Modified celestial amplitude in Einstein gravity


Abstract:

In this paper we evaluate the modified celestial amplitude for gravitons and gluons, as defined in [4]. We find that the modified (tree) amplitude is finite for gravitons in Einstein gravity. The modified amplitude behaves like correlation function of operators inserted at various points of null-infinity in the Minkowski space-time. Therefore, unlike the standard celestial amplitudes, these are three dimensional objects. We also show that this amplitude admits conformal soft factorization recently studied in the literature. Read More

Publication: Journal of High Energy Physics

Publisher: Springer Link

Authors: Shamik Banerjee, Pranjal Pandey, Sudip Ghosh, Arnab Priya Saha

Keywords: Conformal Field Theory, Scattering Amplitudes, Space-Time Symmetries

Meet one of the Author:

Dr. Pranjal Pandey earned his Ph.D. in Theoretical High Energy Physics from the Homi Bhabha National Institute, which is under the aegis of the Department of Atomic Energy in India. His publication on the topic of Flat Space Holography, has been cited by leading groups at Harvard, Princeton, and Oxford. His extensive experience in using mathematical models to price derivatives and forecast market movements based on alternative text data, like tweets and news headlines, distinguishes him from others.

Dr. Pranjal Pandey

Affiliations:

Institute of Physics, Sachivalaya Marg, Bhubaneshwar, 751005, India – The Institute of Physics in Bhubaneswar, India is a research institution that is funded jointly by the Department of Atomic Energy (DAE) and the government of Odisha. It was officially established in 1972 and began its academic activities in 1975 with two faculties and the director. From 1974 to 1981, the institute operated out of rented buildings before moving to its current campus in 1981. In 1985, the institute was taken over by the DAE. The predoctoral program at the institute provides a broad-based education in advanced physics and research methodology. Upon completion of the program, students are eligible to pursue a Ph.D. degree awarded by the Homi Bhabha National Institute of the DAE.

Okinawa Institute of Science and Technology, 1919-1 Tancha, Onna-son, Okinawa, 904-0495, Japan – The Okinawa Institute of Science and Technology (OIST) is a graduate school that offers a 5-year PhD program in science. It has a diverse community of faculty and students, with more than half being recruited from outside Japan. The institute has a focus on interdisciplinary research and all education and research are conducted in English. OIST’s research is conducted in five main areas: neuroscience, molecular sciences, environmental and ecological sciences, and physical sciences.

Harish-Chandra Research Institute, Chhatnag Road, Jhunsi, Allahabad, 211019, India – The Harish-Chandra Research Institute (HRI) is a research institute that focuses on mathematics and theoretical physics. It has a PhD program in both subjects and recently added an M.Sc. program in physics. The institute also has a visiting student program for undergraduate and graduate students and runs various outreach programs. HRI has made significant contributions to research and education in mathematics and theoretical physics over the past two decades, with a focus on algebra, analysis, geometry, number theory, astrophysics, condensed matter, particle physics, quantum information, and string theory.

Homi Bhabha National Institute, Anushakti Nagar, Mumbai, 400085, India – The Homi Bhabha National Institute (HBNI) was founded in 2005 under the University Grants Commission Act. It has several constituent institutions and off-campus centers. HBNI’s role is to cultivate expertise in nuclear science and engineering and to encourage basic research that can be translated into technological development and applications through academic programs, such as Master’s and Ph.D. degrees in various fields of engineering, physical, chemical, mathematical, life, and medical and health sciences. HBNI also promotes interdisciplinary research.

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