Hawking radiation, covariant boundary conditions, and vacuum states
نویسندگان
چکیده
منابع مشابه
Hawking Radiation, Covariant Boundary Conditions and Vacuum States
The basic characteristics of the covariant current < Jμ > and the covariant energymomentum tensor < Tμν > in Unruh, Hartle-Hawking and Boulware states are obtained from a chiral effective action. These results are used to justify the covariant boundary condition used in recent approaches [2, 4, 5, 6] of computing the Hawking flux from chiral gauge and gravitational anomalies. We also discuss a ...
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Introduction: Hawking radiation arises upon the quantisation of matter in a background spacetime with an event horizon. It therefore plays an important role in black hole physics. Apart from Hawking’s [4] original derivation, there are other approaches [5, 6], although none is completely clinching or conclusive. This has led researchers to consider alternative derivations providing new insights...
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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 nonconservation of the energy momentum tensor, occur in two different forms – covariant and consistent. The crucial role of covariant anomalies near the horizon is revealed since this is the only input required to obtain the Ha...
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We demonstrate that the near-horizon physics, the Hawking radiation, and the reflection off the radial potential barrier can be understood entirely within a conformal field theory picture in terms of one- and two-point functions in the boundary Liouville theory. An important element in this demonstration is the notion of horizon state, the Hawking radiation being interpreted as a result of the ...
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Hawking radiation is an important and prominent quantum effect that arises upon the quantization of matter fields in a background spacetime with an event horizon. This is due to the different vacuum states between the vicinity of the event horizon and the asymptotic infinity [1]. Apart from the original derivation [1], there are other approaches [2, 3] each having their own merits and demerits....
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2009
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.79.084035