Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Black-to-White Hole Scenario: Foundation and Evaporation   A theory of quantum gravity is expected to change profoundly our
understanding of black holes. Quantum theory has already shown, as a first
approximation, that a black hole slowly evaporates. Non-perturbative quantum
gravity also predicts that such an object could metamorphose into a white hole,
its time-reverse. In this thesis, we study the foundations of such a scenario
and propose a mathematical model that includes the phenomenon of evaporation.

28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
19
The categories of this paper are: eess
4
The categories of this paper are: cond-mat
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph