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Anupam Mazumdar

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Anupam Mazumdar
Born
Anupam Mazumdar
AwardsJSPS Award, Japan, Inlaks Fellowship, India
Scientific career
FieldsPhysics, Cosmology, Inflation (Cosmology), Quantum Gravity
InstitutionsUniversity of Sussex, Imperial College, London, ICTP, McGill University, Niels Bohr Institute, Lancaster University, University of Groningen
Doctoral advisorAndrew R. Liddle
Websitehttp://www.rug.nl/staff/anupam.mazumdar/

Anupam Mazumdar is a theoretical physicist at the University of Groningen[1] specializing in cosmology and quantum gravity.

Together with Sougato Bose, Mazumdar has proposed a bonafide test for the existence of the graviton in a table-top experiment, via witnessing gravitationally-mediated entanglement between two macroscopic superpositions of masses.[2] A positive test of this phenomenon would establish experimentally that gravity is quantum mechanical in nature, and establish the existence of the graviton.[3] The test crucially depends on the quantum nature of gravity, creating non-classical states of matter, and local operation and quantum communication (LOQC).[4]

He has previously been affiliated to the Higgs Centre, at the University of Edinburgh,[5] and the Discovery Center at the Niels Bohr Institute, Copenhagen.[6]

His work has focused on multi field theories of inflation, such as assisted inflation,[7] visible sector inflation such as MSSM inflation.[8] He has worked on the ghost-free and singularity-free construction of infinite derivative theories of gravity,[9] which can potentially resolve the Schwarzschild singularity for mini black holes, yielding a non-singular compact object without event horizon, and cosmological singularities. He has also conjectured with Koshelev that astrophysical black hole has no curvature singularity and devoid of an event horizon,[10] in infinite derivative theories of gravity, because the scale of non-locality in gravitational interaction can engulf the gravitational radius of the compact object. At time scales and at distances below the effective scale of non-locality the gravitational interaction weakens sufficiently enough that a finite pressure from normal matter satisfying null, strong and weak energy conditions can avoid forming blackhole with event horizon and cosmological singularities.

References

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  1. ^ "Anupam Mazumdar - Research database - University of Groningen". www.rug.nl. Retrieved 2018-02-25.
  2. ^ Sougato Bose, Anupam Mazumdar, Gavin Morley (et.al),(Phys. Rev. Lett. 119, no. 24, 240401 (2017) doi:10.1103/PhysRevLett.119.240401, `Spin Entanglement Witness for Quantum Gravity,' American Physical Society
  3. ^ Danielson, Daine L.; Satishchandran, Gautam; Wald, Robert M. (2022-04-05). "Gravitationally mediated entanglement: Newtonian field versus gravitons". Physical Review D. 105 (8): 086001. arXiv:2112.10798. doi:10.1103/PhysRevD.105.086001. S2CID 245353748.
  4. ^ Ryan J. Marshman, Anupam Mazumdar, and Sougato Bose, (Phys.Rev.A 101 (2020) 5, 052110) doi:10.1103/PhysRevA.101.052110,'Locality and entanglement in table-top testing of the quantum nature of linearized gravity'American Physical Society
  5. ^ "Higgs Centre for Fundamental Physics". University of Edinburgh. Archived from the original on 19 June 2015. Retrieved 19 June 2015.
  6. ^ "Discovery Centre, Niels Bohr Institute - Dr Anupam Mazumdar". Niels Bohr Institute. Retrieved 19 June 2015.
  7. ^ Andrew R. Liddle, Anupam Mazumdar, and Franz E. Schunck (26 August 1998) "Assisted inflation". American Physical Society
  8. ^ Rouzbeh Allahverdi, Kari Enqvist, Juan Garcia-Bellido, and Anupam Mazumdar (9 November 2006). "Gauge-invariant inflaton in the minimal supersymmetric standard model". American Physical Society
  9. ^ Tirthabir Biswas, Erik Gerwick, Tomi Koivisto, and Anupam Mazumdar (19 January 2012). "Towards Singularity- and Ghost-Free Theories of Gravity". American Physical Society
  10. ^ Alexey Koshelev and Anupam Mazumdar (31 October 2017)massive compact objects without event horizon exist in infinite derivative gravity?[permanent dead link] American Physical Society