Title：UNIVERSAL SCALING IN QUANTUM QUENCH

Speaker：Sumit Das

University of Kentucky

Time：May 22, 2019 (Wednesday) 3:00 PM

Venue： Lecture Hall, Physics Building

Abstract：

Systems with time dependent couplings which interpolate between constant values and involve critical points are expected to display universal scaling. The AdS/CFT correspondence has been used to understand some aspects of such quantum quenches, in particular Kibble-Zurek scaling. In the opposite regime of fast quench, holographic methods have uncovered new scaling laws which have been subsequently shown to hold in general continuum quantum field theories. This talk reviews these developments.

Brief Bio:

Sumit Das received his Ph.D. at the University of Chicago in 1984 under the supervision of Yoichiro Nambu. After postdoctoral positions at Fermilab and Caltech, he joined Tata Institute of Fundamental Research (TIFR), Mumbai as a faculty member in 1987 where he became a Full Professor in 1996. Since 2002 he is a Professor at University of Kentucky and an Adjunct Professor of TIFR. Currently he is the Arts and Sciences Distinguished Professor at University of Kentucky. Das is a Fellow of Indian Academy of Science and a recipient of Bhatnagar Award. His research is in Quantum Field Theory and String Theory.