Results 51 to 60 of about 86,378 (158)

Poincaré Invariant Three-Body Scattering at Intermediate Energies

EPJ Web of Conferences, 2010
Relativistic Faddeev equations for three-body scattering are solved at arbitrary energies in terms of momentum vectors without employing a partial wave decomposition.
Polyzou W.N., Lin T., Elster Ch., Glöckle W.   +3 more
doaj   +1 more source

Entropy and Energy in Quantum Measurement

Entropy, 2006
On the basis of the classical axioms of non relativistic quantum mechanics, we develop a model for the interplay between energy and entropy in the process of quantum measurement and shed light on the scope of some of the axioms with regard to the ...
Andreas E. Schlatter
doaj   +1 more source

Foundations of the Quaternion Quantum Mechanics

Entropy, 2020
We show that quaternion quantum mechanics has well-founded mathematical roots and can be derived from the model of the elastic continuum by French mathematician Augustin Cauchy, i.e., it can be regarded as representing the physical reality of elastic ...
Marek Danielewski, Lucjan Sapa
doaj   +1 more source

Energy-speed relationship of quantum particles challenges Bohmian mechanics. [PDF]

Nature
Sharoglazova V, Puplauskis M, Mattschas C, Toebes C, Klaers J.   +4 more
europepmc   +2 more sources

A Relativistic Coupled-Channel Formalism for the Pion Form Factor

EPJ Web of Conferences, 2010
The electromagnetic form factor of a confined quark-antiquark pair is calculated within the framework of point-form relativistic quantum mechanics. The dynamics of the exchanged photon is explicitly taken into account by treating the electromagnetic ...
Klink W.H., Fuchsberger K., Schweiger W., Biernat E.P.   +3 more
doaj   +1 more source

Spacetime Paths as a Whole

Quantum Reports, 2020
The mathematical similarities between non-relativistic wavefunction propagation in quantum mechanics and image propagation in scalar diffraction theory are used to develop a novel understanding of time and paths through spacetime as a whole.
Sky Nelson-Isaacs
doaj   +1 more source

The Relativistic Three-Body Bound State in Three-Dimensions

EPJ Web of Conferences, 2016
Studying of the relativistic three-body bound state in a three-dimensional (3D) approach is a necessary first step in a process to eventually perform scattering calculations at GeV energies, where partial-wave expansions are not useful.
Hadizadeh M. R., Elster Ch., Polyzou W. N.   +2 more
doaj   +1 more source

Direct observation of zitterbewegung in a Bose–Einstein condensate

New Journal of Physics, 2013
Zitterbewegung, a force-free trembling motion first predicted for relativistic fermions like electrons, was an unexpected consequence of the Dirac equation's unification of quantum mechanics and special relativity.
L J LeBlanc, M C Beeler, K Jiménez-García, A R Perry, S Sugawa, R A Williams, I B Spielman   +6 more
doaj   +1 more source

Derivation of Dirac equation from the stochastic optimal control principles of quantum mechanics

Scientific Reports
In this paper, we present a stochastic approach to relativistic quantum mechanics. We formulate the three fundamental principles of this theory and derive the Dirac equations based on them.
Vasil Yordanov
doaj   +1 more source

Unitarity constrains the quantum information metrics for particle interactions

Nuclear Physics B
Unitarity provides mathematical and physical constraints on quantum information systems. e.g., in entanglement swapping, unitarity requires the same von Neumann entanglement entropy generation for either a particle interaction or an act of measurement ...
Shanmuka Shivashankara, Hobbes Sprague
doaj   +1 more source