ar X iv : 0 71 0 . 34 15 v 1 [ gr - q c ] 1 8 O ct 2 00 7 Modified gravity and the origin of inertia
نویسنده
چکیده
Modified gravity theory is known to violate Birkhoff’s theorem. We explore a key consequence of this violation, the effect of distant matter in an Einstein-de Sitter universe on the motion of test particles. We find that when a particle is accelerated, a force is experienced that is proportional to the particle’s mass and acceleration and acts in the direction opposite to that of the acceleration. We identify this force with inertia. At very low accelerations, our inertial law deviates slightly from that of Newton, yielding a testable prediction that may be verified with relatively simple experiments.
منابع مشابه
ar X iv : 0 90 7 . 30 27 v 1 [ gr - q c ] 1 7 Ju l 2 00 9 Scale transformation , modified gravity , and Brans - Dicke theory
A model of Einstein-Hilbert action subject to scale transformation is studied and then its correspondence with modified gravity and Brans-Dicke theory is examined. PACS: 04.50.Kd
متن کاملar X iv : 0 71 0 . 20 41 v 3 [ gr - q c ] 1 3 M ar 2 00 8 Thin - shell wormholes supported by ordinary matter in Einstein – Gauss – Bonnet gravity
The generalized Darmois–Israel formalism for Einstein–Gauss–Bonnet theory is applied to construct thin-shell Lorentzian wormholes with spherical symmetry. We calculate the energy localized on the shell, and we find that for certain values of the parameters wormholes could be supported by matter not violating the energy conditions.
متن کاملar X iv : 0 71 1 . 25 73 v 1 [ gr - q c ] 1 6 N ov 2 00 7 Spinning particles in scalar - tensor gravity
We develop a new model of a spinning particle in Brans-Dicke space-time using a metric-compatible connection with torsion. The particle's spin vector is shown to be Fermi-parallel (by the Levi-Civita connection) along its worldline (an autoparallel of the metric-compatible connection) when neglecting spin-curvature coupling.
متن کاملar X iv : 0 71 2 . 38 38 v 3 [ gr - q c ] 3 1 M ay 2 00 8 General Transformation Formulas for Fermi - Walker Coordinates
متن کامل
ar X iv : 0 71 0 . 43 17 v 1 [ m at h . A P ] 2 3 O ct 2 00 7 ONE DIMENSIONAL CONFORMAL METRIC FLOW II
In this paper we continue our studies of the one dimensional conformal metric flows, which were introduced in [8]. In this part we mainly focus on evolution equations involving fourth order derivatives. The global existence and exponential convergence of metrics for the 1-Q and 4-Q flows are obtained.
متن کامل