Subtractive Renormalization of One-Pion-Exchange and Contact Interactions
نویسندگان
چکیده
V. S. Timóteo1, T. Frederico2, A. Delfino3, and L. Tomio4 1Centro Superior de Educação Tecnológica, Universidade Estadual de Campinas, 13484-370, Limeira, SP, Brazil 2Departamento de Fı́sica, Instituto Tecnológico de Aeronáutica, CTA, 12228-900, São José dos Campos, SP, Brazil 3Instituto de Fı́sica, Universidade Federal Fluminense, 24210-900 Niterói, RJ, Brazil and 4Instituto de Fı́sica Teórica, Universidade Estadual Paulista, 01405-900, São Paulo, SP, Brazil
منابع مشابه
Renormalization of the one-pion-exchange interaction
A renormalization scheme for the nucleon-nucleon (NN) interaction based on a subtracted T-matrix equation is proposed and applied to the one-pion-exchange potential supplemented by contact interactions. The singlet and triplet scattering lengths are given to fix the renormalized strengths of the contact interactions. With only one scaling parameter (μ), the results show an overall very good agr...
متن کاملRecursive renormalization of the singlet one-pion-exchange plus point-like interactions
The subtracted kernel approach is shown to be a powerful method to be implemented recursively in scattering equations with regular plus point-like interactions. The advantages of the method allows one to recursively renormalize the potentials, with higher derivatives of the Dirac-delta, improving previous results. The applicability of the method is verified in the calculation of the S0 nucleon-...
متن کاملNucleon-Nucleon Scattering and Effective Field Theory: Including Pions Non-perturbatively
Next to leading order effective field theory calculations are performed for S0 NN scattering using subtractive renormalization procedure. One pion exchange and contact interaction potentials are iterated using Lippman-Schwinger equation. Satisfactory fit to the Nijmegen data is obtained for the momenta up to 300 MeV in the centre of mass frame. Phase shifts are also compared with the results of...
متن کاملSubtractive renormalization of chiral effective theory NN potentials up to next-to-next-to-leading order
We have developed a subtractive renormalization method with which we can evaluate nucleonnucleon (NN) scattering phase shifts produced by the NN potential obtained at leading, nextto-leading, and next-to-next-to-leading order (NNLO) in chiral effective theory (χET). In this method the low-energy constants associated with short-distance NN physics are eliminated from the Lippmann-Schwinger equat...
متن کاملone-pion-exchange NN interaction in presence of derivative contact interactions
We use standard distorted wave theory techniques and dimensional regularization to find out solutions of the nucleon–nucleon Lippman–Schwinger equation with a potential that includes one-pion exchange and additional contact terms with derivatives. Though for simplicity, we restrict the discussion to the S0 channel and to contact terms containing up to two derivatives, the generalization to high...
متن کامل