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The possibility of the effect of electromagnetic radiation (hereinafter -radiation from vacuum) due to the interaction of zero-point vacuum fluctuationswith free charged particles accelerated at relativistic speeds in electric ormagnetic fields is theoretically demonstrated and confirmed by calculations.The proposed effect is similar to the appearance of radiation in the Lamb shifteffect in the hydrogen atom and the dynamical Casimir effect. However, unlikethese effects, the radiation characteristics depend on the induction ofelectric or magnetic fields. Moreover, in order to comply with the law ofconservation of momentum, the braking radiation of charged particles isconsidered as the "third body". As opposed to this bremsstrahlung, radiationfrom vacuum will not have a preferred direction. Analytical expressionsdescribing the radiation characteristics were obtained using a semi-classicalmethod. The calculated values of the energy and intensity of radiation fromvacuum demonstrate the possibility of using optical methods to determine thecharacteristics of such radiation in strong electric or magnetic fields. Theresults of the work can be used in studies of astrophysical objects withpowerful electric or magnetic fields, as well as in investigations of physicalvacuum states under laboratory conditions.

Effect of radiation from vacuum in the interaction of zero-point fluctuations with charged particles accelerated in electric or magnetic fields