CRITICAL LINE AND BETHE-SALPETER EQUATION IN STRONG-COUPLING QED WITH FOUR-FERMION INTERACTIONS
1989 ◽
Vol 04
(07)
◽
pp. 605-612
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Keyword(s):
On the basis of Bethe-Salpeter equations for electron-positron bound states in strong-coupling quantum electrodynamics with additional four-fermion interactions, the formula for the critical line dividing the chiral-symmetry-breaking phase from the symmetric phase is derived. The beta functions near the critical line are calculated explicitly and the phase structure is discussed based on these beta functions.
1996 ◽
Vol 11
(10)
◽
pp. 785-793
◽
Keyword(s):
2007 ◽
Vol 22
(06)
◽
pp. 449-456
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Keyword(s):