one-particle exchange

one-particle exchange

[′wən ‚pärd·ə·kəl iks′chānj]
(particle physics)
A model for the interaction of two particles in which the interaction results entirely from a single virtual particle being emitted by one interacting particle and absorbed by the other.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.