Research papers

•  "Discrete symmetries for electroweak natural type-I seesaw mechanism", Pratik Chattopadhyay and Ketan Patel, Nucl. Phys. B 921 (2017), [arXiv:1703.09541 [hep-ph]]

• "One-loop same helicity four-point amplitude from shifts", Pratik Chattopadhyay and Kirill Krasnov, JHEP 06 (2020), 082, 

[arXiv:2002.11390 [hep-th]]

• "One loop same helicity YM amplitudes from BG currents", Pratik Chattopadhyay and Kirill Krasnov, JHEP 03 (2022), 191  [arXiv:2110.00331 [hep-th]]

• "Dark matter from evaporating pbh dominated in the early universe ", Pratik Chattopadhyay, Arnab Chaudhuri, Maxim Yu Khlopov, [arXiv:2209.11288 [hep-ph]]

• "Anomalies in String-inspired non-local extensions of QED", Fayez Abu-Ajamieh, Pratik Chattopadhyay, Anish Ghosal, Nobuchika Okada, PRD 2024[arXiv:2307.01589 [hep-th]]

• "One-loop effective action in chiral Einstein-Cartan gravity", Pratik Chattopadhyay, IJMPA 39 (2024), 2350186 [arXiv:2310.10405 [hep-th]]

• "A fuzzy model of quarks and gluons", Pratik Chattopadhyay, Anish Ghoshal, Florian Nortier, PLB 2024

[arXiv:2311.08311 [hep-ph]]

• "Celestial self-dual Yang-Mills theory: a new formula and the OPE limit", Pratik Chattopadhyay, Yi-Xiao Tao, JHEP 03 (2024), 100, [arXiv:2401.02760 [hep-th]]

• "One-loop one minus amplitude in YM from shifts", Pratik Chattopadhyay, Sam Wikeley (in preparation)

• " BRST double copy in topologically massive YM and gravity", Pratik Chattopadhyay, Hong Jian He (in preparation)

• "(g-2) anomaly in Lee Wick QED", Fayez Abu Ajamieh, Pratik Chattopadhyay, Marco Frasca (in preparation)