Semiclassical dynamics of a spin-1/2 in an arbitrary magnetic field

Details Semiclassical dynamics of a spin-1/2 in an arbitrary magnetic field Semiclassical dynamics of a spin-1/2 in an arbitrary magnetic field

1999-04-29

arxiv.org/abs/quant-ph/9904102v1

J.Phys.A32:4907-4919,1999

Physics

Quantum Physics

16 pages, submitted to Journal of Physics A

Scientific paper

10.1088/0305-4470/32/26/309

The spin coherent state path integral describing the dynamics of a spin-1/2-system in a magnetic field of arbitrary time-dependence is considered. Defining the path integral as the limit of a Wiener regularized expression, the semiclassical approximation leads to a continuous minimal action path with jumps at the endpoints. The resulting semiclassical propagator is shown to coincide with the exact quantum mechanical propagator. A non-linear transformation of the angle variables allows for a determination of the semiclassical path and the jumps without solving a boundary-value problem. The semiclassical spin dynamics is thus readily amenable to numerical methods.

Affiliated with

Also associated with

No associations

Rating

Semiclassical dynamics of a spin-1/2 in an arbitrary magnetic field 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 Semiclassical dynamics of a spin-1/2 in an arbitrary magnetic field, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiclassical dynamics of a spin-1/2 in an arbitrary magnetic field will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-680189