The work presented in this paper aimed to obtain new, more stringent, limits on the parameters of the Continuous Spontaneous Localization collapse model. The result is accomplished by performing a Bayesian analysis of the X-ray emission data collected by the IGEX collaboration, compared with the spontaneous photon emission which is predicted by collapse models. The most stringent limits on the collapse rate $\lambda$ and the correlation length $r_C$ of the CSL model are obtained , with respect to any other method, over a broad range of the parameters space.The work presented in this paper aimed to obtain new, more stringent, limits on the parameters of the Continuous Spontaneous Localization collapse model. The result is accomplished by performing a Bayesian analysis of the X-ray emission data collected by the IGEX collaboration, compared with the spontaneous photon emission which is predicted by collapse models. The most stringent limits on the collapse rate $\lambda$ and the correlation length $r_C$ of the CSL model are obtained , with respect to any other method, over a broad range of the parameters space.

Corfu Summer Institute School and Workshops on Elementary Particle Physics and Gravity (CORFU)Aug 22, 20180 citations

Photon-emission rate from atomic systems in the CSL model

Stephen L. Adler, Fethi M. Ramazanoğlu

Journal of Physics A Mathematical and TheoreticalFeb 17, 20092 citations

CSL Collapse Model Mapped with the Spontaneous Radiation

Kristian Piscicchia, Angelo Bassi, Catalina Curceanu +4 more

In this paper new upper limits on the parameters of the Continuous Spontaneous Localization (CSL) collapse model are extracted. To this end the X-ray emission data collected by the IGEX collaboration are analyzed and compared with the spectrum of the spontaneous photon emission process predicted by collapse models. This study allows to obtain the most stringent limits within a relevant range of the CSL model parameters, with respect to any other method. The collapse rate $\lambda$ and the correlation length $r_C$ are mapped, thus allowing to exclude a broad range of the parameter space.In this paper new upper limits on the parameters of the Continuous Spontaneous Localization (CSL) collapse model are extracted. To this end the X-ray emission data collected by the IGEX collaboration are analyzed and compared with the spectrum of the spontaneous photon emission process predicted by collapse models. This study allows to obtain the most stringent limits within a relevant range of the CSL model parameters, with respect to any other method. The collapse rate $\lambda$ and the correlation length $r_C$ are mapped, thus allowing to exclude a broad range of the parameter space.

arXiv:1710.01973EntropyJun 29, 201788 citations

On the Theory of Coherent Spontaneous Emission

Leonid A. Shelepin

Journal of Experimental and Theoretical PhysicsNov 1, 19685 citations

Novel CSL bounds from the noise-induced radiation emission from atoms

Sandro Donadi, Kristian Piscicchia, R. Del Grande +3 more

Abstract We study spontaneous radiation emission from matter, as predicted by the Continuous Spontaneous Localization (CSL) collapse model. We show that, in an appropriate range of energies of the emitted radiation, the largest contribution comes from the atomic nuclei. Specifically, we show that in the energy range $E\sim 10\,-\,10^{5}$ E ∼ 10 - 10 5 keV the contribution to the radiation emission from the atomic nuclei grows quadratically with the atomic number of the atom, overtaking the contribution from the electrons, which grows only linearly. This theoretical prediction is then compared with the data from a dedicated experiment performed at the extremely low background environment of the Gran Sasso underground National Laboratory, where the radiation emitted form a sample of Germanium was measured.As a result, we obtain the strongest bounds on the CSL parameters for $r_C\le 10^{-6}$ r C ≤ 10 - 6 m, improving the previous ones by more than an order of magnitude.Abstract We study spontaneous radiation emission from matter, as predicted by the Continuous Spontaneous Localization (CSL) collapse model. We show that, in an appropriate range of energies of the emitted radiation, the largest contribution comes from the atomic nuclei. Specifically, we show that in the energy range $$E\sim 10\,-\,10^{5}$$ E ∼ 10 - 10 5 keV the contribution to the radiation emission from the atomic nuclei grows quadratically with the atomic number of the atom, overtaking the contribution from the electrons, which grows only linearly. This theoretical prediction is then compared with the data from a dedicated experiment performed at the extremely low background environment of the Gran Sasso underground National Laboratory, where the radiation emitted form a sample of Germanium was measured.As a result, we obtain the strongest bounds on the CSL parameters for $$r_C\le 10^{-6}$$ r C ≤ 10 - 6 m, improving the previous ones by more than an order of magnitude.

arXiv:2107.11237The European Physical Journal CAug 1, 202130 citations

\lambda

and the correlation length

r_C

of the CSL model are obtained , with respect to any other method, over a broad range of the parameters space.

\lambda

and the correlation length

r_C

are mapped, thus allowing to exclude a broad range of the parameter space.

E\sim 10\,-\,10^{5}

E ∼ 10 - 10 5 keV the contribution to the radiation emission from the atomic nuclei grows quadratically with the atomic number of the atom, overtaking the contribution from the electrons, which grows only linearly. This theoretical prediction is then compared with the data from a dedicated experiment performed at the extremely low background environment of the Gran Sasso underground National Laboratory, where the radiation emitted form a sample of Germanium was measured.As a result, we obtain the strongest bounds on the CSL parameters for

r_C\le 10^{-6}

r C ≤ 10 - 6 m, improving the previous ones by more than an order of magnitude.