Thraxions: towards full string models

Carta, Federico; Righi, Nicole; Westphal, Alexander; Mininno, Alessandro

doi:10.1007/JHEP01(2022)082

Journal Article

PUBDB-2022-01013

Thraxions: towards full string models

Carta, F.DESY* ; Mininno, A. (Corresponding author)Extern* ; Righi, N.DESY* ; Westphal, A.DESY*

2022
SISSA [Trieste]

Journal of high energy physics 01(1), 082 (2022) [10.1007/JHEP01(2022)082]

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Please use a persistent id in citations: doi:10.1007/JHEP01(2022)082 doi:10.3204/PUBDB-2022-01013

Report No.: DESY-21-152; IFT-UAM/CSIC-21-106; ZMP-HH/21-18; arXiv:2110.02963

Abstract: We elucidate various aspects of the physics of thraxions, ultra-light axions arising at Klebanov-Strassler multi-throats in the compactification space of IIB superstring theory. We study the combined stabilization of Kähler moduli and thraxions, showing that under reasonable assumptions, one can solve the combined problem both in a KKLT and a LVS setup. We find that for non-minimal multi-throats, the thraxion mass squared is three-times suppressed by the throat warp factor. However, the minimal case of a double-throat can preserve the six-times suppression as originally found. We also discuss the backreaction of a non-vanishing thraxion vacuum expectation value on the geometry, showing that it induces a breaking of the imaginary self-duality condition for 3-form fluxes. This in turn breaks the Calabi-Yau structure to a complex manifold one. Finally, we extensively search for global models which can accommodate the presence of multiple thraxions within the database of Complete Intersection Calabi-Yau orientifolds. We find that each multi-throat system holds a single thraxion. We further point out difficulties in constructing a full-fledged global model, due to the generic presence of frozen-conifold singularities in a Calabi-Yau orientifold. For this reason, we propose a new database of CICY orientifolds that do not have frozen conifolds but that admit thraxions.

Keyword(s): orientifold: Calabi-Yau ; moduli: Kaehler ; conifold ; axion ; moduli: stability ; throat ; string model: Type IIB ; Klebanov-Strassler model ; torsion ; Flux compactifications ; Superstring Vacua ; Supersymmetry Breaking

Classification:

ddc:530

Note: v2: typos corrected, JHEP accepted; v1: 41 pages + 2 appendices

Contributing Institute(s):

Theorie-Gruppe (T)

Research Program(s):

Experiment(s):

No specific instrument

Appears in the scientific report 2022

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Medline

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