Quasi-geodesics in relativistic gravity
arXiv:2011.05891 · doi:10.1140/epjc/s10052-020-08808-9
Abstract
A four-force parallel to the trajectory of a massive particle can always be eliminated by going to an affine parametrization, but the affine parameter is different from the proper time. The main application is to cosmology, in which elements of the cosmic fluid are subject to a pressure gradient parallel to their four-velocities. Natural implementations of parallel four-forces occur when the particle mass changes and in scalar-tensor cosmology.
arXiv comment13 pages, no figures
References in corpus (18)
- The String Dilaton and a Least Coupling Principle
- Cosmic anti-friction and accelerated expansion
- New Coordinates for de Sitter Space and de Sitter Radiation
- Regular coordinate systems for Schwarzschild and other spherical spacetimes
- Scalar--Tensor Theories of Gravity with \PHI Dependent Masses
- Collisional equilibrium, particle production and the inflationary universe
- On the response of gravitational antennas to dilatonic waves
- Modelling the rotational curves of spiral galaxies with a scalar field
- Cosmological particle production and generalized thermodynamic equilibrium
- Photon rockets and gravitational radiation
- Dark Matter with Variable Masses
- Inflation in a self-interacting gas universe
- Kinetic theory for nongeodesic particle motion: Selfinteracting equilibrium states and effective viscous fluid pressures
- Photon rockets and the Robinson-Trautman geometries
- Photon rockets moving arbitrarily in any dimension
- Sailing Towards the Stars Close to the Speed of Light
- Photon rockets in (anti-)de Sitter universe
- Interstellar travels aboard radiation-powered rockets
Cited by in corpus (6)
- More on the first-order thermodynamics of scalar-tensor and Horndeski gravity
- Dynamical dark energy can amplify the expansion rate of the Universe
- Tolman-Ehrenfest's criterion of thermal equilibrium extended to conformally static spacetimes
- Some effects of different coordinate systems in cosmology
- A simple ghost free and caustic free mimetic scalar field dark matter model
- A new approach to the thermodynamics of scalar-tensor gravity