[2][3] He was several times visiting faculty in the Nuclear Theory Group of Iowa State University[4] [5] [6] and in the Field Theory Group of the Institute of Theoretical Physics, University of Oldenburg.

In particular, he studies the canonical structure, constrained dynamics and Dirac's instant-form and light-front quantization of field theory, string theory and D-brane actions using the Hamiltonian and path integral formulation and the BRST quantization.

This work suggests that an infinite sequence of bifurcation points exists in the phase diagrams of such boson stars.

[18][19][20][21][10] In the early stages of his research, he also worked on the non-relativistic and relativistic Quark model(s).

[22][23][24] Asoke Nath Mitra, Harald J. W. Mueller-Kirsten, James P. Vary, Jutta Kunz, Usha Kulshreshtha, Sanjeev Kumar