Varun Rishi

BS-MS (2006-2011), Indian Institute Of Science, Education And Research (IISER), Pune, India

1. Reduced scaling coupled cluster methods for ground and excited states.
2. Search for ab-initio methods, in the framework of coupled cluster theory, that are applicable to strongly correlated molecular systems.

1. Varun Rishi, Ajith Perera, Marcel Nooijen and Rodney J. Bartlett, “Excited states from modified coupled cluster methods”. J. Chem. Phys. 146 (14), 144104 (2017)
2. Varun Rishi, Ajith Perera and Rodney J. Bartlett, “Assessing the distinguishable cluster approximation based on the triple bond-breaking in the Nitrogen molecule”. J. Chem. Phys. 144, 124117 (2016)
3. Jason Byrd, Varun Rishi, Ajith Perera and Rodney J. Bartlett, “Approximating electronically excited states with equation-of-motion linear coupled cluster theory”. J. Chem. Phys. 143, 164103 (2015)
4. Varun Rishi, Ajith Perera and Rodney J. Bartlett, “Transition metal atomic multiplet states through the lens of single reference coupled-cluster and the equation-of-motion coupled-cluster methods”. Theor. Chem. Acc. 133, 1515 (2014)