|
related topics |
{time, wave, function} |
{field, particle, equation} |
{particle, mechanics, theory} |
{spin, pulse, spins} |
{group, space, representation} |
{phase, path, phys} |
|
Spin dependent observable effect for free particles using the arrival
time distribution
Md. Manirul Ali, A. S. Majumdar, D. Home, S. Sengupta
abstract: The mean arrival time of free particles is computed using the quantum
probability current. This is uniquely determined in the non-relativistic limit
of Dirac equation, although the Schroedinger probability current has an
inherent non-uniqueness. Since the Dirac probability current involves a
spin-dependent term, an arrival time distribution based on the probability
current shows an observable spin-dependent effect, even for free particles.
This arises essentially from relativistic quantum dynamics, but persists even
in the non-relativistic regime.
- oai_identifier:
- oai:arXiv.org:quant-ph/0306106
- categories:
- quant-ph
- comments:
- 5 Latex pages, 2.eps figures; discussions sharpened and references
added; accepted for publication in Physical Review A
- doi:
- 10.1103/PhysRevA.68.042105
- arxiv_id:
- quant-ph/0306106
- journal_ref:
- Phys. Rev. A68, 042105 (2003)
- created:
- 2003-06-16
- updated:
- 2003-09-15
Full article ▸
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