A series of seminars related to Statistical Physics are organized by Statistical Physics Group, University of Calcutta normally on alternate Wednesdays. Topics of current interest on Statistical Physics and its related areas are the main themes of these seminars. StatphysCU started in 2010, having Soham Biswas (January 2010-January 2012) and Sanchari Goswami (January 2010-December 2013 ) as organizers and Subinay Dasgupta and Parongama Sen as advisors. In the past years ( 2010-2013) the effort of the members was to cover almost all areas of Statistical Physics (both classical and quantum) including random walk, percolation, complex networks, frustrated systems, self organized criticality etc. and also some interdisciplinary fields related to Statistical Physics like Opinion Dynamics, Econophysics, Biological Physics, Friction and so on. In these years we had the opportunity to invite the Ph.D students, post docs and the faculty members of different Universities and Institutes of India and abroad. Usually, we upload the pdf files of the presentations given by the speakers in these seminars with their due permission. We cordially invite all the M.Sc and post M.Sc students, Ph.D students, post docs and the faculty members of different Universities and Institutes to attend the future seminars of StatphysCU. --------------------------------------------------------------------------------------------------------------------------------------------------------- Upcoming Seminar : 45th StatphysCU seminar Speaker : Dr. Sakuntala Chatterjee, Dept. of Theoretical Science, SNBNCBS, Kolkata. Date & Time : 18th June, 2014. (Wednesday) at 3:00 PM
Title : Boundary induced phase transition with stochastic entrance and exit Abstract : We study an open-chain totally asymmetric exclusion process (TASEP) with stochastic gates present at the two boundaries. These gates
can randomly switch between an open state and a closed state. In the open state, the gates are highly permeable such that any particle arriving at the gate immediately passes through. In the closed state, a particle gets trapped at the gate and cannot pass through until the gate switches open again. We calculate the phase-diagram of the system and find important and non-trivial differences with the phase-diagram of a regular open-chain TASEP. In particular, depending on switching rates of the two gates, the system may or may not admit a maximal current phase. Our analytic calculations within mean-field theory captures the main qualitative features of our Monte Carlo simulation results. We also perform a refined mean-field calculation where the correlations at the boundaries are taken into account. This theory shows significantly better quantitative agreement with our simulation results.
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statphysCU@gmail.com