Padé Approximation to theSMatrix above Production Threshold for Pion-Nucleon Scattering in Pseudoscalar Field Theory

1970 ◽  
Vol 1 (12) ◽  
pp. 3506-3510
Author(s):  
L. B. Rédei
Keyword(s):  
Field Theory ◽  
Padé Approximation ◽  
Pade Approximation ◽  
Nucleon Scattering ◽  
Production Threshold ◽  
Pion Nucleon

scholarly journals The S-wave pion–nucleon scattering lengths from pionic atoms using effective field theory

2003 ◽  
Vol 720 (3-4) ◽  
pp. 399-415 ◽  
Author(s):  
S.R. Beane ◽  
V. Bernard ◽  
E. Epelbaum ◽  
Ulf-G. Meißner ◽  
D.R. Phillips
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Effective Field ◽  
S Wave ◽  
Nucleon Scattering ◽  
Pion Nucleon ◽  
Pionic Atoms ◽  
Scattering Lengths

scholarly journals Recent results of the pion-nucleon scattering and the widths of the delta and Roper resonances in BChPT

2019 ◽  
Vol 199 ◽  
pp. 01005
Author(s):  
J. Gegelia
Keyword(s):  
Field Theory ◽  
Perturbation Theory ◽  
Effective Field Theory ◽  
Degrees Of Freedom ◽  
Effective Field ◽  
Chiral Perturbation ◽  
Nucleon Scattering ◽  
Delta Resonances ◽  
Pion Nucleon ◽  
Dynamical Degrees

Recent calculations of the pion-nucleon scattering in covariant baryon chiral perturbation theory with explicit delta resonances are presented. Two-loop results of the widths of the Δ and Roper resonances are discussed in the framework of an effective field theory with nucleons, pions and the Roper and delta resonances as dynamical degrees of freedom.

Modeling of Rails Expressed using Pade Approximation Considering Frequency Dependent Effect

2017 ◽  
Vol 137 (2) ◽  
pp. 147-153
Author(s):  
Akinori Hori ◽  
Hiroki Tanaka ◽  
Yuichiro Hayakawa ◽  
Hiroshi Shida ◽  
Keiji Kawahara ◽  
...  
Keyword(s):  
Padé Approximation ◽  
Pade Approximation ◽  
Frequency Dependent ◽  
Dependent Effect
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