TY - JOUR

T1 - On dynamic aspects of the Proca field screening by a black hole

T2 - Can the existence of an arbitrarily small photon mass be observable?

AU - Erofeev, Andrei L.

PY - 2020/6/1

Y1 - 2020/6/1

N2 - Classical black holes are known for almost half a century to nullify exterior classical massive vector field associated with a charge crossing the event horizon. This implies that, from the point of view of an external observer, the Proca field of the charge is screened with the strength gradually increasing as the charge adiabatically approaches the event horizon. In this paper we reject the adiabaticity constraint and calculate analytically the field evolution with respect to a distant observer in the frame of the simplest model of a contracting charged spherical shell concentrically surrounding a Schwarzschild black hole. We show that a time scale of the screening is determined by a mass of the black hole and, moreover, loss of Proca hair during the collapse of charged matter has the same temporal character. Due to existence of the event horizon, there is discontinuous jump between massive and massless electrodynamics. This means that presence of an arbitrarily small mass of the photon induces observable effects, which include generation of electric asymmetry of the Universe and galactic magnetic fields.

AB - Classical black holes are known for almost half a century to nullify exterior classical massive vector field associated with a charge crossing the event horizon. This implies that, from the point of view of an external observer, the Proca field of the charge is screened with the strength gradually increasing as the charge adiabatically approaches the event horizon. In this paper we reject the adiabaticity constraint and calculate analytically the field evolution with respect to a distant observer in the frame of the simplest model of a contracting charged spherical shell concentrically surrounding a Schwarzschild black hole. We show that a time scale of the screening is determined by a mass of the black hole and, moreover, loss of Proca hair during the collapse of charged matter has the same temporal character. Due to existence of the event horizon, there is discontinuous jump between massive and massless electrodynamics. This means that presence of an arbitrarily small mass of the photon induces observable effects, which include generation of electric asymmetry of the Universe and galactic magnetic fields.

KW - GAUGE-INVARIANCE

KW - SELF-INTERACTION

KW - BARYON NUMBER

KW - NONEXISTENCE

KW - HAIR

UR - http://www.scopus.com/inward/record.url?scp=85085990572&partnerID=8YFLogxK

U2 - 10.1140/epjc/s10052-020-8044-1

DO - 10.1140/epjc/s10052-020-8044-1

M3 - Article

AN - SCOPUS:85085990572

VL - 80

JO - European Physical Journal C

JF - European Physical Journal C

SN - 1434-6044

IS - 6

M1 - 495

ER -