Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Almost certain loss from black holes: critical comments on the black
  hole final state proposal   In this paper, we critically revisit the Horowitz-Maldacena proposal and its
generalization by Lloyd. In the original proposal, as well as in Lloyd's
generalization, Hawking radiation involves a pair of maximally entangled
quantum states in which the ingoing partner state and the collapsed matter form
either a maximally entangled pair or a Schmidt decomposed random state near the
singularity. We point out that the unitary matrix introduced in Lloyd's
fidelity calculation depends on initial matter states; hence, his result on the
high average fidelity may not represent an almost unitary evolution. In
opposition to Lloyd's conclusion, when we do not include the state-dependent
unitary matrix for the fidelity computation, we analytically and numerically
confirm that information will almost certainly be lost because the fidelity
will approach zero as the degrees of freedom increase.

9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
4
The categories of this paper are: cond-mat
6
The categories of this paper are: astro-ph
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin