The unbearable lightness of charged gravitini

Dall'Agata, Gianguido; Emelin, Maxim; Farakos, Fotis; Morittu, Matteo

doi:10.48550/arxiv.2108.04254

Cited by 7 publications

(34 citation statements)

References 48 publications

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“…While the argument above requires an abelian gauge group on the vacuum, we can argue that also a non-abelian gauge group would lead to the same conclusion, in a similar fashion to [20]. In fact, gauged extended supergravities contain the would-be goldstones of the non-abelian gauge symmetries and one could apply the argument above by looking at points in field space that are infinitesimallly close to the vacuum, but where the gauge group is broken to a subgroup containing an abelian factor.…”

Section: The Argumentmentioning

confidence: 78%

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Weak gravity versus scale separation

Cribiori,

Dall'Agata

2022

Preprint

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We give evidence that fully supersymmetric Anti-de Sitter vacua of extended supergravity with a residual gauge group containing an abelian factor cannot be scale separated as a consequence of the weak gravity conjecture. We prove this for N = 2 and N = 8 supergravity and we explain how our argument applies also to vacua with partially broken, but extended residual supersymmetry. We finally discuss possible loopholes and especially how certain N = 1 models can evade our reasoning. Our results suggest that N = 0, 1 supersymmetry at the lagrangian level might be the most promising chances to obtain a truly four-dimensional effective description of quantum gravity.

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Section: The Argumentmentioning

confidence: 78%

“…Our methodology is analogous to the one employed in [19,20] to exclude de Sitter vacua in extended supergravity. This suggests that difficulties in constructing de Sitter vacua are somehow related to difficulties in obtain scale separation (see [21] for a similar reasoning from a different perspective).…”

Section: Introductionmentioning

confidence: 99%

Weak gravity versus scale separation

Cribiori,

Dall'Agata

2022

Preprint

Self Cite

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“…As detailed in Footnote 7 of [8], (meta-) stable de Sitter solutions in 4d gauged supergravities with extended supersymmetries typically require non-compact gaugings (which would correspond to non-compact extra dimensions) or non-geometric fluxes (whose stringy origin is not in a standard classical compactification). More examples and arguments were provided recently in [46,47], beyond the (meta-) stable case. These observations on 4d gauged supergravities are consistent with our claims, thanks to the consistent truncation allowed by our solution ansatz.…”

Section: Conjecture 4 Impliesmentioning

confidence: 99%

Charting the landscape of (anti-) de Sitter and Minkowski solutions of 10d supergravities

Andriot,

Horer,

Marconnet

2022

Preprint

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We classify solutions of 10d type IIA/B supergravities with orientifolds, on a 4d maximally symmetric spacetime times a 6d group manifold. We then look for new solutions in previously unexplored solution classes, and find some: (anti-) de Sitter solutions with intersecting O 4 , O 6 and D 6 , or Minkowski solutions with 3 intersecting O 5 , among others. We provide the numerical code that we developed for this purpose. We also prove new no-go theorems against (anti-) de Sitter solutions. We finally conjecture the absence of de Sitter solution for 2 or less intersecting source sets, implying that a 4d effective theory with de Sitter is at most N = 1 supersymmetric.

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“…This gravitino distance conjecture is identical to the AdS conjecture in (supersymmetric) AdS space with δ = 2α, but it applies also to Minkowski and dS spaces (see also [57,58] for related works on vanishing gravitino masses and dS critical points). In four dimensions one obtains a lower bound based on the supergravity EFT δ ≥ 1/3 [56], corresponding to α ≥ 1/6, in agreement with the holographic bounds above (see eq.…”

Section: /4mentioning

confidence: 68%

IR/UV Mixing, Towers of Species and Swampland Conjectures

Castellano,

Herráez,

Ibáñez

2021

Preprint

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By applying the Covariant Entropy Bound (CEB) to an EFT in a box of size 1/Λ IR one obtains that the UV and IR cut-offs of the EFT are necessarily correlated. We argue that in a theory of Quantum Gravity (QG) one should identify the UV cutoff with the 'species scale', and give a general algorithm to calculate it in the case of multiple towers becoming light. One then obtains an upper bound on the characteristic mass scale of the tower in terms of the IR cut-off, given byPlanck units, with α D = (D − 2 + p)/2p(D − 1), where p depends on the density of states. Identifying the IR cut-off with a (non-vanishing) curvature in AdS one reproduces the statement of the AdS Distance Conjecture (ADC), also giving an explicit lower bound for the α exponent.In particular, we find that the CEB implies α ≥ 1/2 in any dimension if there is a single KK tower, both in AdS and dS vacua. However values α < 1/2 are allowed if the particle tower is multiple or has a string component. We also consider the CKN constraint coming from avoiding gravitational collapse which further requires in general α ≥ 1/D for the lightest tower. We analyse the case of the DGKT-CFI class of Type IIA orientifold models and show it has both particle and string towers below the species scale, so that a careful analysis of how the ADC is defined is needed.We find that this class of models obey but do not saturate the CEB. The UV/IR constraints found apply to both AdS and dS vacua. We comment on possible applications of these ideas to the dS Swampland conjecture as well as to the observed dS phase of the universe.

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The unbearable lightness of charged gravitini

Cited by 7 publications

References 48 publications

Weak gravity versus scale separation

Weak gravity versus scale separation

Charting the landscape of (anti-) de Sitter and Minkowski solutions of 10d supergravities

IR/UV Mixing, Towers of Species and Swampland Conjectures

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