23 citations · 172 across the 26 of their papers we have counts for
4 papers · 1 filter
The S-matrix of the Faddeev-Reshetikhin Model, Diagonalizability and PT Symmetry
Ashok Das, A. Melikyan, V. O. Rivelles
We study the question of diagonalizability of the Hamiltonian for the Faddeev-Reshetikhin (FR) model in the two particle sector. Although the two particle S-matrix element for the…
Thermal Operator and Dispersion Relation in QED at Finite Temperature and Chemical Potential
Ashok Das, J. Frenkel
Combining the thermal operator representation with the dispersion relation in QED at finite temperature and chemical potential, we determine the complete retarded photon self-energ…
Hard thermal effective action in QCD through the thermal operator
Ashok Das, J. Frenkel
Through the application of the thermal operator to the zero temperature retarded Green's functions, we derive in a simple way the well known hard thermal effective action in QCD. B…
Hard thermal effective actions in the Schwinger formulation
Ashok Das, J. Frenkel
We derive the properties of hard thermal effective actions in gauge theories from the point of view of Schwinger's proper time formulation. This analysis is simplified by introduci…