Spontaneously Broken Spacetime Symmetries and Goldstone's Theorem
High Energy Physics - Theory
2009-11-07 v2 Condensed Matter
High Energy Physics - Phenomenology
Abstract
Goldstone's theorem states that there is a massless mode for each broken symmetry generator. It has been known for a long time that the naive generalization of this counting fails to give the correct number of massless modes for spontaneously broken spacetime symmetries. We explain how to get the right count of massless modes in the general case, and discuss examples involving spontaneously broken Poincare and conformal invariance.
Cite
@article{arxiv.hep-th/0110285,
title = {Spontaneously Broken Spacetime Symmetries and Goldstone's Theorem},
author = {Ian Low and Aneesh V. Manohar},
journal= {arXiv preprint arXiv:hep-th/0110285},
year = {2009}
}
Comments
4 pages; 1 figure; v2: minor corrections. version to appear on PRL