Experimental search for the "impossible atoms" Pauli Exclusion Principle violation and spontaneous collapse of the wave function at test

7th International Workshop DICE2014 Spacetime – Matter – Quantum Mechanics

物理学;力学

Curceanu, C.^1,2,9 ; Bartalucci, S.^1 ; Bassi, A.^3 ; Bertolucci, S.^4 ; Berucci, C.^1,5 ; Bragadireanu, A.M.^1,2 ; Cargnelli, M.^5 ; Clozza, A.^1 ; De Paolis, L.^1 ; Di Matteo, S.^6 ; Donadi, S.^3 ; D'Uffizi, A.^1 ; Egger, J.-P.^7 ; Guaraldo, C.^1 ; Iliescu, M.^1 ; Ishiwatari, T.^5 ; Laubenstein, M.^8 ; Marton, J.^5 ; Milotti, E.^3 ; Pietreanu, D.^1,2 ; Piscicchia, K.^1,9 ; Ponta, T.^2 ; Sbardella, E.^1 ; Scordo, A.^1 ; Shi, H.^1 ; Sirghi, D.L.^1,2 ; Sirghi, F.^1,2 ; Sperandio, L.^1 ; Doce, O Vazquez^10 ; Zmeskal, J.^5

INFN, Laboratori Nazionali di Frascati, CP 13, Via E. Fermi 40, Frascati (Roma)

I-00044, Italy^1

Horia Hulubei National Institute of Physics and Nuclear Engineering, Str. Atomistilor no. 407, Bucharest - Magurele, Romania^2

Dipartimento di Fisica, Università di Trieste, INFN- Sezione di Trieste, 2 Via Valerio, Trieste

I-34127, Italy^3

CERN, Geneva 23

CH-1211, Switzerland^4

Stefan Meyer Institute for Subatomic Physics, Boltzmanngasse 3, Vienna

A-1090, Austria^5

Institut de Physique UMR CNRS-UR1 6251, Université de Rennes1, Rennes

F-35042, France^6

Institut de Physique, Université de Neuchâtel, 1 rue A.-L. Breguet, Neuchâtel

CH-2000, Switzerland^7

INFN, Laboratori Nazionali Del Gran Sasso, S.S. 17/bis, Assergi (AQ)

I-67010, Italy^8

Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi, Roma, Italy

(10) Excellence Cluster Universe, Technische Universität München, Garching, Germany^9

关键词: Active shielding;    Continuous spontaneous localizations;    Experimental techniques;    External electrons;    Orders of magnitude;    Pauli exclusion principle;    Pauli principle;    Upper limits;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/626/1/012027/pdf
DOI  :  10.1088/1742-6596/626/1/012027

学科分类：力学，机械学

来源: IOP

【 摘 要 】

Many experiments investigated the possible violation of the Pauli Exclusion Principle (PEP) since its discovery in 1925. The VIP(Violation of the Pauli Principle) experiment tested the PEP by measuring the probability for an external electron to be captured and undergo a 2p to 1s transition during its cascading process, with the 1s state already occupied by two electrons. This transition is forbidden by the PEP. The VIP experiment resulted in an upper limit for the probability of PEP violation of 4.7 × 10-29. Currently a setup for the follow up experiment VIP2 is under preparation. The goal of this experiment is to improve the upper limit for the violation of the PEP by two orders of magnitude, by using new X-ray detectors and by implementing an active shielding. We then present the idea of using an analogous experimental technique to search for X rays as a signature of the spontaneous collapse of the wave function, predicted by the continuous spontaneous localization theories, and discuss some very encouraging preliminary results.