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Connecting anomaly and tunneling methods for Hawking effect through chirality
Rabin Banerjee, Bibhas Ranjan Majhi
The role of chirality is discussed in unifying the anomaly and the tunneling formalisms for deriving the Hawking effect. Using the chirality condition and starting from the familia…
Hawking Radiation, Covariant Boundary Conditions and Vacuum States
Rabin Banerjee, Shailesh Kulkarni
The basic characteristics of the covariant chiral current and the covariant chiral energy-momentum tensor are obtained from a chiral effective action. These resu…
Quantum Tunneling and Trace Anomaly
Rabin Banerjee, Bibhas Ranjan Majhi
We compute the corrections, using the tunneling formalisim based on a quantum WKB approach, to the Hawking temperature and Bekenstein-Hawking entropy for the Schwarzschild black ho…
Covariant Anomalies, Horizons and Hawking Radiation
Rabin Banerjee
Hawking radiation is obtained from anomalies resulting from a breaking of diffeomorphism symmetry near the event horizon of a black hole. Such anomalies, manifested as a nonconserv…
Quantum Tunneling Beyond Semiclassical Approximation
Rabin Banerjee, Bibhas Ranjan Majhi
Hawking radiation as tunneling by Hamilton-Jacobi method beyond semiclassical approximation is analysed. We compute all quantum corrections in the single particle action revealing…
Aspects of Diffeomorphism and Conformal invariance in classical Liouville theory
Rabin Banerjee, Sunandan Gangopadhyay, Shailesh Kulkarni
The interplay between the diffeomorphism and conformal symmetries (a feature common in quantum field theories) is shown to be exhibited for the case of black holes in two dimension…