- Saha Institute of Nuclear Physics (SINP), Kolkata, India.
- International Centre for Theoretical Sciences (ICTS), Bangalore, India.
- Indian Institute of Science (IISc), Bangalore, India.
- Indian Association for the Cultivation of Science (IACS), Kolkata, India.
- Theoretical Physics group, TU Delft, Delft, The Netherlands.
- Condensed Matter group, HRI, Allahabad, India.