Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Inflation and the Fine-Tuning Problem   I describe a recently derived stochastic approach to inflaton dynamics which
can address some serious problems associated with conventional inflationary
theory. Using this theory I derive an exact solution to the stochastic dynamics
for the case of a $\lambda\phi^4$ potential and use it to study the generated
primordial density fluctuations. It is found that on both sub and super-horizon
scales the theory predicts gaussian fluctuations to a very high accuracy along
with a near scale-invariant spectrum. Of most interest is that the amplitude
constraint is found to be satisfied for $\lambda\sim 10^{-5}$ rather than
$\lambda\sim 10^{-14}$ of the conventional theory. This represents a dramatic
easing of the fine-tuning constraints, a feature likely to generalize to a wide
range of potentials.

21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th