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Resolving the critical bubble in SU(8) deconfinement transition
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abstract
Strongly coupled confining models with a first order phase transition present an interesting DM candidate. Near the critical temperature these models are strongly non-perturbative, and the critical bubble nucleation rate has so far only been estimated via approximative methods. As a model of a strong first order deconfinement transition, we simulate 4D SU(8) pure gauge model with multicanonical Monte Carlo. We demonstrate that resolving the critical bubble is possible in a strongly coupled model. We calculate the free energy of a critical bubble, which gives a rough upper limit for the nucleation rate. For the parameter points we investigated, the thin-wall approximation for the critial bubble free energy is off by a factor of 2, overestimating the rate at least by a factor of $e^{10}$.
Forward citations
Cited by 2 Pith papers
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The confined-deconfined surface tension in SU(N) gauge theories at large N
The interface tension and latent heat of the SU(N) deconfinement transition scale as N^2 in the continuum limit, with sigma/Tc^3 = 0.0189(11) N^2 - 0.190(19) and L/Tc^4 = 0.354(2) N^2 - 1.65(10).
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Testing nucleation calculations for strong phase transitions
A nonperturbative lattice calculation finds that perturbative bubble nucleation rates in a tree-level barrier scalar theory agree only qualitatively, with |log Γ| off by 20% at one loop and 100% at tree level.
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