Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: De Sitter Spacetime from Holographic Flat Spacetime with Inexact Bulk
  Quantum Mechanics   We argue that the flat spacetime with inexact quantum mechanics in it is dual
to the de Sitter spacetime with exact quantum mechanics in it, and the positive
cosmological constant of this de Sitter spacetime is in the second order of the
degree of the violation of the bulk quantum mechanics in the flat spacetime.
The flat spacetime is holographic and has a dual time-contracted conformal
field theory. The vanishing smallness of the observed positive cosmological
constant suggests the extraordinary exactness of the bulk quantum mechanics in
the flat spacetime.

10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci