Chiral global embedding of Fibre Inflation with D 3 ¯ $$ \overline{\textrm{D}3} $$ uplift
Abstract We carefully analyse the challenges posed by the construction of type IIB chiral global embeddings of Fibre Inflation with D 3 ¯ $$ \overline{\textrm{D}3} $$ uplift to a de Sitter vacuum. We present an explicit example involving an h 1,1 = 4 Calabi-Yau manifold with a K3 fibration and a del...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2025-06-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP06(2025)090 |
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| Summary: | Abstract We carefully analyse the challenges posed by the construction of type IIB chiral global embeddings of Fibre Inflation with D 3 ¯ $$ \overline{\textrm{D}3} $$ uplift to a de Sitter vacuum. We present an explicit example involving an h 1,1 = 4 Calabi-Yau manifold with a K3 fibration and a del Pezzo divisor supporting non-perturbative effects. The chosen orientifold involution induces O3-planes that can be placed on top of each other at the tip of the throat of a deformed conifold singularity. The D7-brane sector contains standard magnetised branes and a Whitney brane. The former induce chiral matter and generate quantum effects that stabilise the Kähler moduli, while the latter helps to increase the total D3-charge. We study in detail the constraints on the parameter space leading to an observationally viable inflationary dynamics, finding several regions where the effective field theory is under control. |
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| ISSN: | 1029-8479 |