Micron sized object observed in quantum state

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A recent discussion centers on a claim that a 40-micron resonator has been set into a superposition of states, which could provide insights into the quantum-classical boundary. While some participants find this fascinating, others argue that the existence of a "quantum-classical border" is a misconception, emphasizing that any system can be in superposition regardless of size. The conversation also touches on the implications of quantum decoherence, with some asserting that it does not equate to wave function collapse, and that interpretations of quantum mechanics should evolve as new phenomena are observed. Overall, the experiment is seen as impressive but not surprising to those familiar with the field, as similar experiments have been conducted previously. The ongoing debate highlights the complexities of quantum mechanics and the interpretations surrounding it.
  • #31
yoda jedi said:
right, quantum mechanics is demonstrated, like say you; unsurprising, foreseeable, expected.
but what is really at stake, is, the standard quantum mechanics vs nonlinear quantum mechanics, not the superposition itself (per se), but the time of the superposition vs the time of decoherence, if last more or less; if last less, nonlinear model are the correct, if last more, linear models are.
from various sources there is growing evidence for nonlinear models (specific tests must be developed for them, to see which one is the correct).

Dmitry67 said:
it as a test of objective collapse theories?

for nonlinear quantum mechanics.
the next experiments.

The Vienna Experiment, Nature 460 724, Nature Physics 5 485. 2009.
The CalTech Experiment, http://www.kschwabresearch.com/articles/detail/8 , http://media.caltech.edu/press_releases/13271
The LIGO Science Collaboration Experiment, New J. Phys. 11 073032 2009.

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