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arXiv · 2409.09283

Tachyonic effects on K\"ahler moduli stabilized inflaton potential in type-IIB/F theory

Abhijit Let·Buddhadeb Ghosh
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Abstract

We investigate the effects of inclusion of charged tachyonic open-string scalars in the perturbative and the non-perturbative K\"ahler moduli stabilizations in a geometry of three intersecting magnetized D7-brane stacks in type-IIB/F theory and also study the overall influence of this process on the inflaton potential, in a hybrid inflation scenario. We find that a tachyon lowers the minimum of the inflaton potential and assists to end the inflation. For simplicity, we have included one tachyon at a time in the present work and observe that this procedure preserves the features of slow-roll plateau of the potential. An interesting observation here is that the tachyonic part of the potential can be fine-tuned to get an almost zero minimum of the potential, thereby conforming to the small experimental value of the cosmological constant

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Abhijit Let, Buddhadeb Ghosh. 2024-09-14. Tachyonic effects on K\"ahler moduli stabilized inflaton potential in type-IIB/F theory. https://arxiv.org/abs/2409.09283

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