Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Finite Size Effect in Persistence   We have investigated the random walk problem in a finite system and studied
the crossover induced in the the persistence probability scales by the system
size.Analytical and numerical work show that the scaling function is an
exponentially decaying function.The particle here is trapped with in a box of
size $L$ . We have also considered the problem when the particle in trapped in
a potential. Direct calculation and numerical result show that the scaling
function here also an exponentially decaying function. We also present
numerical works on harmonically trapped randomly accelerated particle and
randomly accelerated particle with viscous drag.

11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph