Abstract
The order parameter of a finite system with a spontaneously broken continuous global symmetry acts as a quantum mechanical rotor. Both antiferromagnets with a spontaneously broken SU(2)s spin symmetry and massless QCD with a broken SU(2)L×SU(2)R chiral symmetry have rotor spectra when considered in a finite volume. When an electron or hole is doped into an antiferromagnet or when a nucleon is propagating through the QCD vacuum, a Berry phase arises from a monopole field and the angular momentum of the rotor is quantized in half-integer units.
| Original language | English |
|---|---|
| Article number | 077901 |
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 78 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2008 Oct 21 |
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)
Fingerprint Dive into the research topics of 'Rotor spectra, berry phases, and monopole fields: From antiferromagnets to QCD'. Together they form a unique fingerprint.
Cite this
Chandrasekharan, S., Jiang, F. J., Pepe, M., & Wiese, U. J. (2008). Rotor spectra, berry phases, and monopole fields: From antiferromagnets to QCD. Physical Review D - Particles, Fields, Gravitation and Cosmology, 78(7), [077901]. https://doi.org/10.1103/PhysRevD.78.077901