Dr. Renjan Rajan john
School of Pure & Applied Physics Email :renjan@mgu.ac.in |

**Research Interests**

** Theoretical High Energy Physics**

1) Conformal Field Theories

2) Scattering Amplitudes Program

3) Supersymmetric Gauge Theories

**Qualifications**

Ph.D. in Physics-Institute of Mathematical Sciences, Chennai (2017)

M.Sc. Physics with specialization in Quantum Field Theory Institute of Mathematical Sciences, Chennai (2012)

B.Sc. (Hons.) Physics Chennai Mathematical Institute, Chennai (2010)

**Research/Teaching experience**

Post-doctoral fellow (August 2020 – June 2022)- IISER Pune, Pune, India

Post-doctoral fellow (August 2019 – July 2020)-Universita del Piemonte Orientale, Alessandria, Italy

Post-doctoral fellow (November 2017 – July 2019)-University of Torino, Torino, Italy

**Citation index**

- Total Number of publications: 25
- h-index : 13
- Citation -current: 428
- No of conferences and symposia attended: 20

**Fellowships awarded**

Junior Research Fellowship awarded by the Institute of Mathematical Sciences (2011 to 2013)

Senior Research Fellowship awarded by the Institute of Mathematical Sciences (2013 – 2017)

**Examinations Qualified **

All India Rank 84 in National Eligibility Test under the CSIR Fellowship scheme (JRF and Lectureship) in Physical Sciences, conducted in 2012

Selected for the undergraduate program in Physics at the Chennai Mathematical Institute through a National Level Entrance Test

Qualified the Regional Mathematical Olympiad and got selected for the Indian National Mathematical Olympiad (2006-07).

**List of Publications**

- Constraining momentum space CFT correlators with consistent position space OPE limit and the collider bound, S. Jain, Renjan Rajan John, A. Mehta and Dhruva K. S, JHEP 02 (2022), 084 arXiv:2111.08024[hep-th]
- Relation between parity-even and parity-odd CFT correlation functions in three dimensions, S. Jain and Renjan Rajan John, JHEP 12 (2021), 067 arXiv:2107.00695[hep-th]
- Anyonic correlation functions in Chern-Simons matter theories, Y. Gandhi, S. Jain, Renjan Rajan John, arXiv:2106.09043[hep-th]
- Higher spin 3-point functions in 3d CFT using spinor-helicity variables, S. Jain, Renjan Rajan John, A. Mehta, A. A. Nizami and A. Suresh, JHEP 09 (2021), 041 arXiv:2106.00016[hep-th]
- Double copy structure of parity-violating CFT correlators, S. Jain, Renjan Rajan John, A. Mehta, A. A. Nizami and A. Suresh, JHEP 07 (2021), 33 arXiv:2104.12803[hep-th]
- Momentum space parity-odd CFT 3-point functions, S. Jain, Renjan Rajan John, A. Mehta, A. A. Nizami and A. Suresh, JHEP 08 (2021), 89 arXiv:2101.11635[hep-th]
- Constraining momentum space correlators using slightly broken higher spin symmetry, S. Jain, Renjan Rajan John and V. Malvimat, JHEP 04 (2021), 231 arXiv:2008.08610[hep-th]
- Weights, Recursion relations and Projective triangulations for Positive Geometry of scalar theories, Renjan Rajan John, R. Kojima and S. Mahato, JHEP 10 (2020), 037 arXiv:2007.10974[hep-th]
- Momentum space spinning correlators and higher spin equations in three dimensions, S. Jain, Renjan Rajan John and V. Malvimat, JHEP 11 (2020), 049 arXiv:2005.07212[hep-th]
- On positive geometries of quartic interactions: Stokes polytopes, lower forms on associahedra and world-sheet forms, P. B. Aneesh, P. Banerjee, M. Jagadale, Renjan Rajan John, A. Laddha and S. Mahato, JHEP 04 (2020), 149 arXiv:1911.06008[hep-th]
- Modular properties of surface operators in N=2 SQCD, S. Ballav and Renjan Rajan John.JHEP 07 (2019) 177 arXiv:1905.10898[hep-th]
- Surface operators in N=2 SQCD and Seiberg duality, S. K. Ashok, S. Ballav, M. Frau, and Renjan Rajan John. Eur.Phys.J. C79 (2019) no.5, 372 arXiv:1901.09630[hep-th]
- Surface operators, dual quivers and contours, S. K. Ashok, S. Ballav, M. Billo, E. Dell’Aquila, M. Frau, V. Gupta, Renjan Rajan John, and A. Lerda.Eur.Phys.J. C79 (2019) no.3, 278 arXiv:1807.06316[hep-th]
- Surface operators in 5d gauge theories and duality relations, S. K. Ashok, M. Billo, E. Dell’Aquila, M. Frau, V. Gupta, Renjan Rajan John, and A. Lerda.JHEP 05 (2018) 046 arXiv:1712.06946[hep-th]
- Surface operators, chiral rings, and localization in N=2 gauge theories, S. K. Ashok, M. Billo, E. Dell’Aquila, M. Frau, V. Gupta, Renjan Rajan John and A. Lerda.JHEP 11 (2017) 137 arXiv:1707.08922[hep-th]
- Modular and duality properties of surface operators in N=2* gauge theories, S. K. Ashok, M. Billo, E. Dell’Aquila, M. Frau, Renjan Rajan John, and A. Lerda. JHEP 07 (2017) 068 arXiv:1702.02833[hep-th]
- Exact WKB Analysis of N=2 Gauge Theories, S.K. Ashok, D.P. Jatkar, Renjan Rajan John, M.Raman, J.Troost. JHEP 07 2016 115 arXiv:1604.05520 [hep-th]
- Non-perturbative studies of N=2 Conformal Quiver Gauge Theories, S.K. Ashok, M. Billo, E. Dell’Aquila, M. Frau, Renjan Rajan John, A. Lerda. Fortschritte der Physik 63 (5), 259-293 arXiv:1502.05581 [hep-th]