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A new de Sitter solution with a weakly warped deformed conifold

Bruno Valeixo Bento, Dibya Chakraborty, Susha Parameswaran, Ivonne Zavala Carrasco Orcid Logo

Journal of High Energy Physics, Volume: 2021, Issue: 12

Swansea University Author: Ivonne Zavala Carrasco Orcid Logo

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DOI (Published version): 10.1007/jhep12(2021)124

Abstract

We revisit moduli stabilisation for type IIB flux compactifications that include a warped throat region corresponding to a warped deformed conifold, with an anti-D3-brane sitting at its tip. The warping induces a coupling between the conifold’s deformation modulus and the bulk volume modulus in the...

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Published in: Journal of High Energy Physics
ISSN: 1029-8479
Published: Springer Science and Business Media LLC 2021
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa61263
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Abstract: We revisit moduli stabilisation for type IIB flux compactifications that include a warped throat region corresponding to a warped deformed conifold, with an anti-D3-brane sitting at its tip. The warping induces a coupling between the conifold’s deformation modulus and the bulk volume modulus in the Kähler potential. Previous works have studied the scalar potential assuming a strong warping such that this coupling term dominates, and found that the anti-D3-brane uplift may destabilise the conifold modulus and/or volume modulus, unless flux numbers within the throat are large, which makes tadpole cancellation a challenge. We explore the regime of parameter space corresponding to a weakly-but-still warped throat, such that the coupling between the conifold and volume moduli is subdominant. We thus discover a new metastable de Sitter solution within the four-dimensional effective field theory. We discuss the position of this de Sitter vacuum in the string theory landscape and swampland.
Keywords: Flux compactifications; Superstring Vacua
College: Faculty of Science and Engineering
Funders: Article funded by SCOAP3
Issue: 12

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