Register to reply 
Information Theory on Wave Function Collapse 
Share this thread: 
#1
Dec1612, 07:07 PM

P: 9

I was trying to understand wave function collapse in terms of superposition, but I ran into some problems when relating back to information theory/entropy. It is given in the definition of information in terms of entropy energy is needed to transfer information. That is something we have always been taught, but if that means information is associated with different eigenstates, what happens to the information associated with different collapse forms of a particle? Is it that there is no energy associated with the information of the superpositions of a particle, but if that were the case, how could those states exist in the first place? Perhaps the answer is in Schrödinger's equation. Any help is welcomed! Thanks.



#2
Dec1712, 11:56 AM

P: 755

Collapse only occurs during measurements, where additional degrees of freedom are introduced. The interaction with the measurement apparatus leads the initially pure state to a classical probabilistic mixture of states, which has a higher entropy (this is called "decoherence"). However, there is no universally accepted mechanism how a single outcome is chosen from this mixture. So I'm not sure, if there is a satisfying answer to your question. 


#3
Dec1712, 01:08 PM

P: 9

Alas I feel the same way, I cannot find definitive answer, however, could you answer this, mathematically, or logically? Is there energy associated with the different superpositions? If so, where does that energy go? I have a thought, but I'd like to hear others opinions first.



#4
Dec1712, 01:55 PM

P: 755

Information Theory on Wave Function Collapse



Register to reply 
Related Discussions  
Collapse of a wave function  Quantum Physics  10  
Wave function collapse  Quantum Physics  8  
Why does the which path information collapse the wave function?  Quantum Physics  33  
About wave function collapse  Quantum Physics  2  
What is a wave function and its collapse?  Quantum Physics  21 