A Non-classical Feature, 2
~ linear overlapping
~ f(ax + by) = a f(x) + b f(y)
Reality is a linear overlapping of potential realities, although different components may have different weightings.
Superposition always exists, if it exists at the beginning of a process.
So the expression “the wave function collapses and the superposition ceases to exist” does not make sense.
Superposition always exists; interference (pattern) does not.
For a superposition to have an interference pattern, the two (for example) component eigenstates need to have a constant phase difference.
In other words, they have to be coherent.
superposition without an interference pattern
~ microscopically decoherent component states
~ macroscopically a classical state
— Me@2016-09-01 4:42 AM
The above is not correct.
A quantum superposition is not just an overlapping of classical states, because if it is, for example, there would be no interference patterns formed in the double-slit experiment. If a quantum superposition is just an overlapping of classical worlds, how can you explain the destructive interference part?
— Me@2020-12-19 07:19:08 PM
2016.11.27 Sunday (c) All rights reserved by ACHK