<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>N</mml:mi><mml:mo>=</mml:mo><mml:mn>1</mml:mn><mml:mn /></mml:math>Supergravity with Nonminimal Coupling: A Class of Models

Chang, Ngee-Pong; Ouvry, Stéphane; Wu, Xizeng

doi:10.1103/physrevlett.51.327

Cited by 50 publications

(13 citation statements)

References 8 publications

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“…They in particular provide new mechanisms for suppressing corrections to scalar potentials, which lie at the root of the special properties satisfied by 'no-scale' supergravity models. [15][16][17][18][19] We show how these mechanisms arise in the low-energy limit of explicit higher-dimensional supergravity and string compactifications, illustrating their generic nature by using examples taken from type IIA, IIB and heterotic supergravity.…”

Section: Introductionmentioning

confidence: 93%

UV Shadows in EFTs: Accidental Symmetries, Robustness and No‐Scale Supergravity

Burgess

Cicoli

Ciupke

et al. 2020

Fortschritte der Physik

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We argue that accidental approximate scaling symmetries are robust predictions of weakly coupled string vacua, and show that their interplay with supersymmetry and other (generalised) internal symmetries underlies the ubiquitous appearance of no-scale supergravities in low-energy 4D EFTs. We identify 4 nested types of no-scale supergravities, and show how leading quantum corrections can break scale invariance while preserving some no-scale properties (including non-supersymmetric flat directions). We use these ideas to classify corrections to the low-energy 4D supergravity action in perturbative 10D string vacua, including both bulk and brane contributions. Our prediction for the Kähler potential at any fixed order in ′ and string loops agrees with all extant calculations. p-form fields play two important roles: they spawn many (generalised) shift symmetries; and space-filling 4-forms teach 4D physics about higher-dimensional phenomena like flux quantisation. We argue that these robust symmetry arguments suffice to understand obstructions to finding classical de Sitter vacua, and suggest how to get around them in UV complete models.

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Section: Introductionmentioning

confidence: 93%

UV Shadows in EFTs: Accidental Symmetries, Robustness and No‐Scale Supergravity

Burgess

Cicoli

Ciupke

et al. 2020

Fortschritte der Physik

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“…We collect here some useful formulae for the Kähler manifold SO(2, 2) SO(2) × SO (2) ≃ SU(1, 1) U(1) 2 .…”

Section: Appendixmentioning

confidence: 99%

Higgs and super-Higgs effects with naturally vanishing classical vacuum energy

1995

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We construct N = 1 supergravity models where the gauge symmetry and supersymmetry are both spontaneously broken, with naturally vanishing classical vacuum energy and unsuppressed Goldstino components along gauge non-singlet directions. We discuss some physically interesting situations where such a mechanism could play a role, and identify the breaking of a grand-unified gauge group as the most likely possibility. We show that, even when the gravitino mass is much smaller than the scale m X of gauge symmetry breaking, important features can be missed if we first naively integrate out the degrees of freedom of mass O(m X ), in the limit of unbroken supersymmetry, and then describe the super-Higgs effect in the resulting effective theory. We also comment on possible connections with extended supergravities and realistic four-dimensional string constructions.

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“…(2.1) and (2.2) is of a n e s c a l e type [2]. Physically, this means t h a t there are fewer constraints a t the lninimum of the tree potential t h a n there are fields and thus t h e vacuum is degenerate.…”

Section: T H E Modelmentioning

confidence: 99%

“…The first such model was constructed by Witten [l] and it was of a no-scale type [2]. Supersym-~n e t r y (SUSY) breaking was introduced in Ref.…”

Section: Introductionmentioning

confidence: 99%

String-inspired supergravity model at one loop

1992

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We study a prototype supergravity model from superstrings, with three generations of matter fields in the untwisted sector, nonperturbatively induced supersymmetry breaking and including threshold corrections in conformity with modular invariance. The scale degeneracy of the vacuum is lifted at the one-loop level, allowing a determination of the fundamental parameters of the effective low-energy theory. PACS number(s): 12.10.Gq, 04.50.+h, 04.65.+e

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N=1Supergravity with Nonminimal Coupling: A Class of Models

Cited by 50 publications

References 8 publications

UV Shadows in EFTs: Accidental Symmetries, Robustness and No‐Scale Supergravity

UV Shadows in EFTs: Accidental Symmetries, Robustness and No‐Scale Supergravity

Higgs and super-Higgs effects with naturally vanishing classical vacuum energy

String-inspired supergravity model at one loop

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