Imaging electron motion with attosecond time resolution

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What is χ(k,ω) χ(k,ω) : • density-density Green’s function • density propagator • susceptibility Describes how disturbances in electron density travel about the medium. (x,t) Causality Same as a pump-probe experiment. Dynamics is dynamics (0,0)
“Phase problem” and the arrow of time Cannot invert with only Im[χ(k,ω)] Im[ω] × × × × × × × × × Re[ω] × × × × × × × × × • χ(x,t) = 0 for t < 0 • Raw spectra do not really describe dynamics – no causal information • Must assign an arrow of time to the problem. Permits retrieval of χ(x,t) – view dynamics explicitly.
Page 1 and 2: Imaging electron motion with attose
Page 3 and 4: Attoscience Reproduced from Dresche
Page 5 and 6: Why not energy domain - photoabsorp
Page 7: Inelastic x-ray (or n + or e - ) sc
Page 11 and 12: Plasma oscillations in water - Im[
Page 13 and 14: Problems Problem #2: Discrete point
Page 15 and 16: Disturbance from a point perturbati
Page 17 and 18: Compound sources (x,t) (x 0 ,0) (x
Page 19 and 20: Compound sources - wake from 9 MeV
Page 21 and 22: Alkali halides - an intermediate ca
Page 23 and 24: Result
Page 25 and 26: Isolating the exciton g gap B ( ω)
Page 27 and 28: Wannier functions (Ku, et. al.)
Page 29 and 30: Homogeneous vs. homogeneous broaden

Imaging electron motion with attosecond time resolution

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