We describe two new types of vacua for ten-dimensional string models without supersymmetry, in which dilaton potentials are compensated by constant electric or magnetic fields. These arise from $\alpha '$ corrections to the equations of motion, and we comment on the reliability of this expansion. We identify explicitly unstable singlet scalar perturbations in the orientifold vacua, and we argue that in both cases additional instabilities are induced by non-abelian couplings.

On New Vacua of non-Supersymmetric Strings

Raucci, Salvatore
2022

Abstract

We describe two new types of vacua for ten-dimensional string models without supersymmetry, in which dilaton potentials are compensated by constant electric or magnetic fields. These arise from $\alpha '$ corrections to the equations of motion, and we comment on the reliability of this expansion. We identify explicitly unstable singlet scalar perturbations in the orientifold vacua, and we argue that in both cases additional instabilities are induced by non-abelian couplings.
2022
Settore FIS/02 - Fisica Teorica, Modelli e Metodi Matematici
High Energy Physics - Theory; High Energy Physics - Theory; General Relativity and Quantum Cosmology; High Energy Physics - Phenomenology
   Supersymmetry Breaking with Fields, Strings and Branes. Cod. 2017CC72MK_001
   Ministero della pubblica istruzione, dell'università e della ricerca
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11384/143523
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