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- Title
Scalar QED Model for Polarizable Particles in Thermal Equilibrium or in Hyperbolic Motion in Vacuum.
- Authors
Sinha, Kanu; Milonni, Peter W.
- Abstract
We consider a scalar QED (quantum electrodynamics) model for the frictional force and the momentum fluctuations of a polarizable particle in thermal equilibrium with radiation or in hyperbolic motion in a vacuum. In the former case the loss of particle kinetic energy due to the frictional force is compensated by the increase in kinetic energy associated with the momentum diffusion, resulting in the Planck distribution when it is assumed that the average kinetic energy satisfies the equipartition theorem. For hyperbolic motion in vacuum the frictional force and the momentum diffusion are similarly consistent with an equilibrium with a Planckian distribution at the temperature T = ℏ a / 2 π k B c . The quantum fluctuations of the momentum imply that it is only the average acceleration a that is constant when the particle is subject to a constant applied force.
- Subjects
THERMAL equilibrium; FRICTION; EQUIPARTITION theorem; QUANTUM fluctuations; KINETIC energy; QUANTUM electrodynamics; MOMENTUM distributions
- Publication
Physics (2624-8174), 2024, Vol 6, Issue 1, p356
- ISSN
2624-8174
- Publication type
Article
- DOI
10.3390/physics6010023