Dr Candadi V Sukumar

Abstract:

We present a systematic procedure for constructing a hierarchy of non-relativistic Hamiltonians with the property that the adjacent members of the hierarchy are ‘supersymmetric partners’ i.e. they share the same eigenvalue spectrum except for the ‘missing’ ground state and the eigenvectors are simply related. © 1985 The Institute of Physics.

Abstract:

A new derivation of correction terms to the primitive semiclassical amplitude for multiple inelastic scattering is presented. It is shown that a modification of the path integral method used by Pechukas yields correction terms in agreement with the results obtained in a recent paper by Sukumar and Brink.

Abstract:

It is shown that the nonlinear equation of motion for the energy operator of a few-level atom interacting with a single mode radiation field can be solved explicitly.

Abstract:

The authors present three analytically tractable models for a two-level atom interacting with a coherent or thermal radiation field and study the behaviour of the atomic excitation energy for various initial conditions.

Abstract:

The projectors P ̂ and Q ̂ are associated to the classically forbidden and allowed regions, respectively. A finite rank algorithm provides the propagator (E - Q ̂ H ̂ Q ̂)-1. A generalized connection between a Bohr-Sommerfeld-like rule and the Bloch-Horowitz theory is found. © 1984.