# CSL Collapse Model Mapped with the Spontaneous Radiation

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## Abstract

**:**

## 1. The CSL Collapse Model

## 2. The Collapse Rate Parameter $\mathbf{\lambda}$

## 3. A New Limit on $\mathbf{\lambda}$

#### 3.1. The Data Analysis: Procedure and Results

## 4. Mapping CSL Parameters Space

## 5. Conclusions and Perspectives

- the non-mass proportional model for a white noise scenario can be excluded by our analysis,
- the higher value on $\lambda $ [11] can be excluded for a white noise scenario, in both mass proportional and non-mass proportional models,
- the measurement of the spontaneous radiation allows the obtainment of the most stringent limits on the CSL collapse model parameters, with respect to any other method, in a broad range of the parameter space (see also Ref. [22] for comparison).

## Acknowledgments

## Author Contributions

## Conflicts of Interest

## References

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**Figure 2.**Mapping of the $\lambda -{r}_{C}$ Continuous Spontaneous Localization (CSL) parameters: the originally proposed theoretical values (GRW, Adler) are shown as black points; the region excluded by theory (theory) is represented in gray. The excluded region according to our analysis is shown in cyan for the non-mass proportional case (n-m-p) and in magenta for the mass proportional case (m-p).

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**MDPI and ACS Style**

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.
https://doi.org/10.3390/e19070319

**AMA Style**

Piscicchia K, Bassi A, Curceanu C, Grande RD, Donadi S, Hiesmayr BC, Pichler A.
CSL Collapse Model Mapped with the Spontaneous Radiation. *Entropy*. 2017; 19(7):319.
https://doi.org/10.3390/e19070319

**Chicago/Turabian Style**

Piscicchia, Kristian, Angelo Bassi, Catalina Curceanu, Raffaele Del Grande, Sandro Donadi, Beatrix C. Hiesmayr, and Andreas Pichler.
2017. "CSL Collapse Model Mapped with the Spontaneous Radiation" *Entropy* 19, no. 7: 319.
https://doi.org/10.3390/e19070319