Operational quantum mechanics, quantum axiomatics and quantum structures Vrije Universiteit Brussel
This is an invited contribution for a prestigious compendium on quantum physics.
Publicaties
Quantum Structures in Human Decision-making: Towards Quantum Expected Utility Vrije Universiteit Brussel
Ellsberg thought experiments and empirical confirmation of Ellsberg preferences pose serious challenges to subjective expected utility theory (SEUT). We have recently elaborated a quantum-theoretic framework for human decisions under uncertainty which satisfactorily copes with the Ellsberg paradox and other puzzles of SEUT. We apply here the quantum-theoretic framework to the Ellsberg two-urn example, showing that the paradox can be explained ...
Finite element analysis of quantum states in layered quantum semiconductor structures with band nonparabolicity effect Universiteit Gent
Synthesis, Crystal Structures, Fluorescence and Quantum Chemical Investigations of some Multi-Substituted Quinoline Derivatives KU Leuven
Starting from eugenol (4-allyl-2-methoxyphenol) three new quinoline derivatives, namely 5-bromo-7-(carboxymethoxy)-6-hydroxy-1-methylquinolin-1-ium-3-sulfonate (Q2, C12H10BrNO7S), 5-amino-7-(carboxymethoxy)-6-hydroxyquinolin-1-ium-3-sulfonate (Q4, C11H10N2O7S) and 7-(carboxymethoxy)-5,6-dihydroxylquinolin-1-ium-3-sulfonate (Q6, C11H9NO8), have been synthesized and crystallised as dihydrate. The best planes through the quinoline ring and the ...
A Possible Operational Motivation for the Orthocomplementation in Quantum Structures. Vrije Universiteit Brussel
In the foundations of quantum mechanics Gleason's theorem dictates the uniqueness of the state transition probability via the inner product of the corresponding state vectors in Hilbert space, independent of which measurement context induces this transition. We argue that the state transition probability should not be regarded as a secondary concept which can be derived from the structure on the set of states and properties, but instead should ...
Design and Optical Characterization of Novel InGaN/GaN Multiple Quantum Well Structures by Metal Organic Vapor Phase Epitaxy KU Leuven
Various multiple quantum well structures with three main geometries of triangular, isosceles trapezoidal, and right-angled trapezoidal shape have been designed and fabricated on 4-in. sapphire substrates by metal organic vapor phase epitaxy. Photoluminescence measurements reveal the influence of the quantum well structures on the emission wavelength and the internal quantum efficiency. We observe less decrease in the internal quantum efficiency ...
Identifying quantum structures in the Ellsberg paradox Vrije Universiteit Brussel
Empirical evidence has confirmed that quantum effects systematically occur also outside the microscopic domain, while quantum structures satisfactorily model various situations in several areas of science, including biological, cognitive and social processes. In this paper, we elaborate a quantum mechanical model which faithfully describes the 'Ellsberg paradox' in economics, showing that the mathematical formalism of quantum mechanics is ...
Quantum structures in economics: The Ellsberg paradox Vrije Universiteit Brussel
The \emph{expected utility hypothesis} and \emph{Savage's Sure-Thing Principle} are violated in real life decisions, as shown by the \emph{Allais} and \emph{Ellsberg paradoxes}. The popular explanation in terms of \emph{ambiguity aversion} is not completely accepted. As a consequence, uncertainty is still problematical in economics. To overcome these difficulties a distinction between \emph{risk} and \emph{ambiguity} has been introduced which ...
Quantum probabilistuc structures in competing lizard communities Vrije Universiteit Brussel
Despite predictive success, population dynamics and evolutionary game theory [1, 2] still pose fun- damental problems. Violation of the competitive exclusion principle in plankton communities pro- vides an example. A promising solution of this “paradox of the plankton” [3] comes from theories involving cyclic competition [4–6], an evolution- ary analogue of the classical rock-paper-scissors (RPS) game. However, modeling probabilistic RPS ...
Quantum superpositions and the representation of physical reality beyond measurement outcomes and mathematical structures Vrije Universiteit Brussel
In this paper we intend to discuss the importance of providing a physical representation of quantum superpositions which goes beyond the mere reference to mathematical structures and measurement outcomes. This proposal goes in the opposite direction to the project present in orthodox contemporary philosophy of physics which attempts to “bridge the gap” between the quantum formalism and common sense “classical reality”—precluding, right from ...