Results 181 to 190 of about 651 (212)

Chiral Anomalies and the Chiral Lagrangian [PDF]

open access: yes, 1985
The subject of this thesis is some implications of chiral anomalies for chiral Lagrangians. The thesis consists of three parts: In the first part, a somewhat heuristic discussion of the topological meaning of anomalies is given in the framework recently introduced by Alvarez. Its application to the sigma model anomalies is also given.
Sonoda, Hidenori
openaire   +3 more sources

Nonperturbative Approach to Effective Chiral Lagrangians and Meson Interactions [PDF]

open access: yesPhysical Review Letters, 1998
We develop a coupled channel unitary approach describing the behavior at higher energies of systems whose low-energy dynamics is given by effective O(p^2) and O(p^4) chiral Lagrangians. Our free parameters are those of the O(p^4) Lagrangian. When applied
Eulogio Oset, J R Peláez, J A Oller
exaly   +3 more sources

Instantons and chiral Lagrangian

Physical Review D, 1989
We derive the chiral Lagrangian including instanton corrections in a consistent way. $\mathrm{CP}$ violation associated with the $\ensuremath{\theta}$ term in QCD is discussed in terms of this chiral Lagrangian. A particular emphasis is given to a phenomenological determination of ${m}_{u}$ and $\ensuremath{\theta}$.
, Choi, , Kim
openaire   +2 more sources

Spectrum of QCD and chiral Lagrangians of the strong and weak interactions [PDF]

open access: yesPhysical Review D, 1989
Published version is located at http://prd.aps.org/abstract/PRD/v39/i7/p1947_1Chiral Lagrangians contain in their coefficients information concerning the underlying fundamental theory.
German Valencia, John F Donoghue
exaly   +1 more source

Chiral Lagrangian of pseudoscalars and vectors

Physical Review D, 1985
We formulate a parity-invariant chiral Lagrangian which includes nonlinearly transforming vector mesons but no axial-vector mesons. It is gotten by a simple substitution from the Lagrangian involving a linearly transforming vector and axial-vector multiplet.
, Kaymakcalan, , Schechter
openaire   +2 more sources

Effective chiral Lagrangian with baryons

Physical Review D, 1987
We use Ioffe's method of constructing (local) baryon field operators in terms of quarks to derive an effective chiral Lagrangian with U(3)\ifmmode\times\else\texttimes\fi{}U(3) symmetry consisting of the ${J}^{P}$${=(1/2)}^{+}$ baryon octet, the ${J}^{P}$${=(1/2)}^{\mathrm{\ensuremath{-}}}$ baryon nonet, and the pseudoscalar-meson nonet. This formalism
openaire   +2 more sources

ON QCD INVESTIGATIONS OF CHIRAL LAGRANGIAN

International Journal of Modern Physics A, 2005
I review the present status of QCD investigations on chiral Lagrangian for pseudo scalar mesons.
openaire   +1 more source

EQUIVALENCE OF THE QUADRATIC LAGRANGIANS FOR CHIRAL BOSONS

International Journal of Modern Physics A, 1992
Canonical quantization of both the Labastida-Pernici quadratic Lagrangian for two chiral bosons and the simplest chiral boson quadratic Lagrangian where the self-duality is imposed using a Lagrange-multiplier term is performed taking a proper account of the zero modes in the compact case, showing that they are exactly equivalent.
openaire   +1 more source

Remarks on the dimension-four chiral Lagrangian

Physical Review D, 1986
The profound fact that the dimension-four operators in the effective chiral Lagrangian, including quartic-derivative terms, are uniquely determined by the integration of spurious (nontopological) chiral anomalies has rich applications to low-energy hadron physics. The form factor f-italic/sub -/ and the Callan-Treiman relation in K-italic/sub l-italic//
openaire   +2 more sources

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