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| related topics |
| {particle, mechanics, theory} |
| {time, decoherence, evolution} |
| {classical, space, random} |
| {energy, gaussian, time} |
| {measurement, state, measurements} |
| {phase, path, phys} |
| {time, wave, function} |
| {theory, mechanics, state} |
| {equation, function, exp} |
| {field, particle, equation} |
| {spin, pulse, spins} |
| {level, atom, field} |
| {state, phys, rev} |
| {entanglement, phys, rev} |
|
Stern-Gerlach Experiment and Bohm Limit
Marco Frasca
abstract: Stern-Gerlach experiment is a paradigm of measurement theory in quantum
mechanics. Notwithstanding several analysis given in literature, no clear
understanding of the apparent collapse has been given so far. Indeed, one can
imagine a Stern-Gerlach device where all environmental effects are removed and
ask the question on how the measurement goes on. In this letter we will prove
that a the Stern-Gerlach device behaves as a true measurement apparatus, as
expected by the Copenaghen interpretation, by the Ehrenfest theorem. In this
way we recover, by other means, a limit on the Stern-Gerlach device, given by
Bohm, based on scrambling of phases due to a large oscillation frequency.
- oai_identifier:
- oai:arXiv.org:quant-ph/0402072
- categories:
- quant-ph
- comments:
- 6 pages, no figures
- arxiv_id:
- quant-ph/0402072
- created:
- 2004-02-10
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