Symmetry restoration at finite temperature with weak magnetic fields

Abstract

We study symmetry restoration at finite temperature in the standard model during the electroweak phase transition in the presence of a weak magnetic field. We compute the finite temperature effective potential up to the contribution of ring diagrams, using the broken phase degrees of freedom, and keep track of the gauge parameter dependence of the results. We show that under these conditions, the phase transition becomes stronger first order.

29 pages, 13 figures, to appear in Phys. Rev. D. [v2]: replaced figures 7-13 and minor corrections to typos, matches Phys. Rev. D version

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• QCD phase diagram in a magnetized medium from the chiral symmetry perspective: The linear sigma model with quarks and the Nambu--Jona-Lasinio model effective descriptions
• Effects of quark anomalous magnetic moment on the thermodynamical properties and mesonic excitations of magnetized hot and dense matter in PNJL model
• Thermal chiral and deconfining transitions in the presence of a magnetic background
• Magnetic Fields at First Order Phase Transition: A Threat to Electroweak Baryogenesis
• Thermal effects on $\rho$ meson properties in an external magnetic field
• Magnetic catalysis of a charged Bose-Einstein condensate
• Medium effects on the electrical and Hall conductivities of a hot and magnetized pion gas
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• Thermomagnetic modification of the anomalous magnetic moment of quarks using the NJL model
• Warm inflation in the presence of magnetic fields
• Phase diagram for charged scalars in a magnetic field at finite temperature
• Charge asymmetry from CP-violating fermion scattering off bubble walls during the electroweak phase transition
• Toward a magnetic warm inflation scenario
• A non-perturbative study of the evolution of cosmic magnetised sources