362 citations · 1k across the 12 of their papers we have counts for
6 papers · 1 filter
Pion--Nucleon Scattering in a New Approach to Chiral Perturbation Theory
Paul J. Ellis, Hua-Bin Tang
We study pion--nucleon scattering with a chiral lagrangian of pions, nucleons, and -isobars. The scattering amplitude is evaluated to one-loop order, where is a generi…
Pion-Nucleon Scattering at Low Energies
Paul J. Ellis, Hua-Bin Tang
We study pion-nucleon scattering at tree level with a chiral lagrangian of pions, nucleons, and -isobars using a K-matrix unitarization procedure. Evaluating the scattering ampl…
A New Approach to Chiral Perturbation Theory for Matter Fields
Hua-Bin Tang
I propose a prescription for separating the high- and low-energy contributions in effective field theories. This prescription allows a relativistic treatment of matter fields in ch…
Redundance of -isobar Parameters in Effective Field Theories
Hua-Bin Tang, Paul J. Ellis
It is shown that the off-shell parameters in the interaction Lagrangian of pions, nucleons, and -isobars are redundant in the framework of effective field theories. Our results…
The Gluon Condensate and Running Coupling of QCD
Hua-Bin Tang, R. J. Furnstahl
An expression for the photon condensate in quantum electrodynamics is presented and generalized to deduce a simple relation between the gluon condensate and the running coupling co…
Vacuum Contributions in a Chiral Effective Lagrangian for Nuclei
R. J. Furnstahl, Hua-Bin Tang, Brian D. Serot
A relativistic hadronic model for nuclear matter and finite nuclei, which incorporates nonlinear chiral symmetry and broken scale invariance, is presented and applied at the one-ba…