Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Holographic de Sitter Universe   We propose to embed de Sitter space into five dimensional anti-de Sitter
space to compute some physical quantities of interest, using the AdS/CFT
correspondence. The static de Sitter can be considered as the conformal
structure of the boundary of the hyperbolic AdS5 with a horizon, thus energy as
well as entropy can be computed. The global dS can be embedded into a
half-global AdS5, and the dS entropy can be regarded as entanglement entropy in
this case. Finally, the inflationary dS can also be regarded as the boundary of
AdS5, and this can be extended to include general cosmology with a positive
cosmological constant, however at the price of introducing a naked null
singularity in the bulk unless the cosmology is pure de Sitter space.

20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat