Many-body Green's function approach to attosecond nonlinear X-ray spectroscopy

Abstract

Closed expressions are derived for resonant multidimensional X-ray spectroscopy using the quasiparticle nonlinear exciton representation of optical response. This formalism is applied to predict coherent four wave mixing signals which probe single and two core-hole states. Nonlinear X-ray signals are compactly expressed in terms of one- and two- particle Green's functions which can be obtained from the solution of Hedin-like equations at the $GW$ level.

10 pages and 3 figures (To appear in Physical Review B)

References in corpus (8)

• The GW method
• Ab initio calculation of excitonic effects in the optical spectra of semiconductors
• Tracing ultrafast interatomic electronic decay processes in real time and space
• Multiple Core-Hole Coherence in X-Ray Four-Wave-Mixing Spectroscopies
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• Double-quantum-coherence attosecond x-ray spectroscopy of spatially separated, spectrally overlapping core-electron transitions
• Exciton spectroscopy of hexagonal boron nitride using non-resonant x-ray Raman scattering
• Time-domain chirally-sensitive three-pulse coherent probes of vibrational excitons in proteins