Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Numerical calculation of free-energy barriers for entangled polymer
  nucleation   The crystallisation of entangled polymers from their melt is investigated
using computer simulation with a coarse-grained model. Using hybrid Monte Carlo
simulations enables us to probe the behaviour of long polymer chains. We
identify solid-like beads with a centrosymmetry local order parameter and
compute the nucleation free-energy barrier at relatively high supercooling with
adaptive-bias windowed umbrella sampling. Our results demonstrate that the
critical nucleus sizes and the heights of free-energy barriers do not
significantly depend on the molecular weight of the polymer; however, the
nucleation rate decreases with increasing molecular weight. Moreover, an
analysis of the composition of the critical nucleus suggests that
intramolecular growth of the nucleated cluster does not contribute
significantly to crystallisation for this system.

13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys