منابع مشابه
Kähler moduli inflation on large volume moduli stabilization
In this paper we present a two-field inflation model, which distinguishes itself with a non-canonical kinetic lagrangian and comes from the large volume approach to the moduli stabilization in flux compactification of type IIB superstring on a Calabi-Yau orientifold of h(1,2) > h(1,1) ≥ 4. The Kähler moduli are classified as volume modulus, heavy moduli and two light moduli. The axion-dilaton, ...
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In this paper we present a two-field inflation model, which distinguishes itself with a non-canonical kinetic lagrangian and comes from the large volume approach to the moduli stabilization in flux compactification of type IIB superstring on a Calabi-Yau orientifold of h(1,2) > h(1,1) ≥ 4. The Kähler moduli are classified as volume modulus, heavy moduli and two light moduli. The axion-dilaton, ...
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We study the problem of identifying the moduli fields in fermionic four-dimensional string models. We deform a free-fermionic model by introducing exactly marginal operators in the form of Abelian Thirring interactions on the world-sheet, and show that their couplings correspond to the untwisted moduli fields. We study the consequences of this method for simple free-fermionic models which corre...
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We show that under general conditions there is at least one natural inflationary direction for the Kähler moduli of type IIB flux compactifications. This requires a Calabi-Yau which has h2,1 > h1,1 > 2 and for which the structure of the scalar potential is as in the recently found exponentially large volume compactifications. We also need although these conditions may be relaxed at least one Kä...
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Hybrid inflation can be realised in low-energy effective string theory, as described using supergravity. We find that the coupling of moduli to the hybrid inflation sector in supergravity leads to a slope and a curvature for the inflaton potential. The ǫ and η parameters receive contributions at tree and one loop level which are not compatible with slow roll inflation. Furthermore the coupling ...
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ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2015
ISSN: 1475-7516
DOI: 10.1088/1475-7516/2015/09/040