Chiral transition in a strong magnetic background

Details Chiral transition in a strong magnetic background Chiral transition in a strong magnetic background

2008-04-09

arxiv.org/abs/0804.1452v1

Phys.Rev.D78:025016,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 7 figures

Scientific paper

10.1103/PhysRevD.78.025016

The presence of a strong magnetic background can modify the nature and the dynamics of the chiral phase transition at finite temperature. We compute the modified effective potential in the linear sigma model with quarks to one loop in the $\bar{MS}$ scheme for $N_{f}=2$. For fields $eB\sim 5 m_{\pi}^{2}$ and larger a crossover is turned into a weak first-order transition. We discuss possible implications for non-central heavy ion collisions at RHIC and LHC, and for the primordial QCD transition.

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