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5 papers · 2 filters
Sigma-resonance and convergence of chiral perturbation theory
D. J. Cecile, Shailesh Chandrasekharan
The dimensionless parameter , where is the pion decay constant in the chiral limit and is the pion mass at leading order in the quark mass, is expect…
A new computational approach to lattice quantum field theories
Shailesh Chandrasekharan
Developments in algorithms over the past decade suggest that there is a new computational approach to a class of quantum field theories. This approach is based on rewriting the par…
Role of the -resonance in determining the convergence of chiral perturbation theory
D. J. Cecile, Shailesh Chandrasekharan
The dimensionless parameter , where is the pion decay constant and is the pion mass, is expected to control the convergence of chiral perturbat…
Absence of vortex condensation in a two dimensional fermionic XY model
D. J. Cecile, Shailesh Chandrasekharan
Motivated by a puzzle in the study of two dimensional lattice Quantum Electrodynamics with staggered fermions, we construct a two dimensional fermionic model with a global U(1) sym…
Chiral Corrections to Hyperon Axial Form Factors
Fu-Jiun Jiang, Brian C. Tiburzi
We study the complete set of flavor changing hyperon axial current matrix elements at small momentum transfer. Using partially quenched heavy baryon chiral perturbation theory, we…