Effects of gauge boson mass on chiral and deconfinement phase transitions in QED₃

2016/08/16 by Pei-Lin Yin, Hai-Xiao Xiao, Yin, Pei-Lin +5
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph

paper · pdf · doi:10.48550/arxiv.1608.04619

arxiv created 2016/08/16 · arxiv updated 2016/08/17

Abstract

Based on the experimental observation that there is a coexisting region between the antiferromagnetic (AF) and d-wave superconducting (dSC) phases, the influences of gauge boson mass m_a on chiral symmetry restoration and deconfinement phase transitions in QED₃ are investigated simultaneously within a unified framework, i.e., Dyson-Schwinger equations. The results show that the chiral symmetry restoration phase transition in the presence of the gauge boson mass m_a is a typical second-order phase transition; the chiral symmetry restoration and deconfinement phase transitions are coincident; the critical number of fermion flavors N^c_f decreases as the gauge boson mass m_a increases and there exists a boundary that separates the N^c_f-m_a plane into chiral symmetry breaking/confinement region for (N_f^c, m_a) below the boundary and chiral symmetry restoration/deconfinement region for (N_f^c, m_a) above it.

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