Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cosmic Equilibration: A Holographic No-Hair Theorem from the Generalized
  Second Law   In a wide class of cosmological models, a positive cosmological constant
drives cosmological evolution toward an asymptotically de Sitter phase. Here we
connect this behavior to the increase of entropy over time, based on the idea
that de Sitter spacetime is a maximum-entropy state. We prove a cosmic no-hair
theorem for Robertson-Walker and Bianchi I spacetimes that admit a Q-screen
("quantum" holographic screen) with certain entropic properties: If generalized
entropy, in the sense of the cosmological version of the Generalized Second Law
conjectured by Bousso and Engelhardt, increases up to a finite maximum value
along the screen, then the spacetime is asymptotically de Sitter in the future.
Moreover, the limiting value of generalized entropy coincides with the de
Sitter horizon entropy. We do not use the Einstein field equations in our
proof, nor do we assume the existence of a positive cosmological constant. As
such, asymptotic relaxation to a de Sitter phase can, in a precise sense, be
thought of as cosmological equilibration.

9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs