The Instanton Density in a Quark Gas
Sep, 198013 pages
Published in:
- Nucl.Phys.B 183 (1981) 182-194
- Published: 1981
Report number:
- CERN-TH-2941
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Abstract: (Elsevier)
We consider the fermion determinant in an instanton background for a fixed density of quarks. For heavy quarks, instantons of scale sizes greater than the Fermi momentum ( p F ) of the quark gas are strongly suppressed; p F acts as an infrared cut-off on the instanton density. For light quarks, we present asymptotic estimates of the determinant and suggest that, in the strictly massless case, isolated instantons should be completely suppressed and only instanton-anti-instanton pairs should play a role.- QUANTUM CHROMODYNAMICS
- temperature dependence
- GAUGE FIELD THEORY: CRITICAL PHENOMENA
- QUARK: GAS
- MODEL: GAS
- FIELD EQUATIONS: INSTANTON
- FIELD THEORY: PATH INTEGRAL
- FUNCTIONAL ANALYSIS
- heavy quark
- PERTURBATION THEORY: HIGHER-ORDER
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