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Theory Seminar (High Energy/Cosmology)

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Events on Friday, April 15th, 2016

D6-branes, axion monodromy inflation and moduli backreaction
Time: 2:00 pm
Place: 5280 Chamberlin Hall
Speaker: Aitor Landete, Instituto de Fisica Teorica, Madrid
Abstract: We develop new scenarios of large field inflation in type IIA string compactifications in which the key ingredient is a D6-brane that generates a bilinear superpotential which couples the brane position modulus to a Kahler modulus. This feature allows us to construct two different models where the inflaton candidate could be the B-field axion or the D6-brane Wilson Line where all the remaining moduli are stabilized supersymmetrically. The scalar potential has the multi-branched structure typical of F-term axion monodromy models and, near its supersymmetric minima, it is described by a 4d supergravity model of chaotic inflation with a stabilizer field. Finally we analyze the effects, in our model, of integrating out the relevant closed string moduli consistently.
Host: Pablo Soler
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