B Does Cutting an Object Affect Its Hilbert Space or Quantum State?

oquen
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When you cut an object with a knife.. say a sausage. Does it's Hilbert Space or Quantum State split into two too? Or is it like in a holographic film.. in which even after cutting it, all the original image is in each of the cut portion?
 
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oquen said:
When you cut an object with a knife.. say a sausage. Does it's Hilbert Space or Quantum State split into two too? Or is it like in a holographic film.. in which even after cutting it, all the original image is in each of the cut portion?

You may get a better answer, but I'm not sure it's helpful to think of a sausage as a quantum object!
 
oquen said:
When you cut an object with a knife.. say a sausage. Does it's Hilbert Space or Quantum State split into two too? Or is it like in a holographic film.. in which even after cutting it, all the original image is in each of the cut portion?
A Hilbert space is a mathematical abstraction, not any sort of physical space that can be cut and divided. Objects don't "have" or occupy Hilbert spaces, and there is no correspondence between the parts of an object and the elements of the Hilbert space we're using in our computations.

Unfortunately, all of this about how a Hilbert space isn't what you're thinking it is doesn't help much with explaining what a Hilbert really is. For that, you need a college-level intro QM text.
 
Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. Towards the end of the first lecture for the Qiskit Global Summer School 2025, Foundations of Quantum Mechanics, Olivia Lanes (Global Lead, Content and Education IBM) stated... Source: https://www.physicsforums.com/insights/quantum-entanglement-is-a-kinematic-fact-not-a-dynamical-effect/ by @RUTA
If we release an electron around a positively charged sphere, the initial state of electron is a linear combination of Hydrogen-like states. According to quantum mechanics, evolution of time would not change this initial state because the potential is time independent. However, classically we expect the electron to collide with the sphere. So, it seems that the quantum and classics predict different behaviours!
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