Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Scaling and Small Scale Structure in Cosmic String Networks   We examine the scaling properties of an evolving network of strings in
Minkowski spacetime and study the evolution of length scales in terms of a
3-scale model proposed by Austin, Copeland and Kibble (ACK). We find good
qualitative and some quantitative agreement between the model and our
simulations. We also investigate small-scale structure by altering the minimum
allowed size for loop production E_c. Certain quantities depend significantly
on this parameter: for example the scaling density can vary by a factor of two
or more with increasing E_c. Small-scale structure as defined by ACK disappears
if no restrictions are placed on loop production, and the fractal dimension of
the string changes smoothly from 2 to 1 as the resolution scale is decreased.
Loops are nearly all produced at the lattice cut-off. We suggest that the
lattice cut-off should be interpreted as corresponding to the string width, and
that in a real network loops are actually produced with this size. This leads
to a radically different string scenario, with particle production rather than
gravitational radiation being the dominant mode of energy dissipation. At the
very least, a better understanding of the discretisation effects in all
simulations of cosmic strings is called for.

17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol
24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org