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Beta-functions for a SU(2) Matrix Model in 2 + epsilon Dimensions

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arxiv hep-ph/0512245 v2 pith:JE56S7HV submitted 2005-12-20 hep-ph

Michaela Oswald , Robert D. Pisarski This is my paper · ORCID
classification hep-ph
keywords modelbeta-functionscouplingdimensionsepsilonmatrixasymptoticallycompute
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To investigate the non-perturbative, electric sector of a deconfined gauge theory at nonzero temperature, we consider a SU(2) matrix model. We compute beta-functions to one loop order for the simplest extension of the O(4) nonlinear sigma model, which involves three coupling constants. Computing in the ultraviolet limit in 2 + epsilon dimensions, we find that at least one coupling is not asymptotically free.

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  1. Shear and bulk viscosity for a pure glue theory using an effective matrix model

    hep-ph 2025-04 conditional novelty 6.0 of 10

    In a matrix model of the semi-QGP with teen ghost fields, zeta/s is largest at T_d, comparable to eta/s, while eta/s stays well above the AdS/CFT bound.

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