Azim Premji University, Bangalore
Jayanth Vyasanakere teaches physics and mathematics in the School of Liberal Studies, Azim Premji University, Bengaluru. He has been working with APU since 2017, after teaching in Tumkur University from 2012. He also teaches in Research Education Advancement Programme at Jawaharlal Nehru Planetarium, Bengaluru. He holds an integrated PhD in Physics from the Indian Institute of Science. His research interest is in condensed matter physics and he has worked in the field of cold atoms studying the effects of artificial gauge fields on interacting Fermi systems. He is a gold medalist from Bangalore University and the recipent of Shyama Prasad Mukherjee Memorial Fellowship – 2011, Kumari L Meera Memorial award for the best Integrated PhD student during MS at IISc – 2010 and the KVPY Fellowship – 2005. He was selected as an Associate of the Indian Academy of Sciences in 2018.
SESSION 3B: Inaugural lectures by Fellows/Associates
A K Singhvi, Physical Research Laboratory, Ahmedabad
Cold fermions in artificial gauge fields
The possibility of employing cold atomic gases as emulators of condensed matter Hamiltonians has got boosted up by the birth and growth of the field of synthetic spin-orbit coupling. The speaker’s group studies interacting Fermi gas in 3D in presence of uniform synthetic non-Abelian gauge fields that induce a generalized Rashba-spin-orbit coupling (RSOC). In presence of a class of RSOC, however small, a two-particle bound state exists even for an arbitrarily small attraction. The fermion system can evolve to a Bose–Einstein condensate of a novel boson called the rashbon, whose properties are determined solely by RSOC and not by the interaction between the fermions or the fermion density. Via a study of collective excitations of the superfluid state, the rashbon–rashbon interaction has been shown to be independent of the constituent fermion–fermion interaction. By constructing a fluctuation theory, the speaker demonstrates that RSOC enhances the transition temperature of a weak Fermi superfluid to the order of Fermi temperature.