Zobrazeno 1 - 10
of 1 120
pro vyhledávání: '"Pedro, Francisco"'
In this paper we study higher-derivative supersymmetric effective field theories focusing on the systematic procedure for the elimination of ghosts from the spectrum. Particular attention is paid to the auxiliary fields, for which the higher-derivati
Externí odkaz:
http://arxiv.org/abs/2409.08984
We present a type IIB 4D string model with stabilised moduli which is able to describe the history of the universe from inflation to quintessence. The underlying Calabi-Yau volume is controlled by two moduli which are stabilised by perturbative effec
Externí odkaz:
http://arxiv.org/abs/2407.03405
We examine the descent via membrane nucleation through a landscape of vacua where the cosmological constant is given by a combination of four-form fluxes. It has been shown that this descent can be slowed exponentially for very low curvature vacua cl
Externí odkaz:
http://arxiv.org/abs/2404.02961
Autor:
Casadio, Roberto, Chataignier, Leonardo, Kamenshchik, Alexander Yu., Pedro, Francisco G., Tronconi, Alessandro, Venturi, Giovanni
Publikováno v:
Annals of Physics 470, 169783 (2024)
We make a conceptual overview of a particular approach to the initial-value problem in canonical gauge theories. We stress how the first-class phase-space constraints may be relaxed if we interpret them as fixing the values of new degrees of freedom.
Externí odkaz:
http://arxiv.org/abs/2402.12437
We consider a wide class of four-dimensional effective field theories in which gravity is coupled to multiple four-forms and their dual scalar fields, with membrane sources charged under the corresponding three-form potentials. Four-form flux, quanti
Externí odkaz:
http://arxiv.org/abs/2303.17723
Autor:
Cicoli, Michele, Licheri, Matteo, Mahanta, Ratul, McDonough, Evan, Pedro, Francisco G., Scalisi, Marco
Early Dark Energy (EDE) is a promising model to resolve the Hubble Tension, that, informed by Cosmic Microwave Background data, features a generalization of the potential energy usually associated with axion-like particles. We develop realizations of
Externí odkaz:
http://arxiv.org/abs/2303.03414
We consider quintessence models within 4D effective descriptions of gravity coupled to two scalar fields. These theories are known to give rise to viable models of late-time cosmic acceleration without any need for flat potentials, and so they are po
Externí odkaz:
http://arxiv.org/abs/2206.10649
We derive the spectrum and analyse the detectability prospects of secondary gravity waves (GWs) associated to primordial black hole (PBH) production in a class of string inflationary models called Fibre Inflation. The inflationary potential features
Externí odkaz:
http://arxiv.org/abs/2203.00021