page_title: Deepak Dhar
section_title: Legacy
hierarchical_section_title: Deepak Dhar / Legacy
caption_attribution_description: Brownian Motion on a Sphere. The generator of ths process is ½ times the Laplace-Beltrami-Operator
context_page_description: Deepak Dhar is an Indian theoretical physicist and a distinguished professor at the department of physics of Indian Institute of Science Education and Research, Pune. Known for his research on statistical physics and stochastic processes, Dhar is an elected fellow of all the three major Indian science academies – Indian Academy of Sciences, Indian National Science Academy and National Academy of Sciences, India – as well as of The World Academy of Sciences. The Council of Scientific and Industrial Research, the apex agency of the Government of India for scientific research, awarded him the Shanti Swarup Bhatnagar Prize for Science and Technology, one of the highest Indian science awards, for his contributions to physical sciences in 1991.
context_section_description: Focusing his studies on statistical physics and stochastic processes, Dhar has worked on the statistical mechanics and kinetics of random lattices and his work is reported to have widened our understanding of the disciplines. He is credited with the introduction of spectral dimension concept in the studies of fractals and contributed to developing a methodology for determining their critical phenomena using real-space renormalization group techniques which was the first time the mathematical apparatus was used for calculations on nontrivial critical exponents on fractals. He worked with Ramakrishna Ramaswamy to solve the Abelian sandpile model of self-organized criticality and developed a new model which came to be known as Dhar-Ramaswamy model. Working on directed-site animals-enumeration problem using Bethe ansatz method, he proposed the evolution operator which has since been subjected to studies by other researchers as Dhar directed-site animals-enumeration problem. He also demonstrated the predominance of slow flipping of isolated unfrustrated clusters in auto-correlation functions and proposed models of metastable glassy states in stochastic evolution. His studies have been documented by way of a number of articles and the online article repository of Indian Academy of Sciences has listed 113 of them.
  Dhar is an associate editor of Journal of Statistical Physics, a Springer publication since 2005 where he sat in the editorial board on two previous terms (1993–96 and 1999–2002). He is an editorial board member of the Indian Journal of Pure and Applied Physics (IJPAP) of the National Institute of Science Communication and Information Resources (NISCAIR), a former editorial adviser to Physica A, an Elsevier science journal, and has been associated with journals such as Journal of Statistical Mechanics: Theory and Experiment, Physical Review E and Pramana as an editorial board member. He was a member of the Commission on Statistical Physics of the International Union of Pure and Applied Physics from 1992 to 1995 and is a member of the program committee of the International Centre for Theoretical Sciences. He has also delivered invited speeches and the special lecture on The Curious Relationship Between Physics and Mathematics at the University of Mumbai on 19 October 2016 was one among them.
caption: A computer-simulated realization of a Wiener or Brownian motion process (a continuous-time stochastic process) on the surface of a sphere
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