Where have all the Goldstone bosons gone?
Abstract
According to a commonly held view of spontaneously broken symmetry in gauge theories, troublesome Nambu-Goldstone bosons are effectively eliminated by turning into longitudinal modes of a massive vector meson. This note shows that, this is not in fact, a consistent view of the role of Nambu-Goldstone bosons in such theories. These particles necessarily appear as gauge excitations, whenever they are formulated in a manifestly covariant gauge. The radiation gauge provides therefore the dual advantage of circumventing the Goldstone theorem and making evident the disappearance of these particles from the physical spectrum.
- Publication:
-
Modern Physics Letters A
- Pub Date:
- March 2014
- DOI:
- 10.1142/S0217732314500461
- arXiv:
- arXiv:1401.6924
- Bibcode:
- 2014MPLA...2950046G
- Keywords:
-
- 02.20.-a;
- 03.65.Fd;
- 02.20.Sv;
- 03.65.-w;
- Group theory;
- Algebraic methods;
- Lie algebras of Lie groups;
- Quantum mechanics;
- High Energy Physics - Theory;
- High Energy Physics - Phenomenology
- E-Print:
- 4 pages