Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Holographic time-dependent entanglement entropy in $p$-brane gas
  geometries   We investigate holographic cosmologies appearing in the braneworld model with
a uniformly distributed $p$-brane gas. When $p$-branes extend to the radial
direction, an observer living in the brane detects $(p-1)$-dimensional extended
objects. On this background, we show that the braneworld model reproduces the
expanding universes of the standard cosmology. In an expanding universe with a
matter, we investigate the entanglement entropy between the visible and
invisible universes across the cosmological (or particle) horizon. We show
that, though the visible and invisible universes are causally disconnected, the
nonlocal quantum correlation gives rise to a nontrivial time-dependent
entanglement entropy relying on the matter.

25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
16
The categories of this paper are: stat
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int