Quantum log-corrections to swampland conjectures

Blumenhagen, Ralph; Brinkmann, Max; Makridou, Andriana

doi:10.1007/jhep02(2020)064

Cited by 60 publications

(68 citation statements)

References 59 publications

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“…Let us observe that this first model serves to illustrate how the 10d solution changes the purely 4d picture in an interesting way, providing an exact flux cancellation in the relevant ratio of scales. However, we must remark, as noticed also in [17], that the is a 10d lift satisfying the general conditions spelled out in [27]. A 10d solution would presumably lead to a result for M KK compatible with M mod up to numerical factors.…”

Section: Example 1 M =mentioning

confidence: 57%

“…This behavior is universal in this class of models and the only model dependence is in the numerical constant c. In this sense the behavior is like the one of the Breitenlohner-Freedman bound, which is also universal [26]. Another interesting property, already noticed in [17], is that with respect to the cosmological constant, the moduli masses behave exactly like M KK , up to numerical factors. Thus, in AdS vacua, the ratio M 2 mod /|Λ| determined from the effective potential gives us automatically the ratio M 2 KK /|Λ| in the theory, without the need of an explicit computation.…”

Section: Final Commentsmentioning

confidence: 57%

“…These conjectures have been tested in many string theory examples. However there is a class of type IIA 4d orientifolds [10][11][12][13][14][15], which appear to violate both [9,16,17]. In particular there are certain examples with non-vanishing Romans mass which seem to yield theories in which the AdS and KK scales can be parametrically separated [11,12].…”

Section: Introductionmentioning

confidence: 99%

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On scale separation in type II AdS flux vacua

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Herráez

Ibáñez

2020

J. High Energ. Phys.

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We study the separation of AdS and Kaluza-Klein (KK) scales in type II 4d AdS orientifold vacua. We first address this problem in toroidal/orbifold type IIA vacua with metric fluxes, corresponding to compactifications in twisted tori, both from the 4d and 10d points of view. We show how the naive application of the effective 4d theory leads to results which violate the AdS distance conjecture, in a class of N = 1 supersymmetric models which have a 10d lifting to a compactification on S 3 × S 3 .We show how using KK scales properly modified by the compact metric leads to no separation of scales with M 2 KK = c|Λ|, with c a numerical constant independent of fluxes. This applies with no need to keep non-leading fluxes fixed. We also consider a class of IIB models with non-geometric fluxes in which the effective field theory analysis seems to lead to a naive separation of scales and a violation of the AdS distance conjecture. It has a T-dual which again may be understood as a 10d type IIA theory compactified on S 3 × S 3 . In this geometric dual one again observes that the strong AdS distance conjecture is obeyed with M 2 KK = c ′ |Λ|, if one takes into account the curvature in the internal space. These findings seem to suggest that all toroidal/orbifold models with fluxes in this class obey M 2 KK = c|Λ| with c a fluxindependent numerical constant.

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Section: Example 1 M =mentioning

confidence: 57%

Section: Final Commentsmentioning

confidence: 57%

Section: Introductionmentioning

confidence: 99%

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On scale separation in type II AdS flux vacua

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Herráez

Ibáñez

2020

J. High Energ. Phys.

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“…Recently, there has been a renewed interest in the question whether string theory admits AdS solutions with scale separation (see, e.g., [15,13,32,33]). In [13], it was conjectured that AdS vacua in the limit Λ → 0 satisfy M ∼ |Λ| α (6.1)…”

Section: Review Of Previous Workmentioning

confidence: 99%

O‐Plane Backreaction and Scale Separation in Type IIA Flux Vacua

Junghans

2020

Fortschritte der Physik

143

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We construct AdS 4 flux vacua of type IIA string theory in the supergravity (large volume, small g s ) regime, including the backreaction of O6-planes. Our solutions are the localized versions of the smeared solutions on Calabi-Yau orientifolds studied by DeWolfe, Giryavets, Kachru and Taylor and in other works. We find that the O-plane backreaction in these solutions generates warping, a varying dilaton, non-closed RR field strengths and internal curvature. Just like their smeared counterparts, the localized solutions admit stabilized moduli, a parametric control over string corrections and a parametric separation between the AdS and KK scales. Our explicit expressions furthermore make precise the common lore that smeared solutions should approximate the exact ones in the large-volume, small-g s limit. Finally, our solutions appear to violate a recent swampland conjecture about an absence of scale separation in supersymmetric AdS vacua. We make a simple observation explaining why this happens in these solutions in contrast to most other AdS solutions in string theory.

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“…In the literature there is currently a lot of activity regarding the implications of the Swampland criteria, see Refs. [40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56][57][58][61][62][63][64][65][66][67][68][69][70][71]. Also in Ref.…”

Section: The Swampland Criteria For the Gw170817-compatible Einstmentioning

confidence: 99%

Swampland implications of GW170817-compatible Einstein-Gauss-Bonnet gravity

2020

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We revisit the Einstein-Gauss-Bonnet theory in view of the GW170817 event, which compels that the gravitational wave speed is equal to c 2 T = 1 in natural units. We use an alternative approach compared to one previous work of ours, which enables us to express all the slow-roll indices and the observational indices as functions of the scalar field. Using our formalism we investigate if the Swampland criteria are satisfied for the Einstein-Gauss-Bonnet theory and as we demonstrate, the Swampland criteria are satisfied for quite general forms of the potential and the Gauss-Bonnet coupling function ξ(φ), if the slow-roll conditions are assumed to hold true.PACS numbers: 04.50. Kd, 95.36.+x, 98.80.Cq,

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Quantum log-corrections to swampland conjectures

Cited by 60 publications

References 59 publications

On scale separation in type II AdS flux vacua

On scale separation in type II AdS flux vacua

O‐Plane Backreaction and Scale Separation in Type IIA Flux Vacua

Swampland implications of GW170817-compatible Einstein-Gauss-Bonnet gravity

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