Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Formation of a metastable phase due to the presence of impurities   Phase transitions into a new phase that is itself metastable are common;
instead of the equilibrium phase nucleating a metastable phase does so. When
this occurs the system is sometimes said to be obeying Ostwald's rule. We show
how this can happen when there are impurities present that reduce the barrier
to heterogeneous nucleation of the metastable phase. We do so by studying a
Potts lattice model using Monte Carlo simulation. Thus, which phase forms
depends not only on the properties of the different phases but also on the
impurities present. Understanding why systems obey Ostwald's rule may therefore
require a study of the impurities present.

8
The categories of this paper are: hep-ex
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th