On quadratic divergences in supergravity, vacuum energy and the supersymmetric flavor problem

Gaillard, Mary K.; Nelson, Brent D.

doi:10.1016/j.nuclphysb.2006.05.035

Cited by 15 publications

(28 citation statements)

References 64 publications

(166 reference statements)

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“…4 These couplings are consistent with the selection rules [10]. They are further restricted by additional selection rules and gauge invariance.…”

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confidence: 71%

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RParity from the Heterotic String

Gaillard

2005

Phys. Rev. Lett.

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“…4 These couplings are consistent with the selection rules [10]. They are further restricted by additional selection rules and gauge invariance.…”

supporting

confidence: 71%

“…2 The effects of quadratically divergent loop corrections [3] will be examined elsewhere [4]. 3 We neglect mixing [6] among twisted sector fields of the same modular weights q A I with mixing parameters that depend on the integers a I , b…”

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confidence: 99%

RParity from the Heterotic String

Gaillard

2005

Phys. Rev. Lett.

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“…The other half, i.e., of types m 2 qq and m 2 q q , can be derived in a similar way. [It is perhaps more convenient to differentiate the potential in the form (13).] One finds that at the origin of field space h@ K @ L Vi hK I J W KLI W J i; (A5) which is exactly the expression for the rigid case, since all second derivatives of the superpotential vanish for zero background fields.…”

Section: Appendix A: Useful Mass Matrix Formulasmentioning

confidence: 99%

Metastable supersymmetry breaking and supergravity at finite temperature

2008

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We study how coupling to supergravity affects the phase structure of a system exhibiting dynamical supersymmetry breaking in a meta-stable vacuum. More precisely, we consider the Seiberg dual of SQCD coupled to supergravity at finite temperature. We show that the gravitational interactions decrease the critical temperature for the second order phase transition in the quark direction, that is also present in the global case. Furthermore, we find that, due to supergravity, a new second order phase transition occurs in the meson direction, whenever there is a nonvanishing constant term in the superpotential. Notably, this phase transition is a necessary condition for the fields to roll, as the system cools down, towards the metastable susy breaking vacuum, because of the supergravity-induced shift of the meta-stable minimum away from zero meson vevs. Finally, we comment on the phase structure of the KKLT model with uplifting sector given by the Seiberg dual of SQCD.

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“…This is not impossible, but we argue that such corrections are generally insufficient to rectify the problem, and may even make it worse. 48 …”

Section: 38mentioning

confidence: 99%

Kähler Stabilized, Modular Invariant Heterotic String Models

Gaillard

Nelson

2007

Int. J. Mod. Phys. A

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We review the theory and phenomenology of effective supergravity theories based on orbifold compactifications of the weakly-coupled heterotic string. In particular, we consider theories in which the four-dimensional theory displays target space modular invariance and where the dilatonic mode undergoes Kähler stabilization. A self-contained exposition of effective Lagrangian approaches to gaugino condensation and heterotic string theory is presented, leading to the development of the models of Binétruy, Gaillard and Wu. Various aspects of the phenomenology of this class of models are considered. These include issues of supersymmetry breaking and superpartner spectra, the role of anomalous U (1) factors, issues of flavor and R-parity conservation, collider signatures, axion physics, and early universe cosmology. For the vast majority of phenomenological considerations the theories reviewed here compare quite favorably to other string-derived models in the literature. Theoretical objections to the framework and directions for further research are identified and discussed.

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On quadratic divergences in supergravity, vacuum energy and the supersymmetric flavor problem

Cited by 15 publications

References 64 publications

RParity from the Heterotic String

RParity from the Heterotic String

Metastable supersymmetry breaking and supergravity at finite temperature

Kähler Stabilized, Modular Invariant Heterotic String Models

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