Supergravity and Supersymmetry Breaking in Four and Five Dimensions

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dc.creatorEllis, John
dc.creatorLalak, Zygmunt
dc.creatorPokorski, Stefan
dc.creatorThomas, Steven
dc.date1999-06-18
dc.date.accessioned2026-07-07T11:36:23Z
dc.date.available2026-07-07T11:36:23Z
dc.descriptionWe discuss supersymmetry breaking in the field-theoretical limit of the strongly-coupled heterotic string compactified on a Calabi-Yau manifold, from the different perspectives of four and five dimensions. The former applies to light degrees of freedom below the threshold for five-dimensional Kaluza-Klein excitations, whereas the five-dimensional perspective is also valid up to the Calabi-Yau scale. We show how, in the latter case, two gauge sectors separated in the fifth dimension are combined to form a consistent four-dimensional supergravity. In the lowest order of the $κ^{2/3}$ expansion, we show how a four-dimensional supergravity with gauge kinetic function $f_{1,2}=S$ is reproduced, and we show how higher-order terms give rise to four-dimensional operators that differ in the two gauge sectors. In the four-dimensional approach, supersymmetry is seen to be broken when condensates form on one or both walls, and the goldstino may have a non-zero dilatino component. As in the five-dimensional approach, the Lagrangian is not a perfect square, and we have not identified a vacuum with broken supersymmetry and zero vacuum energy. We derive soft supersymmetry-breaking terms for non-standard perturbative embeddings, that are relevant in more general situations such as type I/type IIB orientifold models.
dc.description17 pages, Latex
dc.identifierhttps://arxiv.org/abs/hep-th/9906148
dc.identifierhttp://arxiv.org/abs/hep-th/9906148
dc.identifierNucl.Phys.B563:107-124,1999
dc.identifierdoi:10.1016/S0550-3213(99)00607-0
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/198901
dc.subjectHigh Energy Physics - Theory
dc.subjectHigh Energy Physics - Phenomenology
dc.titleSupergravity and Supersymmetry Breaking in Four and Five Dimensions
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