ar X iv : h ep - p h / 99 02 47 7 v 1 2 6 Fe b 19 99 A Next - to - Minimal model of Hybrid Inflation in Effective Supergravity

ar X iv : h ep - p h / 06 02 19 2 v 1 2 1 Fe b 20 06 UT - 06 - 01 Minimal Supergravity , Inflation , and All That

We consider an inflationary model in the hidden-sector broken supergravity with an effectively large cutoff. The inflaton decay into right-handed neutrinos naturally causes the observed baryon asymmetry of the universe with a reheating temperature low enough to avoid the gravitino overproduction. We emphasize that all the phenomenological requirements from cosmology and particle physics are sat...

ar X iv : h ep - t h / 99 02 18 4 v 1 2 5 Fe b 19 99 QUANTUM COSMOLOGY FROM N = 4 SUPER YANG - MILLS THEORY

We consider quantum N = 4 super Yang-Mills theory interacting in a covariant way with N = 4 conformal supergravity. The induced large N effective action for such a theory is calculated on a dilaton-gravitational background using the conformal anomaly found via AdS/CFT correspondence. Considering such an effective action as a quantum correction to the classical gravity action we study quantum co...

ar X iv : h ep - p h / 99 06 38 8 v 1 1 6 Ju n 19 99 Gravitino production during preheating ∗ Antonio

We study the production of gravitinos during the preheating era after inflation by means of the non-perturbative Bogolyubov technique. Considering only the helicity ±3/2 states, the problem is reduced to the simpler Dirac fermions case. We calculate the production in a particular supergravity model in an expanding universe and obtain the spectrum and number density. Finally we compare the resul...

ar X iv : h ep - t h / 99 02 15 1 v 1 2 2 Fe b 19 99 Form Factors in Off – Critical Superconformal Models

We discuss the determination of the lowest Form Factors relative to the trace operators of N = 1 Super Sinh-Gordon Model. Analytic continuations of these Form Factors as functions of the coupling constant allows us to study a series of models in a uniform way, among these the latest model of the Roaming Series and a class of minimal supersymmetric models.

ar X iv : a st ro - p h / 99 02 23 4 v 2 1 7 Fe b 19 99 OB ASSOCIATIONS