Metastable supersymmetry breaking and supergravity at finite temperature

Anguelova, Lilia; Thomas, Steven; Ricci, Riccardo

doi:10.1103/physrevd.77.025036

Cited by 16 publications

(34 citation statements)

References 59 publications

(193 reference statements)

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“…This means that all the eigenvalues are positive above the critical temperature, while below Θ c , tachyonic directions appear in the potential towards the would-be metastable vacua. From (4.2), we get 3) which is in agreement with the critical temperature derived in [16] in the rigid limit.…”

Section: Critical Temperaturesupporting

confidence: 86%

“…However, as pointed out in [16], this is not as straightforward once one includes supergravity. Consider for instance the cross term K T T K T W 2 ∂ T W 1 in the supergravity potential (3.2).…”

Section: Supergravity and Finite Temperature Corrections At The Originmentioning

confidence: 99%

“…Indeed, even though the corrections to the potential are negligible, supergravity effects could have a non-trivial impact on its derivatives and one typically has to take them into account. However, in the case of the critical temperature, and motivated by the results of [16], even if the exact location of the origin may vary with temperature and supergravity, the moment when the curvature of the potential at the origin becomes negative should not be drastically affected by supergravity effects. This, obviously, assumes that the origin is indeed a minimum at high temperature, as we will show in Section 5.…”

Section: Critical Temperaturementioning

confidence: 99%

“…In [14], it was assumed that the fields start in the supersymmetric phase. Instead, the authors of [15,16] assumed the starting point to be the origin of the field space, which is a minimum at high temperature 3 . This is because the origin of the field space contains the highest number of light degrees of freedom and hence maximises the entropy.…”

Section: Introductionmentioning

confidence: 99%

“…In this paper, we complete the study done in [16]. We work out the complete phase structure of the ISS-KKLT model.…”

Section: Introductionmentioning

confidence: 99%

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Finite temperature behaviour of the ISS-uplifted KKLT model

Papineau

2008

J. High Energy Phys.

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We study the static phase structure of the ISS-KKLT model for moduli stabilisation and uplifting to a zero cosmological constant. Since the supersymmetry breaking sector and the moduli sector are only gravitationally coupled, we expect negligible quantum effects of the modulus upon the ISS sector, and the other way around. Under this assumption, we show that the ISS fields end up in the metastable vacua. The reason is not only that it is thermally favoured (second order phase transition) compared to the phase transition towards the supersymmetric vacua, but rather that the metastable vacua form before the supersymmetric ones. This nice feature is exclusively due to the presence of the KKLT sector. We also show that supergravity effects are negligible around the origin of the field space. Finally, we turn to the modulus sector and show that there is no destabilisation effect coming from the ISS sector.0

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Section: Critical Temperaturesupporting

confidence: 86%

Section: Supergravity and Finite Temperature Corrections At The Originmentioning

confidence: 99%

Section: Critical Temperaturementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…In this paper, we complete the study done in [16]. We work out the complete phase structure of the ISS-KKLT model.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Finite temperature behaviour of the ISS-uplifted KKLT model

Papineau

2008

J. High Energy Phys.

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Finite temperature behaviour of O'KKLT model

Anguelova

Calò

2008

Fortschritte der Physik

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We summarize our work on the O'Raifeartaigh uplifted KKLT model at finite temperature. We study the system for parameter values for which the zero temperature potential for the volume modulus has a dS minimum. The temperature-dependent part of the effective potential has a runaway behaviour for one exponent in the superpotential, whereas it can have local minima at finite field vevs for two exponents in the superpotential. However, it turns out that, despite the presence of those minima, the zero temperature dS vacuum is not destabilized by thermal corrections within the whole range of validity of our approximations.

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String loop moduli stabilisation and cosmology in IIB flux compactifications

Cicoli¹

2010

Fortschritte der Physik

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We present a detailed review of the moduli stabilisation mechanism and possible cosmological implications of the LARGE Volume Scenario (LVS) that emerges naturally in the context of type IIB Calabi‐Yau flux compactifications. After a quick overview of physics beyond the Standard Model, we present string theory as the most promising candidate for a consistent theory of quantum gravity. We then give a pedagogical introduction to type IIB compactifications on Calabi‐Yau orientifolds where most of the moduli are stabilised by turning on background fluxes. However in order to fix the Kähler moduli one needs to consider several corrections beyond the leading order approximations. After presenting a survey of all the existing solutions to this problem, we derive the topological conditions on an arbitrary Calabi‐Yau to obtain the LVS since it requires no fine‐tuning of the fluxes and provides a natural solution of the hierarchy problem. After performing a systematic study of the behaviour of string loop corrections for general type IIB compactifications, we show how they play a crucial rôle to achieve full Kähler moduli stabilisation in the LVS. Before examining the possible cosmological implication of these scenarios, we present a broad overview of string cosmology. We then notice how, in the case of K3‐fibrations, string loop corrections give rise naturally to an inflationary model which yields observable gravity waves. We finally study the finite‐temperature behaviour of the LVS and discuss prospects for future work.

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Metastable supersymmetry breaking and supergravity at finite temperature

Cited by 16 publications

References 59 publications

Finite temperature behaviour of the ISS-uplifted KKLT model

Finite temperature behaviour of the ISS-uplifted KKLT model

Finite temperature behaviour of O'KKLT model

String loop moduli stabilisation and cosmology in IIB flux compactifications

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