Gravitational waves in warped compactifications

Andriot, David; Tsimpis, Dimitrios

doi:10.1007/jhep06(2020)100

Cited by 34 publications

(79 citation statements)

References 62 publications

(122 reference statements)

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“…There are also other, older and more general, open problems with any solutions of massive type IIA with O-planes. In our approximate solution, near an O6-plane we obtain an warping behaviour of the form e −4A ∼ 1 − gs s r [53]. This defines a region in which we enter strong coupling and the supergravity approximation breaks down.…”

Section: Jhep08(2020)087mentioning

confidence: 63%

“…It is important to point out that the expansion for the B i 's in terms of Fourier modes should be understood as a formal solution since the sum is not convergent. A regularised version of these Green functions using the Jacobi theta function was originally suggested in [52] and some details have been recently studied in [53]. For practical purposes, the regularised functions behave as standard Green functions in flat space when approximating the source and go to zero as we move away.…”

Section: Jhep08(2020)087mentioning

confidence: 99%

See 1 more Smart Citation

On supersymmetric AdS4 orientifold vacua

Marchesano

Palti

Quirant

et al. 2020

J. High Energ. Phys.

136

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In this work we study ten-dimensional solutions to type IIA string theory of the form AdS 4 × X 6 which contain orientifold planes and preserve N = 1 supersymmetry. In particular, we consider solutions which exhibit some key features of the four-dimensional DGKT proposal for compactifications on Calabi-Yau manifolds with fluxes, and in this sense may be considered their ten-dimensional uplifts. We focus on the supersymmetry equations and Bianchi identities, and find solutions to these that are valid at the twoderivative level and at first order in an expansion parameter which is related to the AdS cosmological constant. This family of solutions is such that the background metric is deformed from the Ricci-flat one to one exhibiting SU(3) × SU(3)-structure, and dilaton gradients and warp factors are induced.

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Section: Jhep08(2020)087mentioning

confidence: 63%

Section: Jhep08(2020)087mentioning

confidence: 99%

On supersymmetric AdS4 orientifold vacua

Marchesano

Palti

Quirant

et al. 2020

J. High Energ. Phys.

136

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show abstract

“…having a small

N_{f}^{2}

, both the first scalar eigenvalue and

1 / L^{2}

are very different than the curvature scale fixed by

false| {scriptR}_{6} false|

. An example is the explicit analysis of the Laplacian spectrum on the nilmanifold in []: in a regime of “small fiber”, one generates the desired hierarchy, where indeed

false| {scriptR}_{6} false|

is small compared to the first scalar eigenvalue and to

1 / L^{2}

.…”

mentioning

confidence: 99%

Open Problems on Classical de Sitter Solutions

Andriot

2019

Fortschritte der Physik

Self Cite

122

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Classical 10d string backgrounds with a 4d de Sitter space‐time, D‐brane and orientifold sources, are commonly believed to satisfy the following: 1.There is no classical de Sitter solution with parallel sources. 2.Classical de Sitter solutions with intersecting sources are unstable. 3.Classical de Sitter solutions cannot have at the same time a large internal volume, a small string coupling, a bounded number of orientifolds and quantized fluxes. These three conjectures are of particular relevance to the swampland program, and if true, they challenge the connection of string theory to cosmology. We restrict here to a standard solution ansatz for which the problem is well‐defined, and we still fail to prove analytically any of these conjectures. While developing new tools and obtaining new constraints, we identify remaining corners of parameter space where counter‐examples to these conjectures could be found.

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“…Two appendices on relevant group theory and on further speculation about space invasion complete the paper. Other results on KK graviton spectra in related contexts include [15,16,[20][21][22][23][24][25][26][27][28][29][30].…”

Section: Jhep10(2020)041mentioning

confidence: 99%

A cubic deformation of ABJM: the squashed, stretched, warped, and perturbed gets invaded

Cesàro

Larios

Varela

2020

J. High Energ. Phys.

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A superpotential deformation that is cubic in one of the chiral superfields of ABJM makes the latter theory flow into a new $$ \mathcal{N} $$ N = 2 superconformal phase. This is holographically dual to a warped AdS4×wS7 solution of M-theory equipped with a squashed and stretched metric on S7. We determine the spectrum of spin-2 operators of the cubic deformation at low energies by computing the spectrum of Kaluza-Klein (KK) gravitons over the dual AdS4 solution. We calculate, numerically, the complete graviton spectrum and, analytically, the spectrum of gravitons that belong to short multiplets. We also use group theory to assess the structure of the full KK spectrum, and conclude that $$ \mathcal{N} $$ N = 2 supermultiplets cannot be allocated KK level by KK level. This phenomenon, usually referred to as “space invaders scenario”, is also known to occur for another AdS4 solution based on a different squashed S7.

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Gravitational waves in warped compactifications

Cited by 34 publications

References 62 publications

On supersymmetric AdS4 orientifold vacua

On supersymmetric AdS4 orientifold vacua

Open Problems on Classical de Sitter Solutions

A cubic deformation of ABJM: the squashed, stretched, warped, and perturbed gets invaded

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