Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anisotropic quasiparticle lifetimes in Fe-based superconductors   We study the dynamical quasiparticle scattering by spin and charge
fluctuations in Fe-based pnictides within a five-orbital model with on-site
interactions. The leading contribution to the scattering rate is calculated
from the second-order diagrams with the polarization operator calculated in the
random-phase approximation. We find one-particle scattering rates which are
highly anisotropic on each Fermi surface sheet due to the momentum dependence
of the spin susceptibility and the multi-orbital composition of each Fermi
pocket. This fact, combined with the anisotropy of the effective mass, produces
disparity between electrons and holes in conductivity, the Hall coefficient,
and the Raman initial slope, in qualitative agreement with experimental data.

18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph