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Title: Quark ensembles with the infinite correlation length

A number of exactly integrable (quark) models of quantum field theory with the infinite correlation length have been considered. It has been shown that the standard vacuum quark ensemble—Dirac sea (in the case of the space-time dimension higher than three)—is unstable because of the strong degeneracy of a state, which is due to the character of the energy distribution. When the momentum cutoff parameter tends to infinity, the distribution becomes infinitely narrow, leading to large (unlimited) fluctuations. Various vacuum ensembles—Dirac sea, neutral ensemble, color superconductor, and BCS state—have been compared. In the case of the color interaction between quarks, the BCS state has been certainly chosen as the ground state of the quark ensemble.
Authors:
 [1] ;  [2]
  1. National Academy of Sciences of Ukraine, Bogoliubov Institute for Theoretical Physics (Ukraine)
  2. Joint Institute for Nuclear Research (Russian Federation)
Publication Date:
OSTI Identifier:
22472437
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 120; Journal Issue: 1; Other Information: Copyright (c) 2015 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BCS THEORY; COLOR MODEL; COMPARATIVE EVALUATIONS; CORRELATIONS; ENERGY SPECTRA; FLUCTUATIONS; GROUND STATES; INTEGRAL CALCULUS; QUANTUM FIELD THEORY; QUARKS; SPACE-TIME; SUPERCONDUCTORS