中文
相关论文

相关论文: On the mass of bootstrapped Newtonian sources

200 篇论文

We analyse the classical configurations of a bootstrapped Newtonian potential generated by homogeneous spherically symmetric sources in terms of a quantum coherent state. We first compute how the mass and mean wavelength of these solutions…

广义相对论与量子宇宙学 · 物理学 2020-07-01 R. Casadio , M. Lenzi , A. Ciarfella

A non-linear equation obtained by adding gravitational self-interaction terms to the Poisson equation for Newtonian gravity is here employed in order to analyse a static spherically sym- metric homogeneous compact source of given proper…

广义相对论与量子宇宙学 · 物理学 2018-11-21 R. Casadio , M. Lenzi , O. Micu

We consider compact objects in a classical and non-relativistic generalisation of Newtonian gravity, dubbed bootstrapped Newtonian theory, which includes higher-order derivative interaction terms of the kind generically present in the…

广义相对论与量子宇宙学 · 物理学 2022-07-14 Roberto Casadio , Iberê Kuntz , Octavian Micu

We study equilibrium configurations of a homogenous ball of matter in a bootstrapped description of gravity which includes a gravitational self-interaction term beyond the Newtonian coupling. Both matter density and pressure are accounted…

广义相对论与量子宇宙学 · 物理学 2020-01-08 Roberto Casadio , Michele Lenzi , Octavian Micu

We compute quantum corrections for the gravitational potential obtained by including a derivative self-coupling in its classical dynamics as a toy model for analysing quantum gravity in the strong field regime. In particular, we focus on…

广义相对论与量子宇宙学 · 物理学 2020-07-15 Roberto Casadio , Iberê Kuntz

We study self-gravitating stars in the bootstrapped Newtonian picture for polytropic equations of state. We consider stars that span a wide range of compactness values. Both matter density and pressure are sources of the gravitational…

广义相对论与量子宇宙学 · 物理学 2020-11-25 Roberto Casadio , Octavian Micu

Bootstrapped Newtonian gravity is a non-linear version of Newton's law which can be lifted to a fully geometric theory of gravity starting from a modified potential. Here, we study geodesics in the bootstrapped Newtonian effective metric in…

广义相对论与量子宇宙学 · 物理学 2022-05-18 Anna D'Addio , Roberto Casadio , Andrea Giusti , Mariafelicia De Laurentis

Bootstrapped Newtonian gravity was developed with the purpose of estimating the impact of quantum physics in the nonlinear regime of the gravitational interaction, akin to corpuscular models of black holes and inflation. In this work, we…

广义相对论与量子宇宙学 · 物理学 2021-02-22 Roberto Casadio , Andrea Giusti

We determine the complete space-time metric from the bootstrapped Newtonian potential generated by a static spherically symmetric source in the surrounding vacuum. This metric contains post-Newtonian parameters which can be further used to…

广义相对论与量子宇宙学 · 物理学 2021-03-10 Roberto Casadio , Andrea Giusti , Iberê Kuntz , Giulio Neri

We study the bootstrapped Newtonian potential generated by a localised source in one and two spatial dimensions, and show that both cases naturally lead to finite spatial extensions of the outer vacuum. We speculate that this implies the…

广义相对论与量子宇宙学 · 物理学 2022-06-07 Roberto Casadio , Octavian Micu , Jonas Mureika

We calculate the leading quantum and semi-classical corrections to the Newtonian potential energy of two widely separated static masses. In this large-distance, static limit, the quantum behaviour of the sources does not contribute to the…

高能物理 - 理论 · 物理学 2011-07-19 Ivan J. Muzinich , Stamatis Vokos

In this work we study diffeomorphism-invariant metric-affine theories of gravity from the point of view of self-interacting field theories on top of Minkowski spacetime (or other background). We revise how standard metric theories couple to…

广义相对论与量子宇宙学 · 物理学 2023-12-12 Adrià Delhom , Gerardo García-Moreno , Manuel Hohmann , Alejandro Jiménez-Cano , Tomi S. Koivisto

For a modified Randall-Sundrum model [Phys. Rev. D 88 (2013) 025048], the graviton equations are derived and the mass spectrum found. The latter includes a massless graviton and a continuum mass with a gap. There is no negative mass-squared…

广义相对论与量子宇宙学 · 物理学 2016-02-17 Shahrokh Parvizi , Mojtaba Shahbazi

We model a compact relativistic body with anisotropic pressures in the presence of an electric field. The equation of state is barotropic with a linear relationship between the radial pressure and the energy density. Simple exact models of…

广义相对论与量子宇宙学 · 物理学 2015-06-17 P. Mafa Takisa , S. D. Maharaj

We hereby derive the Newtonian metric potentials for the fourth-derivative gravity including the one-loop logarithm quantum corrections. It is explicitly shown that the behavior of the modified Newtonian potential near the origin is…

广义相对论与量子宇宙学 · 物理学 2021-04-08 Nicolò Burzillà , Breno L. Giacchini , Tibério de Paula Netto , Leonardo Modesto

The condition for pressure isotropy, for spherically symmetric gravitational fields with charged and uncharged matter, is reduced to a recurrence equation with variable, rational coefficients. This difference equation is solved in general…

广义相对论与量子宇宙学 · 物理学 2009-11-11 S. D. Maharaj , S. Thirukkanesh

The derivation of effective quantum gravity corrections to Newton's potential is an important step in the whole effective quantum field theory approach. We hereby add new strong arguments in favor of omitting all the diagrams with internal…

高能物理 - 理论 · 物理学 2022-02-17 Tibério de Paula Netto , Leonardo Modesto , Ilya L. Shapiro

The effective action for quantum gravity coupled to matter contains corrections arising from the functional measure. We analyse the effect of such corrections for anisotropic self-gravitating compact objects described by means of the…

广义相对论与量子宇宙学 · 物理学 2025-07-29 R. Casadio , I. Kuntz , R. da Rocha

An iterative method is presented for solving the problem of a uniformly rotating, self-gravitating ring without a central body in Newtonian gravity by expanding about the thin ring limit. Using this method, a simple formula relating mass to…

天体物理学 · 物理学 2009-11-13 David Petroff , Stefan Horatschek

We use a transformation due to Bekenstein to relate the ADM and Bondi masses of asymptotically-flat solutions of the Einstein equations with, respectively, scalar sources and conformal-scalar sources. Although the conformal-scalar…

广义相对论与量子宇宙学 · 物理学 2011-06-01 Paul Tod
‹ 上一页 1 2 3 10 下一页 ›