1. IISc Mathematics Initiative (IMI), Indian Institute of Science, C V Raman Road, Bengaluru, Karnataka 560012, India
2. Department of Physics, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801-3080, United States
3. Molecular Biophysics Unit, Indian Institute of Science, C V Raman Road, Bengaluru, Karnataka 560012, India