Perturbative moduli stabilisation in type IIB/F-theory framework

Antoniadis, Ignatios; Chen, Yifan; Leontaris, G.K.

doi:10.1140/epjc/s10052-018-6248-4

Cited by 64 publications

(135 citation statements)

References 48 publications

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“…This vacuum breaks supersymmetry since for constant superpotential the Fauxiliary component of the volume modulus superfield does not vanish, unlike KKLT [4] but similar to the large volume scenario (although for a different reason) [5,6]. In [7], we have shown that this minimum can be uplifted to positive energy when appropriate D-term contributions from the D7-branes are taken into account. Here, we will analyse again these contributions and make a quantitative argument for the existence of perturbative dS vacua at large volume and weak string coupling.…”

Section: D-terms and De Sitter Vacuamentioning

confidence: 79%

“…The interesting fact now is that the F-term potential has two distinct parts, both with the same power dependence but one of the two proportional to log(τ ) [7,26]:…”

Section: Corrections To the Kähler Potential And Runaway Moduli Behavmentioning

confidence: 99%

“…2, where the disk corresponds to a boundary (brane) or a crosscap (orientifold) and we considered the insertion of two 4d graviton zero-mode vertices. 7 The presence of the handle is needed to produce the localised correction in orbifolds, described in the previous subsection, while the presence of the boundary/crosscap is necessary to produce the desired logarithmic correction in the codimension-two case.…”

Section: -Branes and Logarithmic Correctionsmentioning

confidence: 99%

“…where we used V = (τ 1 τ 2 τ 3 ) 1/2 and we considered for simplicity the case of equal η i ≡ η, which is not a necessary condition for a global minimum once D-terms are included for all three mutually orthogonal D7-brane stacks [7]. In deriving the F-term contribution to the scalar potential, special care is needed for the dilaton dependence of the Kähler potential that enters non-trivially together with the volume and the other Kähler moduli which, in type IIB, all descend from N = 2 hypermultiplets.…”

Section: D-terms and De Sitter Vacuamentioning

confidence: 99%

“…Motivated by these facts, in a previous work [7], we studied the quantum corrections arising from a geometric configuration of three intersecting 7-branes in the framework of type IIB/Ftheory. The corrections break the no-scale structure of the Kähler potential and generate a non-zero F-term potential for the Kähler moduli.…”

Section: Introductionmentioning

confidence: 99%

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Logarithmic loop corrections, moduli stabilisation and de Sitter vacua in string theory

Antoniadis

Chen

Leontaris

2020

J. High Energ. Phys.

Self Cite

106

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We study string loop corrections to the gravity kinetic terms in type IIB compactifications on Calabi-Yau threefolds or their orbifold limits, in the presence of D7-branes and orientifold planes. We show that they exhibit in general a logarithmic behaviour in the large volume limit transverse to the D7-branes, induced by a localised four-dimensional Einstein-Hilbert action that appears at a lower order in the closed string sector, found in the past. Here, we compute the coefficient of the logarithmic corrections and use them to provide an explicit realisation of a mechanism for Kähler moduli stabilisation that we have proposed recently, which does not rely on non-perturbative effects and lead to de Sitter vacua. Our result avoids no-go theorems of perturbative stabilisation due to runaway potentials, in a way similar to the Coleman-Weinberg mechanism, and provides a counter example to one of the swampland conjectures concerning de Sitter vacua in quantum gravity, once string loop effects are taken into account; it thus paves the way for embedding the Standard Model of particle physics and cosmology in string theory.

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Section: D-terms and De Sitter Vacuamentioning

confidence: 79%

“…The interesting fact now is that the F-term potential has two distinct parts, both with the same power dependence but one of the two proportional to log(τ ) [7,26]:…”

Section: Corrections To the Kähler Potential And Runaway Moduli Behavmentioning

confidence: 99%

Section: -Branes and Logarithmic Correctionsmentioning

confidence: 99%

Section: D-terms and De Sitter Vacuamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Logarithmic loop corrections, moduli stabilisation and de Sitter vacua in string theory

Antoniadis

Chen

Leontaris

2020

J. High Energ. Phys.

Self Cite

106

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Weak Gravity Conjecture in de Sitter Space‐Time

Antoniadis

Benakli

2020

Fortschritte der Physik

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We propose a generalisation of the Weak Gravity Conjecture in de Sitter space by studying charged black‐holes and comparing the gravitational and an abelian gauge forces. Using the same condition as in flat space, namely the absence of black‐hole remnants, one finds that for a given mass m there should be a state with a charge q bigger than a minimal value qnormalminfalse(m,lfalse), depending on the mass and the de Sitter radius l, in Planck units. In the large radius flat space limit (large l), qnormalmin→m leading to the known result q>m/2, while in the highly curved case (small l) qmin behaves as ml. We also discuss the example of the gauged R‐symmetry in N=1 supergravity.

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UV Shadows in EFTs: Accidental Symmetries, Robustness and No‐Scale Supergravity

Burgess

Cicoli

Ciupke

et al. 2020

Fortschritte der Physik

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We argue that accidental approximate scaling symmetries are robust predictions of weakly coupled string vacua, and show that their interplay with supersymmetry and other (generalised) internal symmetries underlies the ubiquitous appearance of no-scale supergravities in low-energy 4D EFTs. We identify 4 nested types of no-scale supergravities, and show how leading quantum corrections can break scale invariance while preserving some no-scale properties (including non-supersymmetric flat directions). We use these ideas to classify corrections to the low-energy 4D supergravity action in perturbative 10D string vacua, including both bulk and brane contributions. Our prediction for the Kähler potential at any fixed order in ′ and string loops agrees with all extant calculations. p-form fields play two important roles: they spawn many (generalised) shift symmetries; and space-filling 4-forms teach 4D physics about higher-dimensional phenomena like flux quantisation. We argue that these robust symmetry arguments suffice to understand obstructions to finding classical de Sitter vacua, and suggest how to get around them in UV complete models.

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Perturbative moduli stabilisation in type IIB/F-theory framework

Cited by 64 publications

References 48 publications

Logarithmic loop corrections, moduli stabilisation and de Sitter vacua in string theory

Logarithmic loop corrections, moduli stabilisation and de Sitter vacua in string theory

Weak Gravity Conjecture in de Sitter Space‐Time

UV Shadows in EFTs: Accidental Symmetries, Robustness and No‐Scale Supergravity

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