Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hybrid Inflation and Particle Physics   The prototype hybrid SUSY SU(5) inflation models, while well motivated from
particle physics, and while allowing an acceptable inflationary phase with
little or no fine tuning, are shown to have two fundamental phenomenological
problems. (1) They inevitably result in the wrong vacuum after inflation is
over; and (2) they do not solve the monopole problem. In order to get around
the first problem the level of complexity of these models must be increased.
One can also avoid the second problem in this way. We also demonstate another
possibility by proposing a new general mechanism to avoid the monopole problem
with, or without inflation.

8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol