Mass loss by a scalar charge in an expanding universe

Abstract

We study the phenomenon of mass loss by a scalar charge -- a point particle that acts a source for a noninteracting scalar field -- in an expanding universe. The charge is placed on comoving world lines of two cosmological spacetimes: a de Sitter universe, and a spatially-flat, matter-dominated universe. In both cases, we find that the particle's rest mass is not a constant, but that it changes in response to the emission of monopole scalar radiation by the particle. In de Sitter spacetime, the particle radiates all of its mass within a finite proper time. In the matter-dominated cosmology, this happens only if the charge of the particle is sufficiently large; for smaller charges the particle first loses some of its mass, but then regains it all eventually.

arXiv comment11 pages, RevTeX4, Accepted for Phys. Rev. D

References in corpus (2)

• Axiomatic approach to radiation reaction of scalar point particles in curved spacetime
• Self force on a scalar charge in the spacetime of a stationary, axisymmetric black hole

Cited by in corpus (34)

• The motion of point particles in curved spacetime
• Gravitational self force in extreme mass-ratio inspirals
• Computing inspirals in Kerr in the adiabatic regime. I. The scalar case
• Orbital fingerprints of ultralight scalar fields around black holes
• Eccentricity evolution of compact binaries and applications to gravitational-wave physics
• Self force on a scalar charge in Kerr spacetime: circular equatorial orbits
• Self force on a scalar charge in Kerr spacetime: eccentric equatorial orbits
• The Cosmological Memory Effect
• Mode-sum regularization of the scalar self-force: Formulation in terms of a tetrad decomposition of the singular field
• Electromagnetic and gravitational self-force on a relativistic particle from quantum fields in curved space
• Classical radiation by free-falling charges in de Sitter spacetime
• Gravitational lensing beyond geometric optics: I. Formalism and observables
• The Memory Effect for Particle Scattering in Even Spacetime Dimensions
• De Sitter space and perpetuum mobile
• Self-Force with a Stochastic Component from Radiation Reaction of a Scalar Charge Moving in Curved Spacetime
• Transverse-Traceless Gravitational Waves In A Spatially Flat FLRW Universe: Causal Structure from Dimension Reduction
• Self force on a scalar charge in Kerr spacetime: inclined circular orbits
• More On Cosmological Gravitational Waves And Their Memories
• Mass change and motion of a scalar charge in cosmological spacetimes
• Repeated faint quasinormal bursts in extreme-mass-ratio inspiral waveforms: Evidence from frequency-domain scalar self-force calculations on generic Kerr orbits
• Gravitational wave memory and its tail in cosmology
• A nonlinear scalar model of extreme mass ratio inspirals in effective field theory I. Self force through third order
• Self-forces in arbitrary dimensions
• Foundations of the self-force problem in arbitrary dimensions
• On the equivalence principle and gravitational and inertial mass relation of classical charged particles
• Extended-body effects in cosmological spacetimes
• Instability of scalar charges in 1+1D and 2+1D
• A Line Source In Minkowski For The de Sitter Spacetime Scalar Green's Function: Massless Minimally Coupled Case
• Green's function of a massless scalar field in curved space-time and superluminal phase velocity of the retarded potential
• Late-time quantum radiation by a uniformly accelerated detector in de Sitter spacetime
• Cosmological memory effect in scalar-tensor theories
• Localized Particle States and Dynamics Gravitational Effects
• Self-force via energy-momentum and angular momentum balance equations
• Hadamard Tail from Initial Data on the Light Cone