentz-invariant theory with a two-component order parameter exhibits a finite energy mode at long wavelengths (the Higgs Boson), besides the above mass-less mode. The mass-less mode moves to high energies if it couples to electromagnetic fields (the Anderson-Higgs mechanism). Superconductors, on the other hand have been theoretically and experimentally shown to exhibit both modes. This occurs because the excitations in superconductors have an (approximate) particle-hole symmetry and therefore show a similarity to Lorentz-invariant theories.
Cite
@article{arxiv.cond-mat/0109409,
title = {Higgs Boson in Superconductors},
author = {C. M. Varma},
journal= {arXiv preprint arXiv:cond-mat/0109409},
year = {2007}
}