Is there really a phase transition for the Yang-Mills instanton gas

Journal Article · Tue Apr 01 04:00:00 EST 1980 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:6564422

Ilgenfritz, E; Kazakov, D I; Mueller-Preussker, M

The conditions for the existence of a first-order bag-to-vacuum phase transition in the Yang-Mills instanton gas, as suggested by Callan, Dashen, and Gross, are examined critically. It is shown that instanton suppression by external electric fields is much weaker if rotational degrees of freedom are taken into account. As before, a phase transition is possible, but only for considerably higher values of the coupling constant. Whether this is a first-order transition (which is important for bag formation) depends essentially on the mean-field ansatz for instanton interactions. It is shown that the appearance of a spontaneous magnetization is also possible.

• Research Organization: Joint Institute for Nuclear Research, Dubna, USSR
• OSTI ID: 6564422
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 31:4; ISSN SJNCA
• Country of Publication: United States
• Language: English

Related Subjects

645204* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions & Properties
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BAG MODEL
COMPOSITE MODELS
ELECTRIC FIELDS
EXTENDED PARTICLE MODEL
INSTANTONS
MAGNETIZATION
MATHEMATICAL MODELS
PARTICLE MODELS
PHASE TRANSFORMATIONS
QUARK MODEL
QUASI PARTICLES
YANG-MILLS THEORY