Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Torrenti, Francisco"'
Publikováno v:
Rep. Prog. Phys. 87 (2024) 094901
We discuss the present state and planned updates of CosmoLattice, a cutting-edge code for lattice simulations of non-linear dynamics of scalar-gauge field theories in an expanding background. We first review current capabilities of the code, includin
Externí odkaz:
http://arxiv.org/abs/2312.15056
Publikováno v:
Phys.Rev.D 109, 045015 (2024)
We develop a new regularization method for the stress-energy tensor and the two-point function of free quantum scalar fields propagating in cosmological spacetimes. We proceed by extending the adiabatic regularization scheme with the introduction of
Externí odkaz:
http://arxiv.org/abs/2311.08986
Autor:
Ferreiro, Antonio, Torrenti, Francisco
Publikováno v:
Phys. Lett. B 840 (2023) 137868
We reexamine the regularization of the two-point function of a scalar field in a Friedmann-Lemaitre-Robertson-Walker (FLRW) spacetime. Adiabatic regularization provides a set of subtraction terms in momentum space that successfully remove its ultravi
Externí odkaz:
http://arxiv.org/abs/2212.01078
Publikováno v:
JCAP 02 (2023) 019
We characterize the post-inflationary dynamics of an inflaton $\phi$ coupled to multiple interacting daughter fields $X_n$ ($n=1,\dots N_d$) through quadratic-quadratic interactions $g_n^ 2\phi^2 X_n^2$. We assume a monomial inflaton potential $V(\ph
Externí odkaz:
http://arxiv.org/abs/2206.06319
Publikováno v:
Phys.Rev.D 105 (2022) 4, 043532
We study the evolution of the energy distribution and equation of state of the Universe from the end of inflation until the onset of either radiation domination (RD) or a transient period of matter domination (MD). We use both analytical techniques a
Externí odkaz:
http://arxiv.org/abs/2112.11280
Publikováno v:
Comput.Phys.Commun. 283 (2023) 108586
This is the user manual for CosmoLattice, a modern package for lattice simulations of the dynamics of interacting scalar and gauge fields in an expanding universe. CosmoLattice incorporates a series of features that makes it very versatile and powerf
Externí odkaz:
http://arxiv.org/abs/2102.01031
Publikováno v:
JCAP 04 (2021) 035
We present a comprehensive discussion on lattice techniques for the simulation of scalar and gauge field dynamics in an expanding universe. After reviewing the continuum formulation of scalar and gauge field interactions in Minkowski and FLRW backgro
Externí odkaz:
http://arxiv.org/abs/2006.15122
Publikováno v:
Phys.Lett.B 811 (2020) 135888
We study the energy distribution and equation of state of the universe between the end of inflation and the onset of radiation domination (RD), considering observationally consistent single-field inflationary scenarios, with a potential 'flattening'
Externí odkaz:
http://arxiv.org/abs/2005.07563
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Publikováno v:
JCAP 1910 (2019) no.10, 002
Oscillons are spatially localised strong fluctuations of a scalar field. They can e.g. form after inflation when the scalar field potential is shallower than quadratic away from the minimum. Although oscillons are not protected by topology, they can
Externí odkaz:
http://arxiv.org/abs/1907.00611