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目前显示的是标签为“Decoherence”的博文

Time Dependent Entropy and Decoherence in a Modified Quantum Damped Harmonic Oscillator

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=52402#.VJOW_cCAM4 Author(s)    F. B. Pelap 1* , A. Fomethe 1 , A. J. Fotue 2 , M. P. Djemmo Tabue 1,2 Affiliation(s) 1 Laboratoire de Mécanique et de Modélisation des Systèmes Physiques (L2MSP), Faculté des Sciences, Université de Dschang, Dschang, Cameroon . 2 Laboratory of Mesoscopy and Multilayers Structures, Faculty of Science, University of Dschang, Dschang, Cameroon . ABSTRACT The time dependence of probability and Shannon entropy of a modified damped harmonic oscillator is studied by using single and double Gaussian wave functions through the Feynman path method. We establish that the damped coefficient as well as t...

Physics in Discrete Spaces: On Quantum Theory

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=49266#.VJD-OMnQrzE Author(s)    Pierre Peretto Affiliation(s) Laboratory of Physics and Modelling of Condensed Matter CNRS—Lpmmc, Grenoble, France . ABSTRACT In this article we show that quantum physics is a straightforward and comprehensive consequence of the model of discrete space-time that we have put forward in [1] . We first introduce the concept of coherent domains and give a proof of the various postulates and principles that form the basis of one-particle quantum systems. Then we consider how spin-statistic theorem and the formalism of second quantization, that are prerequisites for a description of many-particles s...

On Some Questions of C. Ampadu Associated with the Quantum Random Walk

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=51264#.VGGfG2fHRK0 Author(s) Clement Ampadu Affiliation(s) 31 Carrolton Road, Boston, Massachusetts, 02132, USA . ABSTRACT We review (not exhaustively) the quantum random walk on the line in various settings, and propose some questions that we believe have not been tackled in the literature. In a sense, this article invites the readers (beginner, intermediate, or advanced), to explore the beautiful area of quantum random walks. KEYWORDS Quantum Walk , Decoherence , Entanglement , Phase Parameters , Localization , Disorder , Inhomogeneity , Memory ...