Zobrazeno 1 - 10
of 4 363
pro vyhledávání: '"A. Benincasa"'
This study explores the parameter space of a minimal extension of the Standard Model with a non-abelian $SU(2)$ group, in which the gauge bosons are stable and acquire mass through a mechanism of spontaneous symmetry breaking involving a new scalar d
Externí odkaz:
http://arxiv.org/abs/2410.00501
Autor:
Benincasa, Paolo, Giroux, Mathieu, Hannesdottir, Holmfridur S., Mizera, Sebastian, Pasiecznik, Celina, Vazão, Francisco
Observables in expanding universes are crucial to understand the physics of the early universe. In these lectures, we review some recent progress in understanding their mathematical structure and extract the physics encoded in them. After discussing
Externí odkaz:
http://arxiv.org/abs/2409.14947
Autor:
Benincasa, Paolo, Brunello, Giacomo, Mandal, Manoj K., Mastrolia, Pierpaolo, Vazão, Francisco
Understanding the loop corrections to cosmological observables is of paramount importance for having control on the quantum consistency of a theory in an expanding universe as well as for phenomenological reasons. In the present work, we begin with a
Externí odkaz:
http://arxiv.org/abs/2408.16386
Autor:
Benincasa, Paolo, Vazão, Francisco
Cosmological observables in perturbation theory turn out to be plagued with infrared divergences, which represents both a conceptual and computational challenge. In this paper we present a proof of concept for a systematic procedure to remove these d
Externí odkaz:
http://arxiv.org/abs/2405.19979
Autor:
Benincasa, Paolo, Vazão, Francisco
We provide a general analysis of the asymptotic behaviour of perturbative contributions to observables in arbitrary power-law FRW cosmologies, indistinctly the Bunch-Davies wavefunction and cosmological correlators. We consider a large class of scala
Externí odkaz:
http://arxiv.org/abs/2402.06558
Autor:
Benincasa, Paolo, Dian, Gabriele
We provide a first principle definition of cosmological correlation functions for a large class of scalar toy models in arbitrary FRW cosmologies, in terms of novel geometries we name {\it weighted cosmological polytopes}. Each of these geometries en
Externí odkaz:
http://arxiv.org/abs/2401.05207
Publikováno v:
JHEP 02 (2024) 207
Theories with more than one scalar field often exhibit phase transitions producing potentially detectable gravitational wave (GW) signal. In this work we study the semi-annihilating $\mathbb{Z}_3$ dark matter model, whose dark sector comprises an ine
Externí odkaz:
http://arxiv.org/abs/2312.04627
Unitarity of time evolution is one of the basic principles constraining physical processes. Its consequences in the perturbative Bunch-Davies wavefunction in cosmology have been formulated in terms of the cosmological optical theorem. In this paper,
Externí odkaz:
http://arxiv.org/abs/2305.19686
Publikováno v:
Ocean Science, Vol 20, Pp 1003-1012 (2024)
Two types of variability are discernible in the ocean: a response to the atmospheric forcing and the so-called internal/intrinsic ocean variability, which is associated with internal instabilities, nonlinearities, and the interactions between process
Externí odkaz:
https://doaj.org/article/0166646f4f4c48759d0fc7fbae3b41a5
We perform a comprehensive study of a model in which the Higgs sector is extended to contain two Higgs doublet fields, with the four types of possibilities to couple to standard fermions, as well as an additional light pseudoscalar Higgs boson which
Externí odkaz:
http://arxiv.org/abs/2212.14788