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Topological solitons in a vacuumless system

D. Bazeia

hep-tharXiv:hep-th/9905184

Abstract

We investigate a model for a real scalar field in bidimensional space-time, described in terms of a positive semi-definite potential that presents no vacuum state. The system presents topological solutions of the BPS type, with energy density that follows a Lorentzian law. These BPS solutions differ from the standard -type kink, but they also support bosonic and fermionic zero modes.

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