scholarly journals Beyond Quantum Mechanics? Hunting the `Impossible' Atoms --- Pauli Exclusion Principle Violation and Spontaneous Collapse of the Wave Function at Test

2015 ◽  
Vol 46 (1) ◽  
pp. 147 ◽  
Author(s):  
K. Piscicchia ◽  
C. Curceanu ◽  
S. Bartalucci ◽  
A. Bassi ◽  
S. Bertolucci ◽  
...  
Keyword(s):  
Wave Function ◽  
Quantum Mechanics ◽  
Pauli Exclusion Principle ◽  
Exclusion Principle

The X-ray machine for the examination of quantum mechanics

2016 ◽  
Vol 14 (04) ◽  
pp. 1640017 ◽  
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.

scholarly journals X rays on quantum mechanics: Pauli Exclusion Principle and collapse models at test

2015 ◽  
Vol 631 ◽  
pp. 012068 ◽  
Author(s):  
C Curceanu ◽  
S Bartalucci ◽  
A Bassi ◽  
S Bertolucci ◽  
C Berucci ◽  
...  
Keyword(s):  
Quantum Mechanics ◽  
Pauli Exclusion Principle ◽  
Exclusion Principle ◽  
X Rays ◽  
Collapse Models

scholarly journals VIP: AN EXPERIMENT TO SEARCH FOR A VIOLATION OF THE PAULI EXCLUSION PRINCIPLE

2007 ◽  
Vol 22 (02n03) ◽  
pp. 242-248 ◽  
Author(s):  
E. Milotti ◽  
S. Bartalucci ◽  
S. Bertolucci ◽  
M. Bragadireanu ◽  
M. Cargnelli ◽  
...  
Keyword(s):  
Quantum Mechanics ◽  
Basic Principle ◽  
Pauli Exclusion Principle ◽  
Experimental Results ◽  
Underground Laboratory ◽  
Exclusion Principle

The Pauli Exclusion Principle is a basic principle of Quantum Mechanics, and its validity has never been seriously challenged. However, given its fundamental standing, it is very important to check it as thoroughly as possible. Here we describe the VIP (VIolation of the Pauli exclusion principle) experiment, an improved version of the Ramberg and Snow experiment (E. Ramberg and G. Snow, Phys. Lett. B238, 438 (1990)); VIP has just completed the installation at the Gran Sasso underground laboratory, and aims to test the Pauli Exclusion Principle for electrons with unprecedented accuracy, down to β2/2 ≈ 10-30 - 10-31. We report preliminary experimental results and briefly discuss some of the implications of a possible violation.

Quantum Mechanics and the Periodic Table

2019 ◽  
Author(s):  
Eric Scerri
Keyword(s):  
Quantum Mechanics ◽  
Quantum Theory ◽  
Periodic Table ◽  
Chemical Properties ◽  
Pauli Exclusion Principle ◽  
Niels Bohr ◽  
Exclusion Principle ◽  
Old Quantum Theory ◽  
Set Up ◽  
Three Body

In chapter 7, the influence of the old quantum theory on the periodic system was considered. Although the development of this theory provided a way of reexpressing the periodic table in terms of the number of outer-shell electrons, it did not yield anything essentially new to the understanding of chemistry. Indeed, in several cases, chemists such as Irving Langmuir, J.D. Main Smith, and Charles Bury were able to go further than physicists in assigning electronic configurations, as described in chapter 8, because they were more familiar with the chemical properties of individual elements. Moreover, despite the rhetoric in favor of quantum mechanics that was propagated by Niels Bohr and others, the discovery that hafnium was a transition metal and not a rare earth was not made deductively from the quantum theory. It was essentially a chemical fact that was accommodated in terms of the quantum mechanical understanding of the periodic table. The old quantum theory was quantitatively impotent in the context of the periodic table since it was not possible to even set up the necessary equations to begin to obtain solutions for the atoms with more than one electron. An explanation could be given for the periodic table in terms of numbers of electrons in the outer shells of atoms, but generally only after the fact. But when it came to trying to predict quantitative aspects of atoms, such as the ground-state energy of the helium atom, the old quantum theory was quite hopeless. As one physicist stated, “We should not be surprised . . . even the astronomers have not yet satisfactorily solved the three-body problem in spite of efforts over the centuries.” A succession of the best minds in physics, including Hendrik Kramers, Werner Heisenberg, and Arnold Sommerfeld, made strenuous attempts to calculate the spectrum of helium but to no avail. It was only following the introduction of the Pauli exclusion principle and the development of the new quantum mechanics that Heisenberg succeeded where everyone else had failed.

scholarly journals Experimental tests of quantum mechanics: Pauli Exclusion Principle Violation (the VIP experiment) and future perspectives

2011 ◽  
Vol 17 ◽  
pp. 40-48 ◽  
Author(s):  
C. Curceanu (Petrascu) ◽  
S. Bartalucci ◽  
S. Bertolucci ◽  
M. Bragadireanu ◽  
M. Cargnelli ◽  
...  
Keyword(s):  
Quantum Mechanics ◽  
Experimental Tests ◽  
Pauli Exclusion Principle ◽  
Exclusion Principle ◽  
Future Perspectives

Experimental tests of quantum mechanics: Pauli exclusion principle violation and spontaneous collapse models

2012 ◽  
Author(s):  
Catalina Curceanu ◽  
S. Bartalucci ◽  
A. Bassi ◽  
S. Bertolucci ◽  
M. Bragadireanu ◽  
...  
Keyword(s):  
Quantum Mechanics ◽  
Experimental Tests ◽  
Pauli Exclusion Principle ◽  
Exclusion Principle ◽  
Collapse Models

Macroscopic Manifestations of Quantum Mechanics

2017 ◽  
Author(s):  
Frank S. Levin
Keyword(s):  
Quantum Mechanics ◽  
Neutron Stars ◽  
Stellar Evolution ◽  
White Dwarf ◽  
Pauli Exclusion Principle ◽  
Exclusion Principle ◽  
Energy Sources ◽  
Maximum Height ◽  
Quantum Behavior ◽  
The Way

Some possibly unexpected macroscopic manifestations of quantum mechanics are described in Chapter 12. The first is a laser, a device both man-made and one that relies on phase effects to achieve its potent beam. How this is done is illustrated by a diagram. The next is an estimate of the maximum height of a mountain, whose result was originally shown to rely on quantum mechanics. That result, approximately 30 km, is followed by showing that white dwarf and neutron stars are each gigantic manifestations of the Pauli Exclusion Principle, the first mainly consisting of carbon nuclei and electrons, the second mainly of neutrons. In each case, the primary constituent is a fermion, whose quantum behavior is governed by the Exclusion Principle. Along the way to showing this is a review of stellar evolution and energy sources. The final example is the first quantum machine, which is barely macroscopic.

scholarly journals Experimental tests of Quantum Mechanics: from Pauli Exclusion Principle Violation to spontaneous collapse models

2012 ◽  
Vol 361 ◽  
pp. 012006 ◽  
Author(s):  
C Curceanu (Petrascu) ◽  
S Bartalucci ◽  
A Bassi ◽  
S Bertolucci ◽  
M Bragadireanu ◽  
...  
Keyword(s):  
Quantum Mechanics ◽  
Experimental Tests ◽  
Pauli Exclusion Principle ◽  
Exclusion Principle ◽  
Collapse Models

Quantum mechanics under X-rays in the Gran Sasso underground laboratory

2017 ◽  
Vol 15 (08) ◽  
pp. 1740004 ◽  
Author(s):  
Catalina Curceanu ◽  
Diana Sirghi ◽  
Florin Sirghi ◽  
Sergio Bartalucci ◽  
Massimiliano Bazzi ◽  
...  
Keyword(s):  
Quantum Mechanics ◽  
Measurement Problem ◽  
Pauli Exclusion Principle ◽  
Underground Laboratory ◽  
Exclusion Principle ◽  
X Rays ◽  
X Ray ◽  
Localization Model ◽  
Continuous Spontaneous Localization ◽  
Broad Region

By performing X-ray measurements in the “cosmic silence” of the underground laboratory of Gran Sasso, LNGS-INFN, we test a basic principle of quantum mechanics: the Pauli Exclusion Principle (PEP) for electrons. We present the achieved results of the VIP experiment and the ongoing VIP2 measurement aiming to gain two orders of magnitude improvement in testing PEP. X-ray emission can also be used to put strong constraints on the parameters of the Continuous Spontaneous Localization Model, which was introduced as a possible solution to the measurement problem in Quantum Mechanics. A Bayesian analysis of the data collected by IGEX will be presented, which allows to exclude a broad region of the parameter space which characterizes this model.

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