Abel, Steven (2016) 'A dynamical mechanism for large volumes with consistent couplings.', Journal of high energy physics., 2016 (11). 085.
A mechanism for addressing the “decompactification problem” is proposed, which consists of balancing the vacuum energy in Scherk-Schwarzed theories against contributions coming from non-perturbative physics. Universality of threshold corrections ensures that, in such situations, the stable minimum will have consistent gauge couplings for any gauge group that shares the same NN = 2 beta function for the bulk excitations as the gauge group that takes part in the minimisation. Scherk-Schwarz compactification from 6D to 4D in heterotic strings is discussed explicitly, together with two alternative possibilities for the non-perturbative physics, namely metastable SQCD vacua and a single gaugino condensate. In the former case, it is shown that modular symmetries gives various consistency checks, and allow one to follow soft-terms, playing a similar role to R-symmetry in global SQCD. The latter case is particularly attractive when there is nett Bose-Fermi degeneracy in the massless sector. In such cases, because the original Casimir energy is generated entirely by excited and/or non-physical string modes, it is completely immune to the non-perturbative IR physics. Such a separation between UV and IR contributions to the potential greatly simplifies the analysis of stabilisation, and is a general possibility that has not been considered before.
|Full text:||(VoR) Version of Record|
Available under License - Creative Commons Attribution.
Download PDF (1229Kb)
|Full text:||(AM) Accepted Manuscript|
Download PDF (1417Kb)
|Publisher Web site:||https://doi.org/10.1007/JHEP11(2016)085|
|Publisher statement:||© The Author(s) 2016 Open Access. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.|
|Date accepted:||25 October 2016|
|Date deposited:||29 November 2016|
|Date of first online publication:||14 November 2016|
|Date first made open access:||No date available|
Save or Share this output
|Look up in GoogleScholar|