Effective Theory of Warped Compactifications and the Implications for KKLT

Lüst, Severin; Randall, Lisa

doi:10.1002/prop.202200103

Cited by 23 publications

(23 citation statements)

References 127 publications

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“…The number of fluxes one can use is expected to be bound from above by tadpole cancellation conditions, 5 the genuine quantum gravity constraints in string theory. Moreover, as shown [21] the minimum should not move too far away from its initial position. This suggests that in quantum gravity the actual tuning one is allowed to do in a controllable manner is limited.…”

Section: Realization In a Warped Throatmentioning

confidence: 94%

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The Dark Dimension in a Warped Throat

Blumenhagen,

Brinkmann,

Makridou

2022

Preprint

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By combining swampland conjectures with observational data, it was suggested that our universe should lie in an asymptotic region of the quantum gravity landscape. The generalized distance conjecture for dS, the smallness of the cosmological constant and astrophysical constraints led to a scenario with one mesoscopic large dimension of size ℓ ∼ Λ −1/4 ∼ 10 −6 m. We point out that a strongly warped throat with its redshifted KK tower provides a natural string theoretic mechanism that realizes the scaling m ∼ Λ α with the factor α = 1/4, the dark dimension being the one along the throat. The example of an uplifted large volume scenario indicates that in string theory it could be challenging to keep other KK towers heavy enough to avoid a conflict with astrophysical constraints on the number of extra large dimensions.

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Section: Realization In a Warped Throatmentioning

confidence: 94%

“…It was shown in[21] that this Kähler potential receives corrections when going off-shell. Note that here we are only interested in the behavior close to the minimum.…”

mentioning

confidence: 99%

The Dark Dimension in a Warped Throat

Blumenhagen,

Brinkmann,

Makridou

2022

Preprint

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“…Another issue is that in case one removes the D3 brane contribution by taking M → 0, SUSY is restored and one obtains a pure AdS state. This corresponds to the first step of the KKLT uplifting method, which is argued to be ruled out with a holography argument in a recent study [49].…”

Section: Bilinear Nilpotent Correctionsmentioning

confidence: 90%

“…* In a recent study of holography and the KKLT scenario[49], it has been argued that the construction of a supersymmetric anti-dS (AdS) vacuum as in the first step of the KKLT is beyond the validity of the EFT.…”

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confidence: 99%

(Super)Universal Attractors and the de Sitter Vacua in String Landscape

Guleryuz¹

2022

Preprint

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In this work, we present an effective field theory for string inflation with spontaneously broken supersymmetry without generating any supersymmetric anti-de Sitter vacua. In that regard, we analyze the nilpotent superfields that effectively capture the physics of anti-D3 branes, and obtain the underlying pattern of universal attractors with a single parameter. Accordingly, we reveal a novel uplifting method by adding the same parameter as a complex contribution parallel to the decomposition of a superfield. Following that, we obtain an almost vanishing cosmological constant in a region where the inflationary attractors unify. Finally, we show that the introduction of nilpotent superfields drastically extends the string landscape for the de Sitter (swampland) conjecture, and the (super)universal attractors are in the string landscape in that respect.

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“…While the leading-order KPV analysis suggests g s M 2 > 12, it has been proposed that avoiding a conifold instability for an anti-brane in the Klebanov-Strassler throat requires g s M 2 > 46 [10][11][12][13]. Recently, the existence of this instability has been questioned [14]. However, in light of our results it appears that the curvature-corrected KPV stability bound is much stronger than previously thought, possibly dominating any potential conifold instability issue.…”

Section: Introductionmentioning

confidence: 99%

Curvature corrections to KPV: Do we need deep throats?

Hebecker¹,

Simon²,

Venken³

2022

Preprint

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We consider α 2 curvature corrections to the action of an NS5-brane which plays the key role in the metastability analysis of warped anti-D3-brane uplifts by Kachru, Pearson and Verlinde (KPV). Such corrections can dramatically alter the KPV analysis. We find that for the α 2 -corrections to be sufficiently small to recover essentially the leading-order KPV potential one needs a surprisingly large S 3 radius, corresponding to g s M > 20. In the context of the Large Volume Scenario (LVS) this implies a D3-tadpole of at least O(10 3 −10 4 ). However, large α 2 -corrections do not necessarily spoil the uplift in KPV. Rather, as the curvature corrections lower the tension of the brane, a novel uplifting mechanism suggests itself where the smallness of the uplift is achieved by a tuning of curvature corrections. A key underlying assumption is the existence of a dense discretuum of g s . This new mechanism does not require a deep warped throat, thereby sidestepping the main difficulty in uplifting KKLT and LVS. However, all of the above has to be treated as a preliminary exploration of possibilities since, at the moment, not all relevant correction at the order α 2 are known.

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Effective Theory of Warped Compactifications and the Implications for KKLT

Cited by 23 publications

References 127 publications

The Dark Dimension in a Warped Throat

The Dark Dimension in a Warped Throat

(Super)Universal Attractors and the de Sitter Vacua in String Landscape

Curvature corrections to KPV: Do we need deep throats?

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