Jul 5 – 10, 2021
Europe/Rome timezone

Back-reaction of Matter Fluctuations in Asymptotically non-flat Black-hole Space-times

Jul 6, 2021, 7:55 AM
Talk in the parallel session Black hole thermodynamics Black Hole Thermodynamics


Manu Srivastava (Indian Institute of Technology Bombay)


Hawking radiation remains a crucial theoretical prediction of semi-classical gravity and is considered one of the critical tests for a model of quantum gravity. However, Hawking’s original derivation used quantum field theory on a fixed background. Efforts have been made to include the space-time fluctuations arising from the quantization of the dynamical degrees of freedom of gravity itself and to study the effects on the Hawking particles. Using semi-classical analysis, we study the effects of quantum fluctuations of scalar field stress-tensors in asymptotic non-flat spherically symmetric black-hole space-times. Using two different approaches, a statistical mechanical approach and a quantum field theoretic approach, we obtain a critical length-scale from the horizon at which gravitational interactions become large, i.e., when the back reaction to the metric due to the scalar field becomes significant. The work can be found at [arXiv: 2008.00429].

Primary author

Manu Srivastava (Indian Institute of Technology Bombay)


Prof. Shankaranarayanan Subramaniam (Indian Institute of Technology Bombay)

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