The role of monopoles in a Gluon Plasma

Details The role of monopoles in a Gluon Plasma The role of monopoles in a Gluon Plasma

2008-11-25

arxiv.org/abs/0811.4174v1

Phys.Rev.D80:034004,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

60 pages, 15 Figures

Scientific paper

10.1103/PhysRevD.80.034004

We study the role of magnetic monopoles at high enough temperature $T>2T_c$, when they can be considered heavy, rare objects embedded into matter consisting mostly of the usual "electric" quasiparticles, quarks and gluons. We review available lattice results on monopoles at finite temperatures. Then we proceed to classical and quantum charge-monopole scattering, solving the problem of gluon-monopole scattering for the first time. We find that, while this process hardly influences thermodynamic quantities, it does produce a large transport cross section, significantly exceeding that for pQCD gluon-gluon scattering up to quite high $T$. Thus, in spite of their relatively small density at high $T$, monopoles are extremely important for QGP transport properties, keeping viscosity small enough for hydrodynamics to work at LHC.

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