Topological solitons in a vacuumless system

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 $\tanh$-type kink, but they also support bosonic and fermionic zero modes.

Revtex, 07 pages, no figures

References in corpus (1)

• Solitons in systems of coupled scalar fields

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