Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The parameter space for tree-level hybrid inflation   In a large region of parameter space, the tree-level hybrid inflation model
is likely to be be invalidated by loop corrections. In particular, this is
likely to be the case if both quartic couplings are of order unity, as is often
supposed. It is likely also to be the case if there is an ultra-violet cutoff
far below the Planck scale, ($\luv\lsim 10^9\GeV(V_0^{1/4}/1\MeV)^{2/5}$, where
$V_0$ is the height of the potential) unless one allows field values bigger
than the cutoff.

25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph