报告摘要：
Information is physical, a founding principle for information science that
is among the most characteristic features of our modern day life. In both
classical and quantum world, information cannot appear or disappear as
governed by conservation laws of physics. This is questioned, however, for a
black hole by the so-called “information loss paradox”, which is one of the
liveliest questions in physics right now.

Recently, we have presented a resolution to the paradox of black hole
information loss [1, 2]. In this talk, we present new insights to the
paradox, proving that information conservation is universal for any closed
system, including a black hole. We prove the total information encoded in
the Hawking radiations is exactly equal to the amount previously considered
lost, according to the non-thermal spectrum by Parikh and Wilczek. Thus, the
paradox is resolved that denotes a unified theory of quantum gravity may be
emerging.

References:

[1] B. Zhang, Q-Y Cai, L.You, and M S Zhan, Hidden messenger revealed in
Hawking radiation: A resolution to the paradox of black hole information
loss. Phys. Lett. B 675, 98-101 (2009).

[2] B. Zhang, Q-Y Cai, M S Zhan and L.You, No information is lost: A revisit
of the paradox of black hole information poss. arXiv: 0906.5033.