• Corpus ID: 239768790

Nonlinear electronic density response of the warm dense electron gas: multiple perturbations and mode coupling

@inproceedings{Dornheim2021NonlinearED,
  title={Nonlinear electronic density response of the warm dense electron gas: multiple perturbations and mode coupling},
  author={Tobias Dornheim and Jan Vorberger and Zhandos A. Moldabekov and Michael Bonitz},
  year={2021}
}
We present extensive new ab initio path integral Monte Carlo (PIMC) results for an electron gas at warm dense matter conditions that is subject to multiple harmonic perturbations. In addition to the previously investigated nonlinear effects at the original wave number [Dornheim et al., PRL 125, 085001 (2020)] and the excitation of higher harmonics [Dornheim et al., PRR 3, 033231 (2021)], the presence of multiple external potentials leads to mode-coupling effects, which constitute the dominant… 
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