Home >Theoretical Physics > Overview > Members
Professor N.KUMAR
Emeritus Professor
Phone : 948083 6222 / 23611016
Email : nkumar
Webpage : www.rri.res.in/~nkumar/
• Vision
• Research Areas
• Members
• Publications
• PhD Students
(a) Quantum First-Passage Time (Q-FPT): Extending the original work of Schroedinger for the Classical First-Passage Time (C-FPT). Also, extending Schroedinger.s work to the quantum 1D lattice; (b) Re-visiting Bohr-van Leeuwen theorem: On the absence of classical orbital diamagnetism in thermal equilibrium to the case of a random steady state (cyclic equilibrium). Predicting a possible orbital para-/ferromagnetism; (c) The discrete, the continuous, and the .con-crete. 1D systems, and the elastic energy transport in a spider dragline silk fibre; (d) Accelerating expanding universe: Expanding in what is the question!
Selected publications
1 N Kumar,
Classical orbital magnetic moment in a dissipative stochastic system,
Phys. Rev. E, 85 (2012) 011114; See also, Phys. Rev. E, 86 (2012) 029902(E).
2 V Ranjith and N Kumar,
1D Tight-Binding Models Render Quantum First Passage Time "Speakable",
Int. J. Theor. Phys. 53(12) (December 2014).
3 Dibyendu Roy and N Kumar,
Langevin dynamics in crossed magnetic and electric fields: Hall fluctuations,
Phys. Rev. E. 78 (2008) 052102.
4 Shankar Ghosh, A K Sood and N Kumar,
Carbon nanotube flow sensors,
Science, 299 (2003) 1042.
5 N Kumar, T P Pareek and A M Jayannavar,
c-Axis resistivity and high-Tc super-conductivity,
Phys. Rev., B57 (1998) 13399.
6 S Sanyal, A K Sood, S Ramkumar, S Ramaswamy and N Kumar,
Novel polarization dependence in diffusing-wave spectroscopy of crystallizing colloidal suspensions,
Phys. Rev. Lett. 72 (1994) 2963.
7 N Kumar,
Localization of isolated holes in a Mott insulator and delocalization by pairing,
Phys. Rev. B42 (1990) 6138.
8 P A Mello, P Pereyra and N Kumar,
A macroscopic approach to resistance fluctuation in disordered wires,
Annals of Phys. 181 (1988) 290.
9 A M Jayannavar and N Kumar,
Non-diffusive quantum transport in a dynamically disordered medium,
Phys. Rev. Lett. 48 (1982) 553.
10 J Heinrichs and N Kumar,
Transient effects in low-temperature specific heat of amorphous dielectrics,
Phys. Rev. Lett. 36 (1976) 1406.