Zobrazeno 1 - 10
of 17 122
pro vyhledávání: '"minimal coupling"'
Autor:
Wada, Juntaro, Yin, Wen
If a scalar field couples to the Ricci scalar with a large non-minimal coupling, the Standard Model coupling parameters can differ above and below an intermediate field range of the scalar due to the non-renormalizability. In this paper, we study, fo
Externí odkaz:
http://arxiv.org/abs/2411.00768
The Cavendish torsion balance is the instrument of choice for measuring weak forces, such as gravity. Although torsion balances have extremely high sensitivity for measuring forces over ranges of a few cm and more, their dynamics make it difficult to
Externí odkaz:
http://arxiv.org/abs/2411.10306
In this article, we propose a new way to handle interactions between two scalar fields in the cosmological backdrop where one scalar field oscillates rapidly in the cosmological time scale while the other does not show any periodic behavior in the sa
Externí odkaz:
http://arxiv.org/abs/2410.20736
Autor:
Bonafé, Franco P., Albar, Esra Ilke, Ohlmann, Sebastian T., Kosheleva, Valeriia P., Bustamante, Carlos M., Troisi, Francesco, Rubio, Angel, Appel, Heiko
We report the first ab initio, non-relativistic QED method that couples light and matter self-consistently beyond the electric dipole approximation and without multipolar truncations. This method is based on an extension of the Maxwell-Pauli-Kohn-Sha
Externí odkaz:
http://arxiv.org/abs/2409.08959
Autor:
Alviani, Edoardo, Falkowski, Adam
We study the low-energy effective theories of photons and gravitons, matching them at one loop to a UV completion with a massive spinning matter particle. The matter is allowed to have non-minimal electromagnetic and gravitational interactions. We co
Externí odkaz:
http://arxiv.org/abs/2408.03439
Publikováno v:
Physica Scripta, Volume 99, Issue 6, id.065050, 2024
Among the recent extensions to standard General Relativity, $f(R,\mathcal{L}_m)$ gravity has risen an interest given the possibility of coupling between geometry and matter. We examine the simplest model with non-minimal coupling in the context of co
Externí odkaz:
http://arxiv.org/abs/2408.00580
In this paper, we investigate the impact of scalar fluctuations ($\chi$) non-minimally coupled to gravity, $\xi\chi^2 R$, as a potential source of secondary gravitational waves (SGWs). Our study reveals that when reheating EoS $\wre < 1/3$ and $\xi \
Externí odkaz:
http://arxiv.org/abs/2408.07767
Publikováno v:
Astrophys.J.Suppl. 275 (2024) 14
We study a realization of the inflationary scenario where the Peccei-Quinn (PQ) symmetry is spontaneously broken during inflation, facilitated by its non-minimal coupling to gravity. This results in effectively two-field inflation: the early stage is
Externí odkaz:
http://arxiv.org/abs/2406.15818
Autor:
Hell, Anamaria
We study the degrees of freedom of the Proca theory, non-minimally coupled to gravity. In the Minkowski background, this theory propagates five degrees of freedom -- a massive longitudinal mode, two massive vector ones, and two massless tensor modes.
Externí odkaz:
http://arxiv.org/abs/2403.18673
The non-minimal coupling of scalar fields to gravity has been claimed to violate energy conditions, leading to exotic phenomena such as traversable wormholes, even in classical theories. In this work we adopt the view that the non-minimal coupling ca
Externí odkaz:
http://arxiv.org/abs/2309.10848