5 papers
Chiral Anomalies In Field Theories
H. Banerjee
The role of the contribution from the fermion mass term in the axial vector Ward identity in generating the U(1) axial anomaly, both local and global, is elucidated. Gauge invarian…
Fermion decoupling and the axial anomaly on the lattice
H. Banerjee, Asit K. De
By an explicit calculation of the continuum limit of the triangle graph amplitude in lattice QED we show that in the axial Ward identity the ABJ anomaly exactly cancels the pseudos…
Lattice Fermions and the Chiral Anomaly
H. Banerjee, Asit K. De
We show in the Wilson model that the contribution of the regular mass term to the four-divergence of the axial vector current in weak coupling perturbation theory is not zero in th…
Fermions on lattice and chiral invariance
H. Banerjee, Asit K. De
A model for lattice fermion is proposed which is, (i) free from doublers, (ii) hermitian, and (iii) chirally invariant. The price paid is the loss of hypercubic and reflection symm…
Resolution of the strong CP and U(1) problems
H. Banerjee
Definition of the determinant of Euclidean Dirac operator in the nontrivial sector of gauge fields suffers from an inherent ambiguity. The popular Osterwalder-Schrader (OS) recipe…