Beyond quantum mechanics? Hunting the 'impossible' atoms (Pauli Exclusion Principle violation and spontaneous collapse of the wave function at test)

Abstract

The development of mathematically complete and consistent models solving the so-called "measurement problem", strongly renewed the interest of the scientific community for the foundations of quantum mechanics, among these the Dynamical Reduction Models posses the unique characteristic to be experimentally testable. In the first part of the paper an upper limit on the reduction rate parameter of such models will be obtained, based on the analysis of the X-ray spectrum emitted by an isolated slab of germanium and measured by the IGEX experiment. The second part of the paper is devoted to present the results of the VIP (Violation of the Pauli exclusion principle) experiment and to describe its recent upgrade. The VIP experiment established a limit on the probability that the Pauli Exclusion Principle (PEP) is violated by electrons, using the very clean method of searching for PEP forbidden atomic transitions in copper.

References in corpus (9)

• Data Tables for Lorentz and CPT Violation
• Physics with the KLOE-2 experiment at the upgraded DA$\varphi$NE
• Test of CPT and Lorentz symmetry in entangled neutral kaons with the KLOE experiment
• The Low Energy Tagger for the KLOE-2 experiment
• QCALT: a tile calorimeter for KLOE-2 upgrade
• Measurement of the charged kaon lifetime with the KLOE detector
• Study of the $K_S{K}_L\to \pi \ell \nu 3{\pi }^0$ process for time reversal symmetry test at KLOE-2
• $K_S$ semileptonic decays and test of $\mathcal{C}\mathcal{P}\mathcal{T}$ symmetry with the KLOE detector
• Improved $K_S$ tagging procedure and its impact on physics at KLOE-2

Cited by in corpus (5)

• Spontaneous collapse: a solution to the measurement problem and a source of the decay in mesonic systems
• Particle mixing and the emergence of classicality: A spontaneous-collapse-model view
• High sensitivity tests of the Pauli Exclusion Principle with VIP2
• Observability of spontaneous collapse in flavor oscillations and its relation to the CP and CPT symmetries
• VIP-2 at LNGS: An experiment on the validity of the Pauli Exclusion Principle for electrons