Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Influence of Exchange Scattering on Superfluid He-3 states in Nematic
  Aerogel   The superfluid state in bulk liquid $^3$He is realized in the form of A or B
phases. Uniaxially anisotropic aerogel (nafen) stabilizes transition from the
normal to the polar superfluid state which on further cooling transitions to
the axipolar orbital glass state (Phys. Rev. Lett. {\bf 115}, 165304 (2015)).
This is the case in nafen aerogel preplated by several atomic layers of $^4$He.
When pure liquid $^3$He fills the same nafen aerogel a solid-like layer of
$^3$He atoms coats the aerogel structure. The polar state is not formed anymore
and a phase transition occurs directly to the axipolar phase (Phys. Rev. Lett.
{\bf 120}, 075301 (2018). The substitution of $^4$He by $^3$He atoms at the
aerogel surface changes the potential and adds the exchange scattering of
quasiparticles on the aerogel strands. A calculation shows that both of these
effects can decrease the degree of anisotropy of scattering and suppress the
polar phase formation. The derived anisotropy of the spin diffusion coefficient
in globally anisotropic aerogel is determined by the same parameter which
controls the polar state emergence which allows one to check the effect of
anisotropy change for different types of covering.

23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph