Year: 2008
Type: article
Abstract: We have computed the time-dependent charge density for a fermionic two-particle system. In classical electrodynamics the total charge density is given by the sum of the individual densities associated with each particle. This intuitive relationship changes in quantum field theory if the particle pair was created from the vacuum. In this case the presence of the vacuum can lead to high-frequency oscillations in the resulting charge density. We note the modulation in the density outside the region where the pair is created may be interesting for probing the fermionic vacuum.
Source: Europhysics Letters (EPL)
Authors: T. Cheng, C. C. Gerry, Q. Su, R. Grobe
Institutions: Illinois State University, Lehman College
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
Funder: National Science Foundation
OpenAlex ID: W1996511679