scholarly journals Experimental constrains on the Continuous Spontaneous Localization model from spontaneous radiation emission

2018 ◽  
Author(s):  
kristian Piscicchia ◽  
Angelo Bassi ◽  
Catalina Curceanu ◽  
Sandro Donadi ◽  
Andreas Pichler ◽  
...  
Keyword(s):  
Spontaneous Radiation ◽  
Radiation Emission ◽  
Localization Model ◽  
Spontaneous Localization ◽  
Continuous Spontaneous Localization

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

2021 ◽  
Vol 81 (8) ◽  
Author(s):  
Sandro Donadi ◽  
Kristian Piscicchia ◽  
Raffaele Del Grande ◽  
Catalina Curceanu ◽  
Matthias Laubenstein ◽  
...  
Keyword(s):  
Theoretical Prediction ◽  
Energy Range ◽  
National Laboratory ◽  
Spontaneous Radiation ◽  
Radiation Emission ◽  
Atomic Nuclei ◽  
Collapse Model ◽  
Order Of Magnitude ◽  
Spontaneous Localization ◽  
Continuous Spontaneous Localization

AbstractWe 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.

scholarly journals CSL Collapse Model Mapped with the Spontaneous Radiation

2017 ◽  
Author(s):  
Kristian Piscicchia ◽  
Angelo Bassi ◽  
Catalina Curceanu ◽  
Raffaele Del Grande ◽  
Sandro Donadi ◽  
...  
Keyword(s):  
Photon Emission ◽  
Model Parameters ◽  
Spontaneous Radiation ◽  
Emission Data ◽  
Upper Limits ◽  
Collapse Model ◽  
Collapse Models ◽  
Spontaneous Localization ◽  
Continuous Spontaneous Localization ◽  
Relevant Range

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.

STOCHASTIC DIFFERENTIAL EQUATIONS FOR THE CONTINUOUS SPONTANEOUS LOCALIZATION MODEL

2000 ◽  
Vol 15 (30) ◽  
pp. 1833-1842
Author(s):  
L. F. SANTOS ◽  
C. O. ESCOBAR
Keyword(s):  
Wave Function ◽  
Differential Equations ◽  
Stochastic Differential Equations ◽  
Quantum System ◽  
Open Quantum System ◽  
Random Potential ◽  
Free Particle ◽  
Localization Model ◽  
Spontaneous Localization ◽  
Continuous Spontaneous Localization

We extend Vink's method [J. C. Vink, Phys. Rev.A48, 1808 (1993)], developed for an isolated quantum system, to an open quantum system consisting of a free particle interacting with its surrounding through a random potential, which causes the spontaneous localization of its wave function. We then obtain the stochastic differential equations (SDE) underlying its evolution. These SDE help us to observe the effects of the environment upon the movement of the particle.

scholarly journals Non-interferometric test of the continuous spontaneous localization model based on rotational optomechanics

2018 ◽  
Vol 20 (8) ◽  
pp. 083022 ◽  
Author(s):  
Matteo Carlesso ◽  
Mauro Paternostro ◽  
Hendrik Ulbricht ◽  
Andrea Vinante ◽  
Angelo Bassi
Keyword(s):  
Model Based ◽  
Localization Model ◽  
Spontaneous Localization ◽  
Continuous Spontaneous Localization
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