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Topic: List of quantum field theories


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In the News (Thu 24 Dec 09)

  
  Quantum field theory - Wikipedia, the free encyclopedia
Quantum field theory originated in the problem of computing the energy radiated by an atom when it dropped from one quantum state to another of lower energy.
For example, in every quantum theory the global phase of the wave function is arbitrary and does not represent something physical, so the theory is invariant under a global change of phases (adding a constant to the phase of all wave functions, everywhere); this is a global symmetry.
In quantum electrodynamics this gauge field is the electromagnetic field.
en.wikipedia.org /wiki/Quantum_field_theory   (4428 words)

  
 Quantum field theory - Wikipedia   (Site not responding. Last check: 2007-10-13)
In particular, the quantum theory of the electromagnetic field, known as quantum electrodynamics, is one of the most well-tested and successful theories in physics.
It was discovered that quantum mechanical particles of the same species are indistinguishable, in the sense that the wavefunction of the entire system must be symmetric (bosons) or antisymmetric (fermions) when the coordinates of its consituent particles are exchanged.
The procedure by which quantum fields are constructed from individual particles was introduced by Dirac, and is (for historical reasons) known as second quantization[?].
wikipedia.findthelinks.com /qu/Quantum_field_theory.html   (1586 words)

  
 List of Publications by Iwo Bialynicki-Birula
Quantization of gauge theories, Bull.Acad.Polon.Sci.Cl.III 27, 249 (1979).
Field theory of photon dust, Acta Physica Polonica B 23, 553 (1992).
Quantum mechanics as a generalization of Nambu dynamics to the Weyl-Wigner formalism (with P.J.Morrison), Zeitschrift fuer Naturforschung 52a, 9 (1997).
www.cft.edu.pl /~birula/publ.html   (2428 words)

  
 Quantum Field Theory
Quantum field theory can be developed by adopting the path integral formulism as mentioned earlier, or by combining the field equation with canonical quantization as shown in the next sub-topic.
A renormalizable theory is one in which the details of a deeper scale are not needed to describe the physics at the present scale, save for a few experimentally measurable parameters (see more in the section about "Renormalizable Theories").
In quantum theory, the interaction between an electron and a magnetic field can be portrayed by the Feynman diagram in Figure 08a, which shows a photon from the magnetic field is absorbed by the electron and thus altered its trajectory.
universe-review.ca /R15-12-QFT.htm   (12353 words)

  
 Wikinfo | Quantum field theory   (Site not responding. Last check: 2007-10-13)
The fundamentals of quantum field theory were developed between the late 1920s and the 1950s, notably by Dirac, Pauli, Tomonaga, Schwinger, Feynman, and Dyson.
It was discovered that quantum mechanical particles of the same species are indistinguishable, in the sense that the wavefunction of the entire system must be symmetric (bosons) or antisymmetric (fermions) when the coordinates of its constituent particles are exchanged.
This is one of the many attempts to put quantum field theory on a firm mathematical footing.
www.wikinfo.org /wiki.php?title=Quantum_field_theory   (1137 words)

  
 Spacetime - General Relativity, Quantum Gravity, and the Existence of Time
A brief summary of Spacetime Theories at the beginning of the Third Millennium, and of the possibility that we live in an essentially atemporal universe.
For technical as well as for emotional reasons, many approaches to quantum gravity go out of their way to reinsert in the theory what GR is teaching us we should abandon: a preferred time.
Rovelli notes that: "Conventional field theories are not invariant under a diffeomorphism acting on the dynamical fields.
ws5.com /spacetime   (7532 words)

  
 Topological Quantum Field Theory
Besides general relativity and quantum field theory as usually practiced, a third sort of idealization of the physical world has attracted a great deal of attention in the last decade.
At first glance, general relativity and quantum theory look very different mathematically: one deals with space and spacetime, the other with Hilbert spaces and operators.
Quantum topology is very technical, as anything involving mathematical physicists inevitably becomes.
math.ucr.edu /home/baez/planck/node3.html   (1399 words)

  
 DYNAMICAL SYMMETRY BREAKING IN QUANTUM FIELD THEORIES
The phenomenon of dynamical symmetry breaking (DSB) in quantum field theory is discussed in a detailed and comprehensive way.
The realizations of DSB in such realistic theories as quantum chromodynamics and electroweak theory are considered.
The Theory of Free Fields and Nonequivalent Representations of the Canonical Commutation Relations in Field Theories
www.worldscibooks.com /physics/2170.html   (280 words)

  
 Interpretations of Quantum Mechanics and String Theories
Strings are described as probabilistic ripples (waves) of spacetime (NOT in a quantum field) propagating through spacetime at the speed of light.
The same formalism used to describe ripples in quantum fields (i.e., elementary particles) is, therefore, applied.
The theory is symmetric in relation to all curled Universe ("curl-symmetric").
samvak.tripod.com /string01.html   (408 words)

  
 PhilSci Archive - Subject: Quantum Field Theory
Dieks, Dennis (2002) Events and covariance in the interpretation of quantum field theory.
Redei, Miklos and Summers, Stephen J. (2001) Local primitive causality and the common cause principle in quantum field theory.
Wallace, David M W (2001) In defence of naivete: The conceptual status of Lagrangian quantum field theory.
philsci-archive.pitt.edu /view/subjects/quantum-field-theory.html   (926 words)

  
 Quantum Mechanics
Quantum Cybernetics: A New Perspective for Nelson's Stochastic Theory, Nonlocality, and the Klein-Gordon Equation
Geometrisation of electromagnetic field and topological interpretation of quantum formalism
Quantum Electrodynamics is free from the Einstein-Podolsky-Rosen paradox
www.vcpc.univie.ac.at /~ian/hotlist/qc/qm.shtml   (1740 words)

  
 quantum field theory, quantum topodynamics, quantum topology
Quantum space provides a consistent mathematical scheme to incorporate both theory of relativity represented by
The manifold and quantum dynamics are connected in a mathematical manner
topology of the quantum state being computed from the functional integral of quantum topodynamics.
www.homestead.com /qft   (756 words)

  
 INTEGRABLE QUANTUM FIELD THEORIES AND THEIR APPLICATIONS
This volume includes several lecture notes on the fundamentals and elementary techniques of integrable field theories and on their applications to low-dimensional physics systems contributed by leading scientists in the respective fields.
The main topics covered are various aspects of the thermodynamic Bethe ansatz, form factors, Calogero (and related) models, sigma models, conformal boundary conditions, etc. The volume presents both pedagogical material and a current research trend in the field.
Readership: Quantum field theorists, mathematical, theoretical, high energy and condensed matter physicists.
www.worldscibooks.com /physics/4801.html   (251 words)

  
 Citebase - New Numerical Methods for Quantum Field Theories on the Continuum   (Site not responding. Last check: 2007-10-13)
Authors: Emirdag, P. Easther, R. Guralnik, G. Hahn, S. The Source Galerkin Method is a new numerical technique that is being developed to solve Quantum Field Theories on the continuum.
Our approach is based on based on the theory of generalized sinc (sin(x)/x) functions, from which we derive an approximation to the propagator that i...
Quantum field theories and Matrix models have a far richer solution set than is normally considered, due to the many boundary conditions which must be set to specify a solution of the Schwinger-Dyson equations.
www.citebase.org /cgi-bin/citations?id=oai:arXiv.org:hep-lat/9909122   (963 words)

  
 Hitoshi Murayama Home Page   (Site not responding. Last check: 2007-10-13)
For further information, read the research opportunities guide, or see the list of publications, and also Educational material on particle physics.
This famous equation, part of the theory of relativity set forth by Einstein in April 1905, changed our understanding of nature at the most fundamental level.
I listed four categories of big questions, "Horizontal," "Vertical," "Heaven," and "Hell." I discussed how these questions may be addressed at near-future experiments and theoretical developments.
hitoshi.berkeley.edu   (440 words)

  
 Ten Semi-Grand Challenges for Quantum Computing Theory
This is a personal, idiosyncratic list, written at the suggestion of Boaz Barak in connection with the Theory Matters wiki.
For almost a century, physicists and philosophers have debated whether the components of a quantum state are "really there" (some would say inhabiting parallel universes), or are "mere potentialities" until the act of measurement makes one of them real.
We can address this question by studying two complexity classes: QMA (Quantum Merlin-Arthur), which is like NP except that the verification algorithm is quantum and the yes-witnesses are quantum states; and BQP/qpoly, or BQP with a polynomial-size quantum advice state that depends only on the input length.
www.scottaaronson.com /writings/qchallenge.html   (1308 words)

  
 Teoria dei Campi
This is an introductory course on gauge theories for students of the fourth year having already attended Theoretical Physics.
Although most of the subject is worked out in detail starting from a review of the classical theory of fields, I assume that students already know the properties of relativistic equations for particles of spin 0, 1/2 and 1.
If you are interested in the second part of the course, you may check your understanding by inspecting Non-abelian gauge theories first.
www.pd.infn.it /~feruglio/qft2.html   (1127 words)

  
 Citebase - Untwisting Noncommutative R^d and the Equivalence of Quantum Field Theories   (Site not responding. Last check: 2007-10-13)
We extend the twist to an equivalence for quantum field theory using the framework of braided quantum field theory.
We present a rigorous proof of the convergence theorem for the Feynman graphs in arbitrary massive Euclidean quantum field theories on non-commutative R
We identify a limit in which the entire string dynamics is described by a minimally coupled (supersymmetric) gauge theory on a noncommutative space, and discuss the corrections away fro...
www.citebase.org /cgi-bin/citations?id=oai:arXiv.org:hep-th/0003018   (1178 words)

  
 [No title]
Quantum theory in neuroscience and psychology: a neurophysical model of mind/brain interaction.
Quantum Ontology and Mind-Matter Synthesis, Dec 31, 1997 [Appeared in proceedings of X-th Max Born Symposium, eds, Blanchard and Jadczyk, Vol 517 Lecture notes in Physics series, Springer-Verlag, 1999 (Quantum Future:from Volta and Como to the present and beyond) ]
Quantum Mechanical Coherence, Resonance, and Mind (LBL-36915MOD) [Proceedings of Symposia in Applied Mathematics 52: Proceedings of the Norbert Wiener Centenary Conference 1994: V.
www-physics.lbl.gov /~stapp/stappfiles.html   (1325 words)

  
 MATHnetBASE: Mathematics Online   (Site not responding. Last check: 2007-10-13)
Pure mathematicians have only recently begun a rigorous study of topological quantum field theories (TQFTs).
Topological Quantum Field Theories from Subfactors provides a self-contained, explicit description of Ocneanu's construction It introduces and discusses its various ingredients with the distinct advantage of employing only genuine triangulations.
Accessible to graduate students and others just beginning to explore this intriguing topic, Topological Quantum Field Theories from Subfactors will also be of interest to researchers in both mathematics and theoretical physics.
www.mathnetbase.com /ejournals/books/book_summary/summary.asp?id=1044   (224 words)

  
 String Reviews   (Site not responding. Last check: 2007-10-13)
hep-th/0201253: Supersymmetric Gauge Theories and the AdS/CFT Correspondence.
Robert C. Myers (lecture at Leuven workshop on ``The quantum structure of spacetime and the geometrical nature of fundamental interactions'', September 13-19, 2002).
hep-th/0101036: Perturbative Quantum Field Theory in the String-Inspired Formalism.
www.nuclecu.unam.mx /~alberto/physics/stringrev.html   (5080 words)

  
 Amazon: Listmania! - View List "Quantum Field Theory I wish I could understand"   (Site not responding. Last check: 2007-10-13)
Quantum Field Theory in a Nutshell by A. Zee
Quantum Field Theory of Point Particles and Strings (Frontiers in Physics S.) by Brian Hatfield
Quantum Field Theory: A Modern Introduction by Michio Kaku
www.amazon.com /exec/obidos/tg/listmania/list-browse/-/EIELHVNERR1Z   (366 words)

  
 Quantum Mechanics
The so-called "revised printing" is a must, as they must've rushed the first printing of the 2nd edition, and it's full of inexcusable mistakes.
For the more mathematical side of quantum theory, especially for those who are going to be arguing about measurement theory.
It is not thorough with math, but fills in a lot of the intuitive stuff that most textbooks do not present.
www.faqs.org /faqs/physics-faq/part1/section-4.html   (474 words)

  
 Citebase - Introductory Lectures on Quantum Field Theory   (Site not responding. Last check: 2007-10-13)
[7] A. Zee, Quantum field Theory in a Nutshell, Princeton 2003.
A new set of tetrads is introduced within the framework of SU(2) X U(1) Yang-Mills field theories in curved spacetimes.
A new tetrad is introduced within the framework of geometrodynamics for non-null electromagnetic fields.
www.citebase.org /cgi-bin/citations?id=oai:arXiv.org:hep-th/0510040   (950 words)

  
 Topological and homotopical quantum field theories   (Site not responding. Last check: 2007-10-13)
A topological quantum field theory is a way of comparing a cobordism category with the category of vector spaces, in other words a representation of Cobord(d) on Vect.
Homotopy Quantum Field Theories were introduced by Turaev to allow cobordisms with extra structure to be handled.He classified those 1+1 dimensional HQFTs with background space a K(G, 1).
I also have available some slides from my talks at the Streetfest July 2005 and the extended version given at the Cambridge Category Theory Seminar, November 2005.
www.informatics.bangor.ac.uk /~tporter/TQFT/tqft.html   (306 words)

  
 Amazon.com: Integrable Systems, Quantum Groups, and Quantum Field Theories (NATO Science Series C:): Books: L.A. ...   (Site not responding. Last check: 2007-10-13)
Among them, we should mention the new mathematical structures related to integrability and quantum field theories, such as quantum groups, conformal field theories, integrable statistical models, and topological quantum field theories, that are discussed at length by some of the leading experts on the areas in several of the lectures contained in the book.
Apart from these, traditional and new problems in quantum gravity are reviewed.
The book is addressed to researchers in the fields covered, PhD students and any scientist interested in obtaining an updated view of the subjects.
www.amazon.com /exec/obidos/tg/detail/-/0792323963?v=glance   (625 words)

  
 Virtues Of The Haag Expansion In Quantum Field Theory (ResearchIndex)   (Site not responding. Last check: 2007-10-13)
Abstract: I survey the use of the Haag expansion as a technique to solve quantum field theories.
After an exposition of the asymptotic condition and the Haag expansion, I report the results of applying the Haag expansion to several quantum field theories, including galilean-invariant theories, matter at finite temperature (using the BCS model of superconductivity as an illustrative example), the Nambu--Jona-Lasinio model and the Schwinger model.
0.2: The Nonlinear Quantum Gauge Theory--Superrelativity - Leifer Mortimer And
sherry.ifi.unizh.ch /85788.html   (311 words)

  
 Quiprocone Web Site
Current information about quantum information conferences, workshops and meetings worldwide can be found at: http://qubit.chem.utoronto.ca/qc-conferences.html
Advances in Foundations of Quantum Mechanics and Quantum Information with Atoms and Photons
3rd Windsor School on Condensed Matter Theory 'Field Theory of Quantum Coherence, Correlations and Mesoscopics'
www.quiprocone.org /conferences.htm   (205 words)

  
 Amazon.ca: Nonperturbative Methods in Low Dimensional Quantum Field Theories: Proceedings of the Johns Hopkins Workshop ...   (Site not responding. Last check: 2007-10-13)
Amazon.ca: Nonperturbative Methods in Low Dimensional Quantum Field Theories: Proceedings of the Johns Hopkins Workshop on Current Problems in Particle Theory: Books
Nonperturbative Methods in Low Dimensional Quantum Field Theories: Proceedings of the Johns Hopkins Workshop on Current Problems in Particle Theory
Top of Page : Nonperturbative Methods in Low Dimensional Quantum Field Theories: Proceedings of the Johns Hopkins Workshop on Current Problems in Particle Theory
www.amazon.ca /exec/obidos/ASIN/9810205767   (230 words)

  
 Wiley::Quantum Physics & Field Theory   (Site not responding. Last check: 2007-10-13)
Perspectives in Quantum Hall Effects: Novel Quantum Liquids in Low-Dimensional Semiconductor Structures
Quantum Computing: A Short Course from Theory to Experiment
Quantum Field Theory: From Operators to Path Integrals
www.wiley.com /WileyCDA/Section/id-2667.html   (206 words)

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