7,922 research outputs found
Non-thermal radiation of black hole off canonical typicality
We study the Hawking radiation of black holes by considering the canonical
typicality. For the universe consisting of black holes and their outer part, we
directly obtain a non-thermal radiation spectrum of an arbitrary black hole
from its entropy, which only depends on a few external qualities (known as
hairs), such as mass, charge, and angular momentum. Our result shows that the
spectrum of the non-thermal radiation is independent of the detailed quantum
tunneling dynamics across black hole horizon. We prove that the black hole
information paradox is naturally resolved by taking account the correlation
between black hole and its radiation in our approach.Comment: 5 pages, 1 figure, pulished on Europhysics Letters, comments are
welcome
Time-reversal of multiple-force-point chordal
Chordal SLE is a natural variant of chordal SLE
curve. It is a family of random non-crossing curves on the upper half plane
from 0 to , whose law is influenced by additional force points on
. When there are force points away from the origin, the law of
SLE is not reversible as the ordinary chordal
SLE. Zhan (2019) give an explicit description of the law of the time
reversal of SLE when all force points lies on the
same sides of the origin, and conjectured that a similar result holds in
general. In this paper we prove his conjecture. In particular, based on Zhan's
result, using the techniques from the Imaginary Geometry developed by Miller
and Sheffield (2013), we show that when , the law of the time
reversal of non-boundary filling
process is absolutely continuous with respect to
for some
determined by , with the Radon-Nikodym derivative being a
product of conformal derivatives.Comment: 13 pages, 6 figure
Dark information of black hole radiation raised by dark energy
The "lost" information of black hole through the Hawking radiation was
discovered being stored in the correlation among the non-thermally radiated
particles [Phys. Rev. Lett 85, 5042 (2000), Phys. Lett. B 675, 1 (2009)]. This
correlation information, which has not yet been proved locally observable in
principle, is named by dark information. In this paper, we systematically study
the influences of dark energy on black hole radiation, especially on the dark
information. Calculating the radiation spectrum in the existence of dark energy
by the approach of canonical typicality, which is reconfirmed by the quantum
tunneling method, we find that the dark energy will effectively lower the
Hawking temperature, and thus makes the black hole has longer life time. It is
also discovered that the non-thermal effect of the black hole radiation is
enhanced by dark energy so that the dark information of the radiation is
increased. Our observation shows that, besides the mechanical effect (e.g.,
gravitational lensing effect), the dark energy rises the the stored dark
information, which could be probed by a non-local coincidence measurement
similar to the coincidence counting of the Hanbury-Brown -Twiss experiment in
quantum optics.Comment: 21 pages, 3 figures, complete journal-info of Ref.[4] is added,
comments are welcome ([email protected]
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