Schnorr group

From formulasearchengine
Revision as of 10:55, 29 November 2012 by en>Quondum (Changing size ranges to match NIST recommendations for 80- to 128-bit security levels)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

Template:Expert-subject In theoretical physics, a graviscalar (also known as a radion) is a hypothetical particle that emerges as an excitation of the metric tensor (i.e. gravitational field) but whose physical properties are virtually indistinguishable from a scalar in four dimensions, as shown in Kaluza–Klein theory. The new scalar field comes from a component of the metric tensor where the figure 5 labels an additional, fifth dimension. It can be thought of as a measure of the size of the extra dimension, with variations in the scalar field representing variations in the size of the extra dimensions.

In models with multiple extra dimensions, there exist several such particles.

In theories with extended supersymmetry, a graviphoton is usually a superpartner of the graviton that behaves as a particle with spin 1.

This concept is closely related to that of gauged Higgs models.

References

  • Roy Maartens, “Brane-World Gravity”, Living Rev. Relativity, 7, (2004), 7. [1], [2]

See also


Template:Particle-stub Template:Quantum-stub Template:Particles