Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A New Mechanism for the Alpha to Omega Martensitic Transformation in
  Pure Titanium   We propose a new direct mechanism for the pressure driven alpha to omega
martensitic transformation in pure titanium. A systematic algorithm enumerates
all possible mechanisms whose energy barriers are evaluated. A new, homogeneous
mechanism emerges with a barrier at least four times lower than other
mechanisms. This mechanism remains favorable in a simple nucleation model.

33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an