Gourt > Science > Physics > Quantum Mechanics (24)
Quantum mechanics is a fundamental branch of theoretical physics that replaces classical mechanics and classical electromagnetism at the atomic and subatomic levels. It is the underlying mathematical framework of many fields of physics and chemistry, including condensed matter physics, atomic physics, molecular physics, computational chemistry, quantum chemistry, particle physics, and nuclear physics. Along with general relativity, quantum mechanics is one of the pillars of modern physics.
Introduction
The term quantum (Latin, "how much") refers to discrete units that the theory assigns to certain physical quantities, such as the energy of an atom at rest (see Figure 1, at right). The discovery that waves could be measured in particle-like small packets of energy called quanta led to the branch of physics that deals with atomic and subatomic systems which we today call Quantum Mechanics. The foundations of quantum mechanics were established during the first half of the 20th century by Max Planck, Albert Einstein, Niels Bohr, Werner Heisenberg, Erwin Schrödinger, Max Born, John von Neumann, Paul Dirac, Wolfgang Pauli and others. Some fundamental aspects of the theory are still actively studied. More on [ Quantum mechanics ]
Condensed Matter :: Physics
Electromagnetism :: Physics
Nuclear Physics
Optics :: Physics
Special Relativity
Quantum error correction on infinite-dimensional Hilbert spaces
Cedric Beny, Achim Kempf, and David W. Kribs We present a generalization of quantum error correction to infinite-dimensional Hilbert spaces. We find that, under relatively mild conditions, much of the structure known from systems in finite-dimensional Hilbert spaces carries straightforwardly over to infinite dimensions. We also find that, at l ... [J. Math. Phys. 50, 062108 (2009)] published Fri Jun 26, 2009.
Inverse momentum expectation values for hydrogenic systems
R. Delbourgo and D. Elliott By using the Fourier transforms of the general hydrogenic bound state wave functions (as ultraspherical polynomials), one may find expectation values of arbitrary functions of momentum p. In this manner the effect of a reciprocity perturbation b/p can be evaluated for all hydrogenic states. ... [J. Math. Phys. 50, 062107 (2009)] published Tue Jun 23, 2009.
Cones of positive maps and their duality relations
Lukasz Skowronek, Erling Stormer, and Karol Zyczkowski The structure of cones of positive and k-positive maps acting on a finite-dimensional Hilbert space is investigated. Special emphasis is given to their duality relations to the sets of superpositive and k-superpositive maps. We characterize k-positive and k-superpositive maps with regard to their pr ... [J. Math. Phys. 50, 062106 (2009)] published Fri Jun 19, 2009.
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100th Anniversary Of Quantum Theory - A scientific article about a new approach in quantum theory.
An introduction to Quantized Lie Groups and Algebras - We give a selfcontained introduction to the theory of quantum groups according to Drinfeld highlighting the formal aspects as well as the applications to the Yang-Baxter equation and representation theory. Introductions to Hopf algebras, Poisson structures and deformation quantization are also provided.
Encyclopedia.com - Quantum Theory - Includes a basic introduction to what this theory is, and links to relevant journal and magazine articles.
Meta Description: [ quantum theory modern physical theory concerned with the emission and absorption of energy by matter and with the motion of material particles; the q ]
Eurotechnology Japan: Quantum Device Simulations - Visualization and simulation of electron waves propagating through quantum device structures demonstrating solutions to the time-dependent Schroedinger equation
Meta Description: [ Visualizing electron waves in
nano electronic devices: solving and visualizing the time-dependent Schroedinger equation ]
Fermions and Bosons - A set of notes on fermions and bosons, including a review of angular momentum in quantum mechanics.
Meta Description: [ Problems ]
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Grains of Mystery - A primer for the non-professional interested in learning about the principles of quantum physics without all the math.
How Quantum Entanglement Works - Describes Quantum Entanglement without mathematics, starting from first principles.
Meta Description: [ how quantum entanglement works ]
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Intro to Quantum Mechanics - This page is intended to give an ordinary person a brief overview of the importance and wonder of quantum mechanics.
Mona Lisa - ineffable smile of quantum mechanics - The portrait of Mona Lisa is scrutinized with reference to quantum mechanics
Parity - An overview of Parity in quantum mechanics and of the ways to break quantum mechanical symmetry.
Path Integral Approach to Quantum Mechanics - An intuitive description of Feynman's version of quantum mechanics written in poetic language.
Path Integral Methods and Applications - These lectures are intended as an introduction to the technique of path integrals and their applications in physics. The audience is mainly first-year graduate students, and it is assumed that the reader has a good foundation in quantum mechanics.
Physics Bookshelf - Quantum Mechanics - A collection of articles explaining basic concepts in quantum mechanics.
QMvideos - Article which teaches the basics of quantum mechanics with help of digital videos showing the time evolution of wave packets in various potentials, with interference, tunneling.
Quantum and Foundational Physics (A. Zeilinger) - The website of the group around Prof. Zeilinger working at the university of Vienna in the field of Quantum Physics.
Meta Description: [ The research of the Institute for Experimental
Physics of Prof. Anton Zeilinger at the University of Vienna, Austria focuses
on the foundations of quantum physics. The research group aims to demonstrate
and test fundamental counter-intuitive quantum phenomena through experiment. ]
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Quantum Chaos - An essay on the effects Chaos theory would have on traditional quantum mechanics.
Quantum Communication - A short introduction titled Quantum communication moves into the unknown by David Deutsch and Artur Ekert.
Quantum Cryptography - A recent overview of quantum cryptography.
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Quantum Cryptography in Norway - Application-oriented research at NTNU, Trondheim and Telenor, Oslo
Quantum Experiments and the Foundations of Physics - Information about experiments performed in Austria.
Meta Description: [ The research of the Institute for Experimental
Physics of Prof. Anton Zeilinger at the University of Vienna, Austria focuses
on the foundations of quantum physics. The research group aims to demonstrate
and test fundamental counter-intuitive quantum phenomena through experiment. ]
Quantum Information Dynamics - An overview of work done at Caltech on quantum information dynamics - the study of quantum Information Theory and its application to processes involving the interaction of qubits: the quantum carriers of information
Quantum Mechanics - A survey of quantum mechanics from the Stanford Encyclopedia of Philosophy.
Quantum Optics and Foundation of Physics - Pages and Links about Quantum Optics. Created by the group around Anton Zeilinger in Vienna.
Meta Description: [ The research of the Institute for Experimental
Physics of Prof. Anton Zeilinger at the University of Vienna, Austria focuses
on the foundations of quantum physics. The research group aims to demonstrate
and test fundamental counter-intuitive quantum phenomena through experiment. ]
Quantum Physics - A qualitative description of the key aspects, including Heisenburg's Uncertainty Principle, wave-particle duality and related theories.
Meta Description: [ An introduction into Quantum physics ]
Quantum Physics Online - A series of Java applets illustrating solutions to basic problems in this subject.
Quantum Physics Primer - Describes some basic concepts of quantum physics.
Meta Description: [ Quantum Physics ]
Student Understanding of Quantum Mechanics - A set of lectures and reports outlining methods of teaching introductory quantum mechanics to a wide range of students.
The EPR Paradox and Inequality Principle of Bell - A short article from the USENET Physics FAQ.
Topics in Modern Quantum Optics - This is the written version of lectures presented at the 17th Symposium on Theoretical Physics covering various topics in quantum optics.
Virtual Journal Of Quantum Information - This monthly virtual journal contains articles that have appeared in one of the participating source journals and that fall within a number of contemporary topical areas in quantum information.
What is Quantum Physics? - History and explanation of quantum physics / quantum mechanics.
Meta Description: [ 1st place Quantum Physics site by Jim Tucek ]
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What is quantum tunneling? This video is an adaptation of an earlier piece of mine--Perspective on quantum mechanical tunneling. That film, however, was designed for a unique audience, and I felt its overall length was limiting its appeal here. So I've repackaged it as one of my weekly postings. I Hope you enjoy. |
