algebraic quantum field theory (perturbative, on curved spacetimes, homotopical)
quantum mechanical system, quantum probability
interacting field quantization
Under cosmological electromagnetism one understands (the study of) electromagnetic fields on cosmological scales.
Of particular interest for cosmic electromagnetism would be non-simply-connected cosmic topology (such as the 3-torus or a lens space but not the 3-sphere) since these could support locally trivial but globally non-trivial electromagnetic fields (namely with vanishing electromagnetic flux density but still non-trivial holonomy/monodromy around non-contractible cosmological curves) such as discussed in the Aharonov-Bohm effect.
Moreover, lens space-topology with its integral torsion-cohomology group in degree 2 (cf. there) would even support “fractional” such electromagnetic fields (for which certain integer multiples of the field would vanish), which would in principle be detectable by an uncertainty principle for quantum observables on the cosmic electromagnetic field [Freed, Moore & Segal 2007b, p. 28].
Andrii Neronov, Ievgen Vovk, Evidence for strong extragalactic magnetic fields from Fermi observations of TeV blazars, Science 328 (2010) 73-75 [arXiv:1006.3504, doi:10.1126/science.1184192]
Takeshi Kobayashi and Martin S. Sloth, Early cosmological evolution of primordial electromagnetic fields, Phys. Rev. D 100 (2019) 023524 [arXiv:1903.02561, doi:10.1103/PhysRevD.100.023524]
Last revised on June 7, 2024 at 13:39:46. See the history of this page for a list of all contributions to it.