Zobrazeno 1 - 10
of 28 957
pro vyhledávání: '"A. Vainshtein"'
We revisit a method to incorporate the Vainshtein screening mechanism in N-body simulations proposed by R. Scoccimarro in~\cite{Scoccimarro:2009eu}. We further extend this method to cover a subset of Horndeski theories that evade the bound on the spe
Externí odkaz:
http://arxiv.org/abs/2303.09549
The muon anomalous magnetic moment continues to attract attention due to the possible tension between the experimentally measured value and the theoretical Standard Model prediction. With the aim to reduce the uncertainty on the hadronic light-by-lig
Externí odkaz:
http://arxiv.org/abs/2211.17183
Autor:
Taniguchi, Kitaro, Kase, Ryotaro
Publikováno v:
Phys. Rev. D 105, 104044 (2022)
We study the Vainshtein screening mechanism in Horndeski theories in the presence of a scalar field $\phi$ nonminimally and kinetically coupled to ordinary matter field. A general interacting Lagrangian describing this coupling is characterized by en
Externí odkaz:
http://arxiv.org/abs/2203.08520
We present a non-linear analysis of perturbations around cosmological solutions in Generalised Massive gravity. This Lorentz invariant theory is an extension of de Rham, Gabadadze, Tolley massive gravity that propagates $5$ degrees of freedom while a
Externí odkaz:
http://arxiv.org/abs/2107.01423
Publikováno v:
JCAP 03 (2021) 010
Within the landscape of modified theories of gravity, progress in understanding the behaviour of, and developing tests for, screening mechanisms has been hindered by the complexity of the field equations involved, which are nonlinear in nature and ch
Externí odkaz:
http://arxiv.org/abs/2011.07037
Publikováno v:
JCAP 02 (2021) 050
The Vainshtein screening mechanism relies on nonlinear interaction terms becoming dominant close to a compact source. However, theories displaying this mechanism are generally understood to be low-energy theories: it is unclear that operators emergin
Externí odkaz:
http://arxiv.org/abs/2008.01456
Autor:
Anson, Timothy, Babichev, Eugeny
Publikováno v:
Phys. Rev. D 102, 044046 (2020)
We study the Vainshtein mechanism in the context of slowly rotating stars in scalar-tensor theories. While the Vainshtein screening is well established for spherically symmetric spacetimes, we examine its validity in the axisymmetric case for slowly
Externí odkaz:
http://arxiv.org/abs/2005.05990
Autor:
Nikiforova, Vasilisa
Publikováno v:
Phys. Rev. D 101, 064017 (2020)
It was pointed out long ago by Vainshtein [Phys. Lett. 39B, 393 (1972)] that the weak-field perturbation expansion of generic theories (of the nonlinear Fierz-Pauli type) involving massive spin-2 excitations breaks down below a certain distance aroun
Externí odkaz:
http://arxiv.org/abs/2001.07148
Publikováno v:
Phys. Rev. D 102, 123529 (2020)
We demonstrate that the instabilities in linear cosmological perturbations in bimetric theory are the manifestation of the non-linear Vainshtein mechanism on an FRW background. The spin-2 mass serves as the cosmological Vainshtein scale in this case.
Externí odkaz:
http://arxiv.org/abs/1912.09449
Autor:
Kuntz, Adrien
Publikováno v:
Phys. Rev. D 100, 024024 (2019)
Adding a light scalar degree of freedom to General Relativity often induces a fifth force whose magnitude is strongly constrained by laboratory experiments and solar system tests. The Vainshtein screening mechanism ensures that the effects of this su
Externí odkaz:
http://arxiv.org/abs/1905.07340