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Seminars & Lectures

* TITLE

Search for dS vacua in type IIA strings on rigid CY

* SPEAKERS

Name	Affiliation	E-mail
Sergey Ketov	Tokyo Metropolitan University and Kavli IPMU	sergey.ketov(at)gmail.com

* HOST(Applicant)

Name	Affiliation	E-mail
Sergey Ketov	Tokyo Metropolitan University and Kavli IPMU	sergey.ketov(at)gmail.com

* DATE / TIME

2016-10-27, 10:00

* ABSTRACT

We consider a class of flux compactifications of type IIA strings on rigid Calabi-Yau manifolds, preserving N=2 local supersymmetry in four dimensions. Using an exact D-instanton corrected metric on the hypermultiplet moduli space, we derive a non-perturbative potential of all scalar fields. Applying this potential to moduli stabilization, we find a discrete set of exact vacua for axions. At these critical points, the stability problem is decoupled into two subspaces spanned by the axions and the other fields (dilaton and Kahler moduli), respectively. Whereas the stability of the axions is easily achieved, numerical analysis shows instabilities in the second subspace.

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