Ismael Notes

# Ismael Notes - Philosophy of Physics February 16, 2012...

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Philosophy of Physics February 16, 2012 Ismael (Quantum Probability; chance) Notes - Quantum mechanics “provides the link between the fundamental level of physical description and the measurement world” - Quantum probability (AKA chance) has been hard to define because of the undefined constraints (they’re only partially definitive of the concept) Quantum Mechanics - Born’s Rule: the chances that a measurement on the system would yield a given result - t = time, e = event (“what is the chance of e at t?”) o if e’s at t or in t’s past, it’ll have probability 0 or 1 o if it’s in the future, it will have any real value in the open interval between 0 and 1 o 0 or 1 at p → retains that value for all times after Events that happened in the past or are currently happening will consistently remain at the same value for that very reason - Principal Principle (David Lewis) Constraint o “all we know about the concept of chance” - Bernoulli’s Law relates indefinite probabilities to frequencies o Quantitative Constraints: if the event is 0 or 1 (meaning it’s happened or is happening) will always remain 0 or 1 in the subsequent future

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## This note was uploaded on 02/16/2012 for the course PHILOSOPHY 375 taught by Professor Heatherdemarest during the Spring '12 term at Rutgers.

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Ismael Notes - Philosophy of Physics February 16, 2012...

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