Tachyonic effects on K\"ahler moduli stabilized inflaton potential in type-IIB/F theory
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
Keywords
Cite
@article{arxiv.2409.09283,
title = {Tachyonic effects on K\"ahler moduli stabilized inflaton potential in type-IIB/F theory},
author = {Abhijit Let and Buddhadeb Ghosh},
journal= {arXiv preprint arXiv:2409.09283},
year = {2024}
}
Comments
Accepted for publication in EPJC, 30 pages, 6 figures, 5 tables