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hep-th2000
Supersymmetry in Singular Quantum Mechanics
Ashok Das
The breaking of supersymmetry due to singular potentials in supersymmetric quantum mechanics is critically analyzed. It is shown that, when properly regularized, these potentials r…
hep-ph2000
Finite Temperature and Large Gauge Invariance
Ashok Das
We discuss the problem of large gauge invariance at finite temperature.
hep-ph2000
Parity-breaking electromagnetic interactions in thermal QED_3
F. T. Brandt, Ashok Das, J. Frenkel
We examine the parity violating terms generated by the box diagram in QED_3 at finite temperature. These lead to both extensive as well as non-extensive effective actions, which ha…
hep-ph2000
Topics in Finite Temperature Field Theory
Ashok Das
We discuss a few selected topics in finite temperature field theory.