Title: X-Ray Emission from Atomic Systems Can Distinguish Between Prevailing Dynamical Wave-Function Collapse Models

Authors: Kristian Piscicchia (Centro Ricerche Enrico Fermi), Sandro Donadi (Centre for Quantum Materials and Technologies, School of Mathematics and Physics, Queen’s University, Belfast- UK), Simone Manti (Laboratori Nazionali di Frascati, INFN-Italy), Angelo Bassi (INFN, Sezione di Trieste, Department of Physics, University of Trieste-Italy), Maaneli Derakhshani (Department of Mathematics, Rutgers University, New Jersey- USA) Lajos Diósi (Eötvös Loránd University, Wigner Research Centre for Physics, Budapest-Hungary) and Catalina Curceanu(INFN, Frascati, IFIN-HH, Institutul National pentru Fizica si Inginerie Nucleara Horia Hulubei, Măgurele, Romania)

Published on Phys. Rev. Lett. 132, 250203 – 18 June 2024

DOI: https://doi.org/10.1103/PhysRevLett.132.250203

ABSTRACT

This work investigates spontaneous electromagnetic radiation from atomic systems induced by dynamical wave-function collapse in the X-ray domain. Strong departures are evidenced for the simple cases in the literature, in which the emission is either perfectly coherent (protons in the same nuclei) or incoherent (electrons). In this low-energy regime, the spontaneous radiation rate strongly depends on the atomic species under investigation. For the first time, it is found to depend on the specific collapse model.