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Quantum solitons at strong coupling
1997
Physical Review D, Particles and fields
We examine the effect of one loop quantum corrections on the formation of nontopological solitons in a strongly coupled scalar-fermionic Yukawa theory. The exact one fermion loop contribution is incorporated by using a nonlocal method to correct the local derivative expansion approximation (DE) of the effective action. As the Yukawa coupling is increased we find that the nonlocal corrections play an increasingly important role. The corrections cause the scalar field to increase in depth while
doi:10.1103/physrevd.55.3742
fatcat:buim3oixgbavnjgpq3gey7mz34