virtual particle


Also found in: Dictionary, Wikipedia.

virtual particle

[′vər·chə·wəl ′pard·ə·kəl]
(quantum mechanics)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Putting this point in the complementary language of particles rather than fields, we can understand vacuum fluctuations in terms of the existence of virtual particles: virtual particles are quanta of the vacuum fluctuations.
In physics, for example, a virtual particle exhibits most of the characteristics of an ordinary particle but only exists for a limited time.
A few years ago, one of us proposed that if, from a deep meditative state, focussed human intention could shift the degree of coherence in the virtual particle sea of the vacuum by even a tiny amount, the ground state energy of the electron, other elementary particles, atoms, and molecules should be appreciably altered.
Smith seeks to rectify this defect in his argument, however, by pointing out that the Uncertainty relation also permits energy or particles (notably virtual particles) to 'spontaneously come into existence' for a very brief time before vanishing again.
These equations provide analytical expressions for the non-perturbative calculation of quantum self energies and interaction energies, and provides a physical process replacement for the virtual particle interpretation used in QED.
The fact that the quantum vacuum is seething with ghostly virtual particles that pop in and out of existence has been very well established after the discovery of the Lamb Shift [2], with a precision that is unmatched by any other physical measurements.
(i) [K.sub.0] is the relativistic kinetic energy, relative to a given observer, of a virtual particle located at the relativistic center of mass of the system S in (9), with the Einsteinian resultant mass [m.sub.0] in (12); and
"There are a lot of virtual particles which may stay for a short time and then disappear.
In physics, for example, virtual particles are called those having the same quantum numbers as real particles, but for which the relationship between momentum, energy and mass is not fulfilled (Sorokin, 2006).
In this process, black holes lose energy (and therefore mass) by interacting with virtual particles. The vacuum of space is not totally empty; virtual particles pop into and out of existence.
The random models tended to develop the virtual particles by some designed stochastic algorithm.

Full browser ?