Do photons travel faster than gravitons?

Damian Ejlli

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование


The vacuum polarization in an external gravitational field due to one loop electron-positron pair and one loop millicharged fermion-antifermion pair is studied. Considering the propagation of electromagnetic (EM) radiation and gravitational waves (GWs) in an expanding universe, it is shown that by taking into account QED effects in curved spacetime, the propagation velocity of photons is superluminal and can exceed that of gravitons. We apply these results to the case of the GW170817 event detected by LIGO. If the EM radiation and GWs are emitted either simultaneously or with a time difference from the same source, it is shown that the EM radiation while propagating with superluminal velocity, would be detected either in advance or in delay with respect to GW depending on the ratio of millicharged fermion relative charge to mass /m.

Язык оригиналаанглийский
Номер статьи035
Число страниц13
ЖурналJournal of Cosmology and Astroparticle Physics
Номер выпуска2
СостояниеОпубликовано - 19 февр. 2018


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