A New de Sitter Solution with a Weakly Warped Deformed Conifold. (arXiv:2105.03370v2 [hep-th] UPDATED)
<a href="http://arxiv.org/find/hep-th/1/au:+Bento_B/0/1/0/all/0/1">Bruno Valeixo Bento</a>, <a href="http://arxiv.org/find/hep-th/1/au:+Chakraborty_D/0/1/0/all/0/1">Dibya Chakraborty</a>, <a href="http://arxiv.org/find/hep-th/1/au:+Parameswaran_S/0/1/0/all/0/1">Susha L. Parameswaran</a>, <a href="http://arxiv.org/find/hep-th/1/au:+Zavala_I/0/1/0/all/0/1">Ivonne Zavala</a>
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
K”ahler 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.
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
K”ahler 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.
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