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Quasiparticle description of strongly coupled plasmas
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abstract
The extrapolation of truncated perturbative series to the large coupling regime is not reliable since the accuracy of the calculations cannot be improved systematically by a finite set of higher order terms. Instead, a nonperturbative approach is proposed here to describe the thermodynamics of strongly coupled plasmas. Within the $\phi^4$ theory, it is derived from the Luttinger-Ward theorem and amounts to a quasiparticle description. The approach is extended to the quark-gluon plasma. Even close to the confinement temperature it is found to be in a good agreement with lattice data of several gauge systems. The model is applied to predict the equation of state of the quark-gluon plasma with realistic quark masses.
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Cited by 1 Pith paper
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Constraint on the magnetic field for the stable strange quark matter
A quasiparticle model predicts a lower limit on the magnetic field required for absolutely stable strange quark matter, with the limit rising as quark coupling and vacuum bag constant increase.
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