July 2000 - Sept 2000 BLTP (JINR), Dubna, Russia - Visiting
Scientist
August-September 2001 NCL, Pune and CTS, Bangalore------ Visitor
September 2002 I.I.SC, Bangalore-------- Visitor
RESEARCH PROFILE My current research interests are primarily in the areas of superconductivity,
magnetism, quantum many-body physics and statistical mechanics. Recently my
research interest has also grown in the area of molecular biophysics
interfaced with statistical mechanics. Some of the research problems I have
been involved with at present are :-
(i) Analysis of correlations within DNA. (ii) Dynamical spin susceptibility and spin stiffness constant for the
strongly correlated systems described by t-J model in normal and super-
conducting phase.
(iii) Spin dynamics of layered triangular antiferromagnet with uniaxial aniso-
tropy.
(iv) Quantum spin modelling of various processes involving DNA.
(v)Effective field theory and spin dynamics for the low dimensional quantum
spin system.
.
PUBLICATIONS 1.Scaling Violations in Coding DNA (A. Som, S. Sahoo, I. Mukhopadhyay
and J.Chakrabarti) Europhys. Lett. 62, 271-277 (2003
2.Effective Theory for a Quantum Spin System in Low Dimensions-Beyond
the Long Wavelength Limit (with S.K. Paul) Mod. Phys. Lett. B 16,
251-259 (2002).
3.Dynamical Spin Susceptibility of t-J model in Superconducting Phase
Theoretical and Mathematical Physics, 136, 1022-1030 (2003).
4.Possible Existence of Topological Excitations in Quantum Spin Models in
Low Dimensions (with S.K. Paul) Phys. Rev. B 60, 6234-6337 (1999).
COLLABORATORS (PRESENT)
1. Dr. Samir K. Paul (SNBS, Calcutta).
2. Professor B.S. Shastry (University of California, Santa Cruz, USA).
3. Professor N.M. Plakida (BLTP, JINR, Dubna, Russia).
4. Professor B. K. Chakraverty (LEPES, CNRS, Grenoble, France).
