Concept

Tachyonic field

Related publications (35)

Graviton loops and brane observables

We discuss how to consistently perform effective Lagrangian computations in quantum gravity with branes in compact extra dimensions. A reparametrization invariant and infrared finite result is obtained in a non trivial way. It is crucial to properly accoun ...

2001

The fate of the radion in models with metastable graviton

Riccardo Rattazzi

We clarify some general issues in models where gravity is localized at intermediate distances. We introduce the radion mode, which is usually neglected, and we point out that its role in the model is crucial. We show that the brane bending effects discusse ...

2000

Interaction of D-branes on orbifolds and massless particle emission

Claudio Scrucca

We discuss various D-brane configurations in 4-dimensional orbifold compactifications of type II superstring theory which are point-like 0-branes from the 4-dimensional space-time point of view. We analyze their interactions and compute the amplitude for t ...

World Scientific Publ Co Inc, 687 Hartwell St, Teaneck, Nj 07666 Usa1998

Dynamical inflation and unification scale on quantum moduli spaces

Riccardo Rattazzi

We show that simple strongly coupled supersymmetric gauge theories with quantum moduli spaces can naturally lead to hybrid inflation. These theories contain no input dimensionful or small parameters. The effective superpotential is Linear in the inflaton f ...

1997

Baryon asymmetry of the universe in the standard electroweak theory

We study the interactions of quarks and antiquarks with the changing Higgs field during the electroweak phase transition, including quantum mechanical and some thermal effects, with the only source of CP violation being the known CKM phase. We show that th ...

1994

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