The spectrum of marginally-deformed $$ \mathcal{N} $$ = 2 CFTs with AdS4 S-fold duals of type IIB

Cesàro, Mattia; Larios, Gabriel; Varela, Oscar

doi:10.1007/jhep12(2021)214

Cited by 19 publications

(18 citation statements)

References 51 publications

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“…In this manner, the 𝜑 parameter was identified with a marginal deformation specifying a direction in a conformal manifold of N = 2 S-fold CFT's [26,27]. The apparent non-compactness of the parameter 𝜑, at least in the four-dimensional effective description, has been the subject of recent studies and puzzles [26,28]. Working out its uplift to ten dimensions could shed some new light on this question.…”

Section: N = 2 and Su(2) × U(1) Symmetric S-foldmentioning

confidence: 99%

“…where V 0 denotes the coset element at the undeformed S-fold AdS 4 vacuum and V 𝜒 denotes the non-compact E 7 (7) transformation induced by the constant flat deformation 𝜒 . We see from (28) that the undeformed S-fold V 0 can be thought of as a seed solution from which we can generate a larger class of solutions upon acting with V 𝜒 . However, this is not the end of the story.…”

Section: Flat Deformations Of Type Iib S-folds: Four-dimensional Picturementioning

confidence: 99%

“…with 𝜒 ≡ 𝜒 𝑖 𝑗 being valued in the Cartan subalgebra of so (6). In summary, turning on a specific element 𝜒 in the Cartan subalgebra of the residual symmetry group G 0 and performing the minimal replacement in (28) still extremises the scalar potential of the original theory and therefore can be seen as a solution generating technique. However, this will break the G 0 symmetry down to the subgroup commuting with 𝜒 .…”

Section: Flat Deformations Of Type Iib S-folds: Four-dimensional Picturementioning

confidence: 99%

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Type IIB S-folds: flat deformations, holography and stability

Guarino¹,

Sterckx²

2022

Preprint

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We review recent progress in the study of S-folds in light of the gauge/gravity duality and the AdS swampland conjecture. S-folds correspond to non-geometric backgrounds of type IIB supergravity of the form AdS 4 × S 1 × M that involve a non-trivial SL(2, Z) (S-duality) monodromy for the type IIB fields when moving around the S 1 . We present four such solutions with M = S 5 that preserve N = 4, 2, 1, 0 supersymmetries. Via the AdS/CFT correspondence, these solutions are conjectured to describe new strongly coupled three-dimensional CFT's on a localised interface of SYM. We discuss the existence of flat deformations in the gravity side dual to marginal deformations of the conjectured S-fold CFT's. From a geometrical perspective, the flat deformations induce a monodromy ℎ on M and replace S 1 × M by the so-called mapping torus 𝑇 (M) ℎ . Interestingly, the flat deformations provide a controlled mechanism of supersymmetry breaking for N ≥ 2 S-folds. We present a class of such non-supersymmetric S-folds obtained by flat-deforming the N = 4 S-fold and discuss their (non-)perturbative stability.

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Section: N = 2 and Su(2) × U(1) Symmetric S-foldmentioning

confidence: 99%

Section: Flat Deformations Of Type Iib S-folds: Four-dimensional Picturementioning

confidence: 99%

Section: Flat Deformations Of Type Iib S-folds: Four-dimensional Picturementioning

confidence: 99%

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Type IIB S-folds: flat deformations, holography and stability

Guarino¹,

Sterckx²

2022

Preprint

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“…In this manner, the ϕ parameter was identified with a marginal deformation specifying a direction in a conformal manifold of N = 2 S-fold CFT's [26,27]. The apparent non-compactness of the parameter ϕ, at least in the four-dimensional effective description, has been the subject of recent studies and puzzles [26,28]. Working out its uplift to ten dimensions could shed some new light on this question.…”

Section: Adolfo Guarinomentioning

confidence: 99%

“…where V 0 denotes the coset element at the undeformed S-fold AdS 4 vacuum and V χ denotes the non-compact E 7 (7) transformation induced by the constant flat deformation χ . We see from (28) that the undeformed S-fold V 0 can be thought of as a seed solution from which we can generate a larger class of solutions upon acting with V χ . However, this is not the end of the story.…”

Section: Pos(corfu2021)163mentioning

confidence: 99%

Type IIB S-folds: flat deformations, holography and stability

Guarino¹,

Sterckx²

2022

Proceedings of Corfu Summer Institute 2021 "School and Workshops on Elementary Particle Physics and Gravity" — PoS(CORFU2021)

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We review recent progress in the study of S-folds in light of the gauge/gravity duality and the AdS swampland conjecture. S-folds correspond to non-geometric backgrounds of type IIB supergravity of the form AdS 4 × S 1 × M that involve a non-trivial SL(2, Z) (S-duality) monodromy for the type IIB fields when moving around the S 1 . We present four such solutions with M = S 5 that preserve N = 4, 2, 1, 0 supersymmetries. Via the AdS/CFT correspondence, these solutions are conjectured to describe new strongly coupled three-dimensional CFT's on a localised interface of SYM. We discuss the existence of flat deformations in the gravity side dual to marginal deformations of the conjectured S-fold CFT's. From a geometrical perspective, the flat deformations induce a monodromy h on M and replace S 1 × M by the so-called mapping torus T (M) h . Interestingly, the flat deformations provide a controlled mechanism of supersymmetry breaking for N ≥ 2 S-folds. We present a class of such non-supersymmetric S-folds obtained by flat-deforming the N = 4 S-fold and discuss their (non-)perturbative stability.

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New supersymmetric string theories from discrete theta angles

Montero

Freitas

2023

J. High Energ. Phys.

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We describe three previously unnoticed components of the moduli space of minimally supersymmetric string theories in d ≥ 7, describing in some detail their spectrum and duality properties. We find a new component in nine and eight dimensions, and two additional ones in seven dimensions. These theories were originally discovered in a bottom-up classification of possible F/M-theory singularity freezing patterns in the K3 lattice, described in a companion paper. The 9d/8d component can be understood as F/M-theory on a twisted fibration of the Klein bottle over a circle, while the new seven-dimensional components are described as IIB on Bieberbach manifolds with a duality bundle and RR-NSNS backgrounds turned on. All the new components can be obtained from previously known theories by turning on certain discrete theta angles; however, the spectrum of massive objects is very different, and most strikingly, they feature an incomplete lattice of BPS strings, showing that string BPS completeness is not true in general even with sixteen supercharges. In all cases we find non-BPS representatives for each value of the charge, so the Completeness Principle is satisfied. We also analyze analogous theta angles in nonsupersymmetric string theories, and provide a detailed explanation of why the Type I discrete θ angle proposed in 1304.1551 is unphysical, using this to clarify certain non-perturbative phenomena in O8 planes.

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The spectrum of marginally-deformed $$ \mathcal{N} $$ = 2 CFTs with AdS4 S-fold duals of type IIB

Cited by 19 publications

References 51 publications

Type IIB S-folds: flat deformations, holography and stability

Type IIB S-folds: flat deformations, holography and stability

Type IIB S-folds: flat deformations, holography and stability

New supersymmetric string theories from discrete theta angles

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