The structure of the vacuum in gauge theories and cosmology

Details The structure of the vacuum in gauge theories and cosmology The structure of the vacuum in gauge theories and cosmology

Nov 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979zhpmr..30..674l&link_type=abstract

(ZHETF Pis'ma v Redaktsiiu, vol. 30, Nov. 20, 1979, p. 674-677.) JETP Letters, vol. 30, Nov. 20, 1979, p. 638-641. Translation.

Mathematics

Cosmology, Gauge Invariance, Ground State, Quantum Chromodynamics, Vacuum, Black Body Radiation, Transformations (Mathematics)

Scientific paper

Arguments showing that if a certain parameter (theta) characterizing the 'vacuums' in quantum chromodynamics and other gauge theories is nonvanishing then the ground state in quantum chromodynamics is actually not a theta vacuum, but is characterized by a density matrix, are presented. This in turn implies averaging over all possible theta, and as a result all effects of strong CP violation in the gauge theories vanish. The density matrix may then lead to the existence of blackbody radiation from the surface of the horizon.

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