Possible emission of cosmic X- and γ-rays by unstable particles at late times

Abstract

We find that charged unstable particles as well as neutral unstable particles with non-zero magnetic moment which live sufficiently long may emit electromagnetic radiation. This new mechanism is connected with the properties of unstable particles at the post exponential time region. Analyzing the transition times region between exponential and non-exponential form of the survival amplitude it is found that the instantaneous energy of the unstable particle can take very large values, much larger than the energy of this state for times from the exponential time region. Based on the results obtained for the model considered, it is shown that this purely quantum mechanical effect may be responsible for causing unstable particles to emit electromagnetic-, X-or γ-rays at some time intervals from the transition time regions.

Cosmological model with decaying vacuum energy from quantum mechanics

“…The decaying of false vacuum in the context of inflation has been investigated by Krauss and Dent [8]. The properties of unstable false vacuum can be investigated from the point of view of the quantum theory of unstable states [9,10] and some universal behavior of survival probability of vacuum states can be discovered.…”

New Quantum Effect: Emission of CosmicX– orγ–rays by Moving Unstable Particles at Late Times

“…These fluctuations of the instantaneous energy should manifest itself as fluctuations of the velocity of the particle. Based on results presented in [1] we present in this talk some new results and we show that this effect may cause unstable particles to emit electromagnetic radiation of a very wide spectrum: from radio frequencies through X-rays to γ-rays of very high energies and that the astrophysical processes are the place where this effect should be observed.…”

“…They allow one to find that κ(t mx ) = y mx = 37. [1]). Using these data one finds the relation of γ(t 1 ) with γ(t mx ) and using this relation one can extract Δv μ .…”

True quantum face of the “exponential” decay law

“…Note that this condition is rather strong but the Breit-Wigner model shows that relations (13) and (14) lead to finite and well defined h(t) for t > 0 even if this strong condition is not satisfied (see e.g., [24,25,28]). From (14) one conludes that h(t) can exist for t > 0 if the following two conditions are satisfied: |χ ω (t)| < ∞ for t > 0 and |χ ω (t)| ≤ α |a(t)| for t → ∞, where α = const.…”