On the vacuum stability in the superrenormalized Yukawa-type theory
Journal Article
·
· International Journal of Modern Physics A; (USA)
- Lab. of Theoretical Physics, Joint Inst. for Nuclear Research, SU-141980, Dubna (SU)
The stability of the ground state and the possibility of the appearance of a phase transition in the supernormalizable nonlocal Yukawa-type field theory are investigated. A variational estimation of the upper bound for the effective potential is obtained. It is shown that there exists a finite critical value for the boson-fermion coupling constant. The initial vacuum becomes unstable when this coupling constant exceeds the critical value. As a result, the system under consideration goes into the phase with nonvanishing expectation value of the field.
- OSTI ID:
- 6474385
- Journal Information:
- International Journal of Modern Physics A; (USA), Vol. 5:3; ISSN 0217-751X
- Country of Publication:
- United States
- Language:
- English
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71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
BOSON-FERMION SYMMETRY
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GROUND STATES
PHASE TRANSFORMATIONS
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