Mesonic correlation functions in the NJL model with vector mesons
Autor: | E. Ruiz Arriola, R. M. Davidson |
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Přispěvatelé: | Theoretical High Energy Physics (IHEF, IoP, FNWI) |
Rok vydání: | 1995 |
Předmět: |
Physics
Bosonization Nuclear and High Energy Physics Particle physics Instanton High Energy Physics::Lattice Pauli–Villars regularization medicine.medical_treatment High Energy Physics::Phenomenology Scalar (mathematics) Quenched approximation Lattice QCD Pseudoscalar medicine Coordinate space Mathematical physics |
Zdroj: | Physics Letters B, 359. Elsevier |
ISSN: | 0370-2693 |
DOI: | 10.1016/0370-2693(95)01119-b |
Popis: | We compute mesonic correlation functions in Euclidean coordinate space within the Nambu and Jona-Lasinio model with explicit scalar, pseudoscalar, vector and axial-vector couplings. After bosonization and application of the Pauli-Villars regularization method, we verify that the relevant dispersion relations are satisfied in the model, and use them to evaluate the point to point correlatorsin several channels, namely σ, π, ϱ and A . The results are not very sensitive to the particular value of the vector coupling constant, G ν . We also discuss and compare with the corresponding calculations in lattice QCD in the quenched approximation and the random instanton liquid model. |
Databáze: | OpenAIRE |
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