Quantum Theory of What?. What does quantum theory describe?. In classical physics, we assume that objects exist objectively. Classical physics describes classical objects, which are those that are assumed to be directly observable with the human senses.
What does quantum theory describe?
Examples of classes of interpretations:
1. Statistical (predicts the probability distribution of the results of many observations on identical systems, not of a single observation. All other interpretations may apply to a single observation as well as to many).
2. Copenhagen with consciousness (objective wavefunction is collapsed by consciousness of observer to give a subjective result).
3. Copenhagen without consciousness (objective wavefunction is collapsed by some unknown objective process into classical physical state).
4. Hidden variables (classical particles, objective quantum force, no collapse, no consciousness).
5. Many worlds (objective wavefunction, no collapse, conscious observation mysteriously causes branching into many noncommunicating objective worlds).
6. Many minds (objective wavefunction, no collapse, conscious observation mysteriously causes branching into many noncommunicating objective brain states).
7. Transactional (objective wavefunction, no collapse, observer emits retarded wave that cancels advanced wave emitted by observed object).
8. Relational (subject and object represented by entangled objective wavefunctions, no collapse).
9. Mostly subjective (Christopher Fuchs) (external object but no objective wavefunction, quantum probabilities interpreted as subjective Bayesian probabilities).
1. Awareness would be the essential source, background, and substance of the mind.
2. There would be no external objective reality, and no objective time and space. (Objective reality implies separation between subject and object, and causes interpretation paradoxes.)
3. A major problem would be to find a mechanism by which Awareness is essential to the arising of the mind.
4. Quantum theory would describe the arising of subjective mind states (not brain states) in Awareness, plus the subjective process of decision making.
5. While a big step forward, the interpretation of Christopher Fuchs is a theory of subjective mind states that requires an external, objective system to be observed; but Awareness is only implied, not essential.