Non-linear phenomena in time-dependent density-functional theory: What Rabi physics can teach us

Details Non-linear phenomena in time-dependent density-functional theory: What Rabi physics can teach us Non-linear phenomena in time-dependent density-functional theory: What Rabi physics can teach us

2011-01-14

arxiv.org/abs/1101.2880v2

Phys. Rev. B 84, 075107 (2011)

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

10.1103/PhysRevB.84.075107

Through the exact solution of a two-electron system interacting with a monochromatic laser we prove that all adiabatic density functionals within time-dependent density-functional theory are not able to discern between resonant and non-resonant (detuned) Rabi oscillations. This is rationalized in terms of a fictitious dynamical exchange-correlation (xc) detuning of the resonance while the laser is acting. The non-linear dynamics of the Kohn-Sham system shows the characteristic features of detuned Rabi oscillations even if the exact resonant frequency is used. We identify the source of this error in a contribution from the xc-functional to the non-linear equations describing the electron dynamics in an effective two-level system. The constraint of preventing the detuning introduces a new strong condition to be satisfied by approximate xc-functionals.

Affiliated with

Also associated with

No associations

Rating

Non-linear phenomena in time-dependent density-functional theory: What Rabi physics can teach us does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Non-linear phenomena in time-dependent density-functional theory: What Rabi physics can teach us, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-linear phenomena in time-dependent density-functional theory: What Rabi physics can teach us will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-79823