Showing 2000 · hep-phShow all

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hep-ph2000

Gravitino production during preheating and the equivalence theorem

A. L. Maroto, J. R. Pelaez

We review our results on the calculation of helicity 1/2 gravitino production during preheating. The method we present is based on the equivalence between goldstinos and longitudin…

hep-ph2000

Chiral Perturbation Theory and Unitarization

E. Ruiz Arriola, A. Gómez Nicola, J. Nieves +1

We review our recent work on unitarization and chiral perturbation theory both in the and the sectors. We pay particular attention to the Bethe-Salpeter and Inverse Ampli…

hep-ph2000★ 39 cited

Primordial magnetic fields from metric perturbations

Antonio L. Maroto

We study the amplification of electromagnetic vacuum fluctuations induced by the evolution of scalar metric perturbations at the end of inflation. Such perturbations break the conf…

hep-ph2000★ 84 cited

The dynamics of the Goldstone bosons on the brane

Antonio Dobado, Antonio L. Maroto

We study, within the recently proposed brane-world scenario, the effective action for the low-energy brane excitations. These modes are understood as Goldstone bosons associated to…

hep-ph2000★ 28 cited

Improved Unitarized Heavy Baryon Chiral Perturbation Theory for Scattering

A. Gómez Nicola, J. Nieves, J. R. Peláez +1

We show how the unitarized description of pion nucleon scattering within Heavy Baryon Chiral Perturbation Theory can be considerably improved, by a suitable reordering of the expan…

hep-ph2000★ 21 cited

The Lame equation in parametric resonance after inflation

F. Finkel, A. Gonzalez-Lopez, A. L. Maroto +1

We show that the most general inflaton potential in Minkowski spacetime for which the differential equation for the Fourier modes of the matter fields reduces to Lamé's equation is…

hep-ph2000★ 58 cited

The Higgs sector of the MSSM in the decoupling limit

Antonio Dobado, Maria J. Herrero, Siannah Penaranda

We study the heavy Higgs sector of the MSSM composed of the H^\pm, H^0 and A^0 particles in the so-called decoupling limit where m_{A^0} >> m_Z. By integrating out these heavy Higg…