Results 271 to 280 of about 16,496 (311)

Algebra of Currents

Fortschritte der Physik, 1969
AbstractThis is a review paper on the most important results obtained from the Algebra of Currents introduced by Gell‐Mann. It includes a detailed discussion on the derivation of sum rules (Adler‐Weisberger, Cabibbo‐Radicati, etc.), either with the p → ∞ method and with the covariant method. Theorems for the emission of zero energy pions are discussed,
Maiani, L., Preparata, G.
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Automorphisms of Extended Current Algebras

Proceedings of the American Mathematical Society, 1989
We construct a (noncentral) extension of current algebras and study the adjoint action induced by the current group.
PIAZZA, Paolo, WU S.
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CURRENT DECOMPOSITIONS AND CURRENT ALGEBRA

Modern Physics Letters A, 1991
Currents are decomposed into the sum of first- and second-class currents under the breaking of isospin symmetry. The above decompositions are then used to discuss the decay r → ηπντ and the current algebra.
CHIEN-ER LEE, BENJAMIN TSENG, YEOU-WEI YANG   +2 more
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Minimal Current Algebra

Physical Review, 1969
We devise an algebra of currents and their first time derivatives designed to damp at high momentum the asymptotic behavior of lepton-pair scattering amplitudes from hadrons consequent from the local current algebra of Gell-Mann. Given certain criteria, the algebra we find is unique, and the commutators are expressed linearly in terms of the currents ...
J. D. Bjorken, R. A. Brandt
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CURRENT-CURRENT CORRELATION FUNCTION ON ALGEBRAIC CURVES

Modern Physics Letters A, 1993
We derive an explicit expression for a current-current correlation function on a Riemann surface represented as 3 sheets ramified covering over CP(1). The method used in the paper can be easily applied to more general algebraic curves. Knowledge of G(z, w) enables calculation of the expectation value of the energy momentum tensor for scalar field.
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On the connection between current-density algebras and charge-current algebras

Il Nuovo Cimento A, 1969
The equal-time limit of commutator matrix elements of charge densities is calculated hy means of structures which follow from general principles of quantum field theory, especially locality and divergence conditions. It is shown that these structures imply the occurnence of at least three gradient terms.
U. Völkel, A. H. Völkel
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Superconvergence and current algebra

Annals of Physics, 1967
Abstract We consider some general features of the superconvergence sum rules and of their saturation. We treat also the problem of the structure of current algebra sum rules, discussing the presence of non Regge asymptotic behavior. Finally, we discuss current algebra and superconvergence sum rules for higher-spin targets, and their mutual ...
V De Alfaro, S Fubini, C Rossetti, G Furlan   +3 more
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Infinite dimensional Lie algebras and current algebra

2008
The “current algebras” of elementary particle physics and quantum field theory are interpreted as infinite dimensional Lie algebras of a certain definite kind. The possibilities of algebraic structure and certain types of representations of these algebras by differential operators on manifolds are investigated, in a tentative way. The Sugawara model is
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Current Algebra

Annual Review of Nuclear Science, 1968
J D Bjorken, M Nauenberg
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Variational algorithms for linear algebra

Science Bulletin, 2021
Xiaosi Xu, Jinzhao Sun, Suguru Endo
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