Welcome to Journal Club

16th Oct Talk:

Hecke Algebra and the Langlands Program

Speaker: Dr. Manish Mishra

Position: Assistant Professor

Affiliation: Department of Mathematics, IISER Pune
Date: October 16, 2017 (Monday) Time: 4:00 PM
Venue: Seminar Hall, SPS

Abstract: The Langlands program, roughly speaking, predicts a natural correspondence between the finite dimensional complex representations of the Galois group of a local or a number field and the infinite dimensional representations of real, p-adic and adelic reductive groups. I will very briefly talk about the local Langlands conjectures and an approach via Hecke algebras. I will then talk about my result with Bertand Lemaire about Langlands-Shelstad transfer of the Bernstein centre of depth zero principal series blocks.


Last Talk:

Granular Systems and Solid Friction

Speaker: Prasenjit Das

Position: ISF-UGC Post Doctoral Fellow

Affiliation: School of Physics & Astronomy, Tel  Aviv University, Israel
Date: October 13, 2017 (Friday) Time: 5:00 PM
Venue: Seminar Hall, SPS

Click here to download the PPT of the Talk

In this talk, I will describe the single particle Brownian motion under the influence of solid friction. The numerical results for mean-squared velocity and velocity autocorrelation function are in good agreement with the analytical results in all physical dimensions. Next, we apply the solid friction on a system of granular particles. We consider this frictional force only as the mechanism of dissipation of energy. The instantaneous temperature of the system decays with time in a power-law fashion. In the early stage of evolution, the decay exponent is 3/2 which crosses over to 1 at later times. The density and velocity fields show clustering which is characterized by equal-time correlation functions and structure factors show dynamical scaling. The average domain size of density and velocity fields grow as L∼t α with α=1/3.


The Nobel Prize in Physics 2017 was divided, one half awarded to Rainer Weiss, the other half jointly to Barry C. Barish and Kip S. Thorne "for decisive contributions to the LIGO detector and the observation of gravitational waves. The Laser Interferometer Gravitational-Wave Observatory and the first direct observation of gravitational waves Click here to learn more

The Nobel Prize in Chemistry 2017 was awarded to Jacques Dubochet, Joachim Frank and Richard Henderson "for developing cryo-electron microscopy for the high-resolution structure determination of biomolecules in solution". Click here to learn more

About Us

We are a group of dynamic and active students of Physics,Chemistry and Mathematics in School of Physical Sciences,JNU. We organize talks related to current issues in Physics,Chemistry and Mathematics.These talks are pedagogical and very fundamental in nature. Journal Club provides a platform to promote lively discussion and exchange ideas among various disciplines.We meet once a week at 5:00 PM in SPS Seminar room. We act as a forum to promote interdisciplinary communication and collaboration among the students.
In addition to that we screen movies and documentaries related to science every friday.