Other small but not yet quantum motors
Enzyme powered rotating
Single molecule motor
with hydrogen-carbon chain rotor and sulfur-copper bearing powered by tunneling microscope
Molecular B13+ infrared ionic conductivity bicycle motor with chain powered
by the CP field with 13:1 derailleur in asymmetric Wankel configuration
Carbon nanotube bearing nanomotor powered by exchage of surface
electrons angular momentum
Other quantum but not electric motors
Brownian motors - climbing with fluctuations
Carbon nanotube steam locomotive-like nanomotor powered by
Like the model trains initailly localized wave packets will
move on periodic trajectories like on a track
unstable trajectories and not dispersing on locally stable
While all trajectories are points in a certain
instatenous rotating frame and the WKB wave functions spike
singularly around the turning points of zero velocity
there must be localized eignstates there around
to phase interfere.
The locally rotating frame augmented to the trajectory
tangent circle may be used to study adiabatic stability.
I am looking for various iteresting, for example 8-shaped trajectories
which can support on-average nonspreading Trojan-like wave packets.
Triangle, square and general polygon trajectories are possible
in atoms in combination magnetic and electromagnetic fields for one and more electrons.
Interested in selected exotic eigenstates,
I am currently working on Monte Carlo genetic algorithm implementation
of fixed node method. The nodal constrains are tossed randomly and
than the genetic operations are performed on best nodal populations
to produce better energy estimate of selected excited states and so on.
You can also use it with tossed-node imaginary-time split operator method
Studying the time dependent free dynamics of the Trojan wave packets after the sudden field turn-off I have
recently discovered that the full quantum revival occurs in any quantum
system with the rational energies and therefore asymptotically in near-ifininity in any quantum system.
Thus it is equivalent to the Poincare revival. While the normal revival considerations
expand the spectra up to be harmonic or quadratic as for the quantum well for the Trojan
wave packet the validity of expansion is equivalent to the expansion truncation.
Depending on the number of states involved in the time evolution expansion the exact revival time
of the Trojan wave packet becomes the Poincare when it is as long as non-physical on the Earth
laboratory time scale.