Quantum state
A state encodes amplitudes for possible measurement outcomes.
Established physics
The geometry is illustrative. It is not a picture of microscopic objects moving through ordinary space.
Change the conditions
Push on the model.
local visibility51.9%
environment overlap0.519
system purity0.635
global ideal purity1.000
Teaching parameterization: each environment fragment has overlap cos(1.2 g), so the total overlap is cos(1.2 g)^N. The joint state is treated as pure and unitary in this idealized finite model.
What this stage means
One state, several possible outcomes.
Correlation console
A Bell pair is one joint state.
Choose measurement bases for the ideal Bell state |Phi+> = (|00> + |11>)/sqrt(2). The panel shows the ideal joint probabilities predicted by quantum mechanics.
0,050%
0,10%
1,00%
1,150%
Same-basis measurements are perfectly correlated in this idealized state. This panel alone is not a Bell-inequality test.
Questions worth carrying forward
Physics becomes interesting at the boundaries between descriptions.
If local interference disappears, where is the phase information now encoded?
When many environmental fragments carry similar records, why does one effective classical history become so useful?
How much microscopic detail can be discarded while predictions remain accurate?
What changes when gravity itself must be treated quantum mechanically?
Which features of a theory are representation-dependent, and which are invariant?