Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Causal_perturbation_theory> ?p ?o. }
Showing items 1 to 14 of
14
with 100 items per page.
- Causal_perturbation_theory abstract "Causal perturbation theory is a mathematically rigorous approach to renormalization theory, which makesit possible to put the theoretical setup of perturbative quantum field theory on a sound mathematical basis.It goes back to a seminal work by Henri Epstein and Vladimir Jurko Glaser ("The role of locality in perturbationtheory", published in Annales Poincaré Phys. Theor. A19, p. 211, 1973).When developing quantum electrodynamics in the 1940s, Shin'ichiro Tomonaga, Julian Schwinger,Richard Feynman, and Freeman Dyson discovered that, in perturbative calculations, problems with divergentintegrals abounded. The divergences appeared in calculations involving Feynman diagrams with closed loops of virtual particles. It is an important observation that in perturbative quantum field theory, time-ordered products of distributions arise in a natural way and may lead to ultraviolet divergences in the corresponding calculations.From the mathematical point of view, the problem of divergences is rooted in the fact that the theory ofdistributions is a purely linear theory, in the sense that the product of two distributions cannot consistently be defined (in general), as was proved by Laurent Schwartz in the 1950s.Epstein and Glaser solved this problem for a special class of distributions thatfulfill a causality condition, which itself is a basic requirement in axiomatic quantum field theory. In their original work, Epstein and Glaser studied only theories involving scalar (spinless)particles. Since then, the causal approach has been applied also to a wide range of gauge theories,which represent the most important quantum field theories in modern physics.".
- Causal_perturbation_theory wikiPageID "3784466".
- Causal_perturbation_theory wikiPageRevisionID "544269871".
- Causal_perturbation_theory hasPhotoCollection Causal_perturbation_theory.
- Causal_perturbation_theory subject Category:Quantum_field_theory.
- Causal_perturbation_theory comment "Causal perturbation theory is a mathematically rigorous approach to renormalization theory, which makesit possible to put the theoretical setup of perturbative quantum field theory on a sound mathematical basis.It goes back to a seminal work by Henri Epstein and Vladimir Jurko Glaser ("The role of locality in perturbationtheory", published in Annales Poincaré Phys. Theor. A19, p.".
- Causal_perturbation_theory label "Causal perturbation theory".
- Causal_perturbation_theory label "FQFT".
- Causal_perturbation_theory sameAs FQFT.
- Causal_perturbation_theory sameAs m.09_vqh.
- Causal_perturbation_theory sameAs Q1389471.
- Causal_perturbation_theory sameAs Q1389471.
- Causal_perturbation_theory wasDerivedFrom Causal_perturbation_theory?oldid=544269871.
- Causal_perturbation_theory isPrimaryTopicOf Causal_perturbation_theory.