Optical response of many-polaron systems
G. Wellein, A. R. Bishop, M. Hohenadler, G. Schubert, H. Fehske
TL;DR
This paper presents exact calculations of the density of states and ac conductivity in many-polaron systems using advanced numerical methods, providing insights into their optical properties at finite carrier densities.
Contribution
It introduces a novel combination of Lanczos and kernel polynomial methods to accurately analyze the optical response of many-polaron systems.
Findings
Exact density of states obtained
Accurate ac conductivity results
Enhanced understanding of optical properties
Abstract
Exact results for the density of states and the ac conductivity of the spinless Holstein model at finite carrier density are obtained combining Lanczos and kernel polynomial methods.
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