Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Can pulsational instabilities impact a massive star's rotational
  evolution?   We investigate whether angular momentum transport due to unstable pulsation
modes can play a significant role in the rotational evolution of massive stars.
We find that these modes can redistribute appreciable angular momentum, and
moreover trigger shear-instability mixing in the molecular weight gradient zone
adjacent to stellar cores, with significant evolutionary impact.

33
The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex