Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

# CSL Collapse Model Mapped with the Spontaneous Radiation

Version 1 : Received: 30 April 2017 / Approved: 1 May 2017 / Online: 1 May 2017 (11:02:50 CEST)

A peer-reviewed article of this Preprint also exists.

Piscicchia, K.; Bassi, A.; Curceanu, C.; Grande, R.D.; Donadi, S.; Hiesmayr, B.C.; Pichler, A. CSL Collapse Model Mapped with the Spontaneous Radiation. Entropy 2017, 19, 319. Piscicchia, K.; Bassi, A.; Curceanu, C.; Grande, R.D.; Donadi, S.; Hiesmayr, B.C.; Pichler, A. CSL Collapse Model Mapped with the Spontaneous Radiation. Entropy 2017, 19, 319.

Journal reference: Entropy 2017, 19, 319
DOI: 10.3390/e19070319

## Abstract

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.

## Subject Areas

quantum mechanics; the measurement problem; collapse models; X-rays

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