The heterotic string at high temperature (or with strong supersymmetry breaking)

Perturbative heterotic string theory develops a single complex tachyonic mode beyond the Hagedorn temperature. We calculate the quartic effective potential for this tachyonic mode at the critical temperature. Equivalently, we determine the quartic effective potential for strong supersymmetric breaki...

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Published in:arXiv.org 2011-09
Main Authors: Schulgin, Waldemar, Troost, Jan
Format: Article
Language:English
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Boundary conditions
Broken symmetry
Critical temperature
Fermions
High temperature
String theory
Supersymmetry
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description Perturbative heterotic string theory develops a single complex tachyonic mode beyond the Hagedorn temperature. We calculate the quartic effective potential for this tachyonic mode at the critical temperature. Equivalently, we determine the quartic effective potential for strong supersymmetric breaking via anti-perdiodic boundary conditions for fermions on a small circle. We give many details of the heterotic tachyon scattering amplitudes, including a unitarity check to fix all normalization constants. We discuss difficulties in obtaining an effective action valid at all radii. We argue that in certain variables, the quartic term in the potential is radius independent. Speculations on the properties of a new strongly curved phase that could occur after tachyon condensation are offered.
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subjects Boundary conditions
Broken symmetry
Critical temperature
Fermions
High temperature
String theory
Supersymmetry
title The heterotic string at high temperature (or with strong supersymmetry breaking)
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