F-term strings in the Bogomol'nyi limit are also BPS states

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dc.creatorAchucarro, A.
dc.creatorUrrestilla, J.
dc.date2004-07-22
dc.date2004-09-30
dc.date.accessioned2026-07-07T10:50:06Z
dc.date.available2026-07-07T10:50:06Z
dc.descriptionWe derive the Bogomol'nyi equations for supersymmetric Abelian F-term cosmic strings in four-dimensional flat space and show that, contrary to recent statements in the literature, they are BPS states in the Bogomol'nyi limit, but the partial breaking of supersymmetry is from N=2. The second supersymmetry is not obvious in the N=1 formalism, so we give it explicitly in components and in terms of a different set of N=1 chiral superfields. We also discuss the appearance of a second supersymmetry in D-term models, and the relation to N=2 F-term models. The analysis sheds light on an apparent paradox raised by the recent observation that D-term strings remain BPS when coupled to N=1 supergravity, whereas F-term strings break the supersymmetry completely, even in the Bogomol'nyi limit. Finally, we comment on their semilocal extensions and their relevance to cosmology.
dc.description11 pages; References added, minor corrections, matches published version
dc.identifierhttps://arxiv.org/abs/hep-th/0407193
dc.identifierhttp://arxiv.org/abs/hep-th/0407193
dc.identifierJHEP0408:050,2004
dc.identifierdoi:10.1088/1126-6708/2004/08/050
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/184435
dc.subjectHigh Energy Physics - Theory
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleF-term strings in the Bogomol'nyi limit are also BPS states
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