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Depicting qudit quantum mechanics and mutually unbiased qudit theories [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2014
We generalize the ZX calculus to quantum systems of dimension higher than two. The resulting calculus is sound and universal for quantum mechanics. We define the notion of a mutually unbiased qudit theory and study two particular instances of these ...
André Ranchin
doaj   +4 more sources

Quantum–Classical Mechanics and the Franck–Condon Principle

open access: yesComputer Sciences & Mathematics Forum, 2023
Quantum–classical mechanics and the Franck–Condon principle related to quantum mechanics are discussed as two alternative theoretical approaches to molecular optical spectroscopy.
Vladimir V. Egorov
doaj   +1 more source

QUANTUM COMPUTING [PDF]

open access: yesJournal of Engineering Science (Chişinău), 2021
The quantum computer, is a "supercomputer" that relies on the phenomena of quantum mechanics to perform operations on data. Object of suppositions, sometimes far- fetched, quantum mechanics gave birth to the quantum computer, a machine capable of ...
BĂJENESCU, Titu-Marius I.
doaj   +1 more source

On tests of the quantum nature of gravitational interactions in presence of non-linear corrections to quantum mechanics [PDF]

open access: yesQuantum, 2023
When two particles interact primarily through gravity and follow the laws of quantum mechanics, the generation of entanglement is considered a hallmark of the quantum nature of the gravitational interaction.
Giovanni Spaventa   +2 more
doaj   +1 more source

Quantum Inequalities in Quantum Mechanics [PDF]

open access: yesAnnales Henri Poincaré, 2005
We study a phenomenon occuring in various areas of quantum physics, in which an observable density (such as an energy density) which is classically pointwise nonnegative may assume arbitrarily negative expectation values after quantisation, even though the spatially integrated density remains nonnegative.
Eveson, Simon P.   +2 more
openaire   +2 more sources

Why the future cannot be open in the quantum world

open access: yesPrincipia: An International Journal of Epistemology, 2022
In this study, I argue that the future is not open if quantum mechanics is complete. An open future means that the value observed when measuring a physical quantity in the future is not determined.
Kunihisa Morita
doaj   +1 more source

Indistinguishability and Counting: Teaching the role of different interpretations in Quantum Mechanics [PDF]

open access: yesRevista Brasileira de Ensino de Física, 2021
The theme of indistinguishability in the context of Quantum Mechanics as opposed to a distinguishability in the context of Classical Mechanics has been treated for almost a century in terms of an essential difference between the way of counting in ...
O.L.S. Filho, Marcello Ferreira
doaj   +1 more source

Renormalization in quantum mechanics [PDF]

open access: yesPhysical Review D, 1993
We implement the concept of Wilson renormalization in the context of simple quantum mechanical systems. The attractive inverse square potential leads to a $\b$ function with a nontrivial ultraviolet stable fixed point and the Hulthen potential exhibits the crossover phenomenon.
Gupta, K. S., Rajeev, S. G.
openaire   +3 more sources

NONCOMMUTATIVE QUANTUM MECHANICS AND QUANTUM COSMOLOGY [PDF]

open access: yesInternational Journal of Modern Physics A, 2009
We present a phase-space noncommutative version of quantum mechanics and apply this extension to Quantum Cosmology. We motivate this type of noncommutative algebra through the gravitational quantum well (GQW) where the noncommutativity between momenta is shown to be relevant. We also discuss some qualitative features of the GQW such as the Berry phase.
Bastos, Catarina   +3 more
openaire   +3 more sources

Foundations of Quantum Mechanics

open access: yesEncyclopedia, 2022
Quantum mechanics is a mathematical formalism that models the dynamics of physical objects. It deals with the elementary constituents of matter (atoms, subatomic and elementary particles) and of radiation.
Salim Yasmineh
doaj   +1 more source

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