How to observe the vacuum decay in low-energy heavy-ion collisions

Abstract

In slow collisions of two bare nuclei with the total charge larger than the critical value $Z_{\mathrm{cr}}\approx 173$, the initially neutral vacuum can spontaneously decay into the charged vacuum and two positrons. Detection of the spontaneous emission of positrons would be the direct evidence of this fundamental phenomenon. However, the spontaneously produced particles are indistinguishable from the dynamical background in the positron spectra. We show that the vacuum decay can nevertheless be observed via impact-sensitive measurements of pair-production probabilities. Possibility of such observation is demonstrated using numerical calculations of pair production in low-energy collisions of heavy nuclei.

References in corpus (10)

• Relativistic calculations of the charge-transfer probabilities and cross sections for low-energy collisions of H-like ions with bare nuclei
• Calculation of electron-positron production in supercritical uranium-uranium collisions near the Coulomb barrier
• Electron-positron pair creation in low-energy collisions of heavy bare nuclei
• Resonances in positron scattering on a supercritical nucleus and spontaneous production of $e^{+}{e}^{-}$ pairs
• Relativistic calculations of the K-K charge transfer and K-vacancy production probabilities in low-energy ion-atom collisions
• Electron-positron pair production in slow collisions of heavy nuclei beyond the monopole approximation
• One-center calculations of the electron-positron pair creation in low-energy collisions of heavy bare nuclei
• Relativistic calculations of the x-ray emission following the Xe-Bi${}^{83+}$ collision
• Electron-positron pair production in ion collisions at low velocity beyond Born approximation
• Electromagnetic production of positron and electron in collisions of heavy nuclei

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