Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Band-edge quasiparticles from electron phonon coupling and resistivity
  saturation   We address the problem of resistivity saturation observed in materials such
as the A-15 compounds. To do so, we calculate the resistivity for the
Hubbard-Holstein model in infinite spatial dimensions to second order in
on-site repulsion $U\leq D$ and to first order in (dimensionless)
electron-phonon coupling strength $\lambda\leq0.5$, where $D$ is the
half-bandwidth. We identify a unique mechanism to obtain two parallel quantum
conducting channels: low-energy and band-edge high-energy quasi-particles. We
identify the source of the hitherto unremarked high-energy quasi-particles as a
positive slope in the frequency-dependence of the real part of the electron
self-energy. In the presence of phonons, the self-energy grows linearly with
the temperature at high-$T$, causing the resistivity to saturate. As $U$ is
increased, the saturation temperature is pushed to higher values, offering a
mechanism by which electron-correlations destroy saturation.

15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg