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Durham e-Theses
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On interpolations from SUSY to non-SUSY strings and their properties

AARONSON, BENEDICT,L,M (2019) On interpolations from SUSY to non-SUSY strings and their properties. Doctoral thesis, Durham University.

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Abstract

The interpolation from supersymmetric to non-supersymmetric heterotic theories is studied, via the Scherk-Schwarz compactification of supersymmetric $6D$ theories to $4D$. A general modular-invariant Scherk-Schwarz deformation is deduced from the properties of the $6D$ theories at the endpoints, which significantly extends previously known examples. This wider class of non-supersymmetric $4D$ theories opens up new possibilities for model building. The full one-loop cosmological constant of such theories is studied as a function of compactification radius for a number of cases, and the following interpolating configurations are found: two supersymmetric $6D$ theories related by a $T$-duality transformation, with intermediate $4D$ maximum or minimum at the string scale; a non-supersymmetric $6D$ theory interpolating to a supersymmetric $6D$ theory, with the $4D$ theory possibly having an AdS minimum; a ``metastable'' non-supersymmetric $6D$ theory interpolating via a $4D$ theory to a supersymmetric $6D$ theory.

Item Type:Thesis (Doctoral)
Award:Doctor of Philosophy
Keywords:String theory; Supersymmetry; String phenomenology; Compactifications; Spontaneous symmetry breaking
Faculty and Department:Faculty of Science > Physics, Department of
Thesis Date:2019
Copyright:Copyright of this thesis is held by the author
Deposited On:30 May 2019 11:09

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