Vacuum Polarization


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vacuum polarization

[′vak·yəm ‚pō·lə·rə′zā·shən]
(quantum mechanics)
A process in which an electromagnetic field gives rise to virtual electron-positron pairs that effectively alter the distribution of charges and currents that generated the original electromagnetic field.

Polarization, Vacuum

 

in the quantum theory of fields, the change in the distribution of charged virtual particle-antipar-ticle pairs under the influence of an electromagnetic field. The vacuum polarization predicted by quantum electrodynamics produces effects that can be detected experimentally. These include shifts in the potential energy of the electrons in an atom, corrections to the cross section for elastic scattering at large angles, and the scattering of light by light—as yet unobserved in a Coulomb field.

References in periodicals archive ?
The vacuum polarization by a scalar field has been studied in the Schwarzschild spacetime [10], in a waveguide [11], in the de Sitter spacetime with the presence of global monopole [12], and in a homogeneous space with an invariant metric [13].
In this paper, we will further analytically demonstrate that the vacuum polarization by the scalar field dark energy of 5D gravity can increase the relative optical path length (i.
2 5D gravity and vacuum polarization by scalar field dark energy
With a scalar field, however, a 5D gravity can lead to a sequence of new effects such as the space or vacuum polarization [8-9, 14], electric redshift [16], gravitational field shielding [17-18], gravitationless black hole [19], modified neutron star mass-radius relation [20], and so on.
To see how significant the space or vacuum polarization is, we plot, in Figure 2, the relative permittivity [[epsilon].
In the following section, we will examine whether the LIGO detectors can detect such small vacuum polarization or not.
This study provides a creative approach for LIGO to detect the vacuum polarization by the scalar field of 5D gravity, a candidate of dark energy that drives the universe in its accelerating expansion.
to the separate Planck particles of the PV, where the first and second ratios in (1) and (2) are vacuum polarization and curvature forces respectively.
Again, the first and second ratios in (3) and (4) are vacuum polarization and curvature forces respectively.
to the separate Planck particles of the PV, where the first and second ratios in (2) are the vacuum polarization and curvature forces respectively.
Again, the first and second ratios in (4) are vacuum polarization and curvature forces.
is the free space Coulomb force in terms of the vacuum polarization superforce.