Journal
PHYSICAL REVIEW D
Volume 94, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.94.025036
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Funding
- NSERC of Canada
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Spontaneous chiral symmetry breaking in three-dimensional (d = 3) quantum electrodynamics is understood as annihilation of an infrared-stable fixed point that describes the large-N conformal phase by another unstable fixed point at a critical number of fermions N = N-c. We discuss the root of universality of N-c in this picture, together with some features of the phase boundary in the (d, N) plane. In particular, it is shown that as d -> 4, N-c -> 0 with a constant slope, our best estimate of which suggests that N-c = 2.89 in d = 3.
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