International conferences/workshops: 19 Feb-16 Mar, 2018- Attended a workshop entitled "Spring college in the physics of complex systems" held at Abdus Salam ICTP, Trieste, Italy. Recent talks/Posters: 21, February, 2018- Presented a poster entitled "Analytical solutions for multistate problems in time domain" at ICTP, Trieste, Italy. Other conferences: 1) International conference on "Advances in Electron Spectroscopy Experiment and Theory-2015" at IIT Mandi, India (2015). 2) Attended a course "Field theory of classical and quantum phase transitions" organised by GIAN at NIT Goa, India (2017). 3) Attended a GIAN course on "Dark matter: the astroparticle perspective" in Jawaharlal Nehru university, New Delhi (2017).