Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Emergent Universe and Phantom Tachyon Model   In this work, I have considered that the universe is filled with normal
matter and phantom field (or tachyonic field). If the universe is filled with
scalar field, Ellis et al have shown that emergent scenario is possible only
for $k=+1$ i.e. for closed universe and here I have shown that the emergent
scenario is possible for closed universe if the universe contains normal
tachyonic field. But for phantom field (or tachyonic field), the negative
kinetic term can generate the emergent scenario for all values of $k ~(=0,\pm
1)$. From recently developed statefinder parameters, the behaviour of different
stages of the evolution of the emergent universe have been studied. The static
Einstein universe and the stability analysis have been briefly discussed for
both phantom and tachyon models.

28
The categories of this paper are: alg-geom
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
10
The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
2
The categories of this paper are: math
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th