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Exponential suppression of the cosmological constant in nonsupersymmetric string vacua at two loops and beyond
Two independent criteria are presented that together guarantee exponential suppression of the two-loop cosmological constant in nonsupersymmetric heterotic strings. They are derived by performing calculations in both the full string theory and in its effective field theory, and come respectively fro...
| Autores principales: | , |
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| Lenguaje: | eng |
| Publicado: |
2017
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1103/PhysRevD.96.106013 http://cds.cern.ch/record/2244363 |