The 't Hooft interaction at finite T and $μ$: Beyond the mean field theory

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dc.creatorUmino, Yasuo
dc.creatorVento, Vicente
dc.date2000-07-19
dc.date2000-12-06
dc.date.accessioned2026-07-07T03:42:04Z
dc.date.available2026-07-07T03:42:04Z
dc.descriptionWe use the N-quantum approach (NQA) to quantum field theory to construct a solution of the two flavor effective instanton induced `t Hooft interaction model valid for any temperature (T) and chemical potential ($μ$) beyond the mean field theory. The model contains only the $\bar{q}q$ channels. In constructing this solution we calculate the masses, widths and coupling constants of bound $σ$ and resonant color $\bar{3}$ scalar diquark states. We find that the chemical potential induced by the interaction cancel exactly for all values of T in contrast to the Nambu-Jona-Lasinio model. Our method can also be extended to include the qq channels in the model Lagrangian and we discuss how the NQA can be used to study the properties of bound diquark states at finite T and $μ$.
dc.description16 pages, 2 figures. Major editorial changes including the title and the abstract but no changes in results
dc.identifierhttps://arxiv.org/abs/hep-ph/0007210
dc.identifierhttp://arxiv.org/abs/hep-ph/0007210
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/39786
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Lattice
dc.subjectHigh Energy Physics - Theory
dc.subjectNuclear Theory
dc.titleThe 't Hooft interaction at finite T and $μ$: Beyond the mean field theory
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