On nonsupersymmetric string models and the decompactification problem

Abstract: We study 4d heterotic string compactifications exhibiting spontaneous supersymmetry breaking via the Scherk–Schwarz mechanism associated with two large internal dimensions. We identify a class of models with fermion–boson degeneracy that address some central issues in nonsupersymmetric string phenomenology including the elimination of tachyons and dilaton tadpoles and the suppression of the cosmological constant. In addition, we propose a novel solution to the decompactification problem related to the cancellation of the linear growth of the gauge part of the thresholds with a similar growth of the universal part.

general relativity and quantum cosmologyHEP - phenomenologyHEP - theorymathematical physics

Audience: researchers in the topic

CCTP HEP Seminars

Series comments: Description: Seminars in high energy physics

Weekly HEP Seminars in the broad spectrum of High Energy Physics at University of Crete.

Recordings of past seminars can be found at conference.physics.uoc.gr/b/hep-kzk-2ad