Aritra Banerjee

Office: Lab 4 E25f



  • Postdoctoral Fellow, OIST Quantum Gravity Unit, December 2020- ongoing
  • Postdoctoral Fellow, Asia Pacific Center for Theoretical Physics, Supergravity and String Theory group, August 2019-November 2020.
  • Postdoctoral fellow, String Theory and Quantum Field Theory group, Institute of Theoretical Physics, Chinese Academy of Sciences, March 2017-July 2019. 
  • Doctor of Philosophy, Indian Institute of Technology, Kharagpur, 2013-2017.


  • Master of Science in Physics, Indian Institute of Technology, Kharagpur, 2011-2013.
  • Bachelor of Science, Physics Honours, Presidency College, Kolkata, 2008-2011.

Research Interests: 

Asymptotic symmetries in String Theory and QFT,  Integrability in AdS/CFT, Deformation of CFTs, Theoretical Cosmology, Mathematical Physics.


Recent Publications: Link to INSPIRE-HEP profile

1. On problems with Cosmography in cosmic dark ages: Aritra Banerjee, E.O. Colgain, Misao Sasaki, M.M. Sheikh Jabbari, Published in Phy. Lett. B 818 (2021) 136366, • e-Print: 2009.04109 [astro-ph.CO]

2. Hubble sinks in the low redshift swampland: Aritra Banerjee, Haiying Cai, Lavinia Heisenberg, Eoin O Colgain, M.M. Sheikh Jabbari, Tao Yang; Published in Phys.Rev.D (Letters) 103 (2021) 8, Editor's Suggestion,  • e-Print: 2006.00244 [astro-ph.CO]

3. Rindler on the Worldsheet: Arjun Bagchi,  Aritra Banerjee, Shankhadeep Chakrabortty; Published in:  Phys.Rev.Lett. 126 (2021) 031601•  e-Print: 2009.01408 [hep-th]

4. Ehlers as EM duality in the double copy: Aritra Banerjee, E.O. Colgain, J.A. Rosabal, H.Yavartanoo; Published in: Phys.Rev.D 102 (2020) 126017 • e-Print: 1912.02597 [hep-th]

5. Cosmography and flat ΛCDM tensions at high redshift: Tao Yang,  Aritra Banerjee, Eoin Ó. Colgáin; Published in: Phys.Rev.D 102 (2020) 123532• e-Print: 1911.01681 [astro-ph.CO]

6. A tale of three — tensionless strings and vacuum structure: Arjun Bagchi,  Aritra Banerjee, Shankhadeep Chakrabortty, Sudipta Dutta, Pulastya Parekh; Published in: JHEP 04 (2020) 061• e-Print: 2001.00354 [hep-th]

7. Tensionless Path from Closed to Open Strings: Arjun Bagchi, Aritra Banerjee, Pulastya Parekh; Published in:  Phys.Rev.Lett. 123 (2019)11, 111601•  e-Print: 1905.11732 [hep-th]