Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Vanishing Dimensions in Four Dimensional Cosmology with Nonminimal
  Derivative Coupling of Scalar Field   We discussed a mechanism that allows the universe to start from lower
dimension ($d < 4$) in its very early era and evolves to four dimension at the
end of the process. The mechanism is generated by a nonminimal derivative
coupling of scalar field, where derivative terms of the scalar field coupled to
curvature tensor. We solve the Einstein equations for a limit of large and
nearly constant Hubble parameter and analyze the evolution of the Hubble
parameter in this limit. The lower-dimensionality in early universe has
advantages in the context of unification theory.

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The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
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The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
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The categories of this paper are: eess