Zobrazeno 1 - 10
of 150
pro vyhledávání: '"DI MARCO, Fabrizio"'
Publikováno v:
Phys.Rev.D82:023510,2010
A nonabelian generalization of the neutral Witten current-carrying string model is discussed in which the bosonic current-carrier belongs to a two dimensional representation of SU(2). We find that the current-carrying solutions can be of three differ
Externí odkaz:
http://arxiv.org/abs/1003.4601
Autor:
Di Marco, Fabrizio, Notari, Alessio
Publikováno v:
Phys.Rev.D73:063514,2006
We show that Inflation in a False Vacuum becomes viable in the presence of a spectator scalar field non minimally coupled to gravity. The field is unstable in this background, it grows exponentially and slows down the pure de Sitter phase itself, all
Externí odkaz:
http://arxiv.org/abs/astro-ph/0511396
Autor:
Di Marco, Fabrizio, Finelli, Fabio
Publikováno v:
Phys.Rev. D71 (2005) 123502
We study the slow-roll regime of two field inflation, in which the two fields are also coupled through their kinetic terms. Such Lagrangians are motivated by particle physics and by scalar-tensor theories studied in the Einstein frame. We compute the
Externí odkaz:
http://arxiv.org/abs/astro-ph/0505198
Publikováno v:
Phys.Rev. D67 (2003) 063512
Low energy effective field theories motivated by string theory will likely contain several scalar moduli fields which will be relevant to early Universe cosmology. Some of these fields are expected to couple with non-standard kinetic terms to gravity
Externí odkaz:
http://arxiv.org/abs/astro-ph/0211276