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Universality in radiative corrections for non-supersymmetric heterotic vacua
Properties of moduli-dependent gauge threshold corrections in non-supersymmetric heterotic vacua are reviewed. In the absence of space-time supersymmetry these amplitudes are no longer protected and receive contributions from the whole tower of string states, BPS and not. Never-theless, the differen...
Autores principales: | , , |
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Lenguaje: | eng |
Publicado: |
SISSA
2016
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.22323/1.258.0005 http://cds.cern.ch/record/2264399 |
Sumario: | Properties of moduli-dependent gauge threshold corrections in non-supersymmetric heterotic vacua are reviewed. In the absence of space-time supersymmetry these amplitudes are no longer protected and receive contributions from the whole tower of string states, BPS and not. Never-theless, the difference of gauge thresholds for non-Abelian gauge groups displays a remarkable universality property, even when supersymmetry is absent. We present a simple heterotic construction that shares this universal behaviour and expose the necessary conditions on the super-symmetry breaking mechanism for universality to occur. |
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