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kiru
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What is 'Hidden Variable theory?
This is poorly phrased, it would probably be better to say something like:It is the idea that the behavior of quantum particles is actually determined by even smaller particles (or something) that we've not yet detected. Probably the most popular example is quantum entanglement.
This is a common misconception or, at best very misleading. It is only true for an unusual notion of effect. (If you pull a shoe out of a shoe box, does noticing it is the right show cause the other shoe in the box to be the left one?)Yet, altering the state of one of the pair can have an effect on the other.
Hidden Variable Theory is a theoretical framework that attempts to explain the apparent randomness and unpredictability of quantum mechanics by proposing the existence of additional, unobservable variables that determine the behavior of quantum particles. These variables are thought to exist alongside the observable properties of particles, such as position and momentum, and act as a hidden influence on their behavior.
Hidden Variable Theory differs from other interpretations, such as the Copenhagen interpretation, by suggesting that quantum particles do have definite, predetermined properties, rather than being purely probabilistic. It also proposes that these properties can be determined by hidden variables, rather than being fundamentally unknowable.
There is currently no direct evidence either supporting or contradicting Hidden Variable Theory. However, it is not favored by the majority of physicists, as it has not been able to account for certain experimental observations, such as the Bell's inequality theorem. Additionally, the theory has been shown to violate certain principles of relativity.
At present, there is no known way to test or prove Hidden Variable Theory. As a theoretical framework, it is difficult to falsify, but it also lacks the ability to make specific, testable predictions. Therefore, it remains a topic of ongoing debate and investigation in the field of quantum mechanics.
Hidden Variable Theory is often associated with a deterministic view of the universe, as it proposes that the behavior of quantum particles is predetermined. However, this does not necessarily mean that everything in the universe is predetermined. Some versions of Hidden Variable Theory, such as Bohmian mechanics, still allow for the possibility of free will and randomness in other areas of the universe.