Continuous spontaneous localization wave function collapse model as a mechanism for the emergence of cosmological asymmetries in inflation

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.

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

The European Physical Journal C ◽

10.1140/epjc/s10052-021-09556-0 ◽

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.

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Hunting the "impossible atoms" Pauli exclusion principle violation and spontaneous collapse of the wave function at test

International Journal of Quantum Information ◽

10.1142/s0219749915600126 ◽

2014 ◽

Vol 12 (07n08) ◽

pp. 1560012

Author(s):

Catalina Curceanu ◽

Sergio Bartalucci ◽

Angelo Bassi ◽

Sergio Bertolucci ◽

Carolina Berucci ◽

...

Keyword(s):

Wave Function ◽

Foundations Of Quantum Mechanics ◽

Pauli Exclusion Principle ◽

Exclusion Principle ◽

X Rays ◽

Experimental Apparatus ◽

Lively Debate ◽

Spontaneous Localization ◽

Continuous Spontaneous Localization ◽

Actual Limit

The Pauli exclusion principle (PEP) and, more generally, the spin-statistics connection, are at the very basis of our understanding of matter, life and Universe. The PEP spurs, presently, a lively debate on its possible limits, deeply rooted in the very foundations of Quantum Mechanics. It is, therefore, extremely important to test the limits of its validity. The Violation of the PEP (VIP) experiment established the best limit on the probability that PEP is violated by electrons, using the method of searching for PEP forbidden atomic transitions in copper. We describe the experimental method, the obtained results, and plans to go beyond the actual limit by upgrading the experimental apparatus. We discuss the possibility of using a similar experimental technique to search for X-rays as a signature of the spontaneous collapse of the wave function predicted by continuous spontaneous localization (CSL) theories.

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STOCHASTIC DIFFERENTIAL EQUATIONS FOR THE CONTINUOUS SPONTANEOUS LOCALIZATION MODEL

Modern Physics Letters A ◽

10.1142/s0217732300001997 ◽

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.

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The X-ray machine for the examination of quantum mechanics

International Journal of Quantum Information ◽

10.1142/s0219749916400177 ◽

2016 ◽

Vol 14 (04) ◽

pp. 1640017 ◽

Cited By ~ 2

Author(s):

Catalina Curceanu ◽

Sergio Bartalucci ◽

Angelo Bassi ◽

Massimiliano Bazzi ◽

Sergio Bertolucci ◽

...

Keyword(s):

Wave Function ◽

Quantum Mechanics ◽

Pauli Exclusion Principle ◽

Exclusion Principle ◽

X Rays ◽

X Ray ◽

The Future ◽

Spontaneous Localization ◽

Continuous Spontaneous Localization ◽

Future Plans

By performing X-rays measurements in the underground laboratory of Gran Sasso, LNGS-INFN, we test a basic principle of quantum mechanics: the Pauli exclusion principle (PEP). In the future, we aim to use a similar experimental technique to search for X-rays as a signature of the spontaneous collapse of the wave function predicted by continuous spontaneous localization theories. We present the achieved results of the VIP experiment and the future plans to gain two orders of magnitude in testing PEP with the recently VIP2 setup installed at Gran Sasso.

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