All Questions
Tagged with anticommutator observables
3
questions
0
votes
0
answers
86
views
Relationship between anti-commutators and correlation
Ballentine (in his solution at the back of the book to his Problem 8.10) writes that
$$[Tr(\rho \{A,B\}/2)]^2$$
is related to the correlation between the observables represented by $A,B$, but gives no ...
- 1,095
1
vote
1
answer
139
views
Measurements, QFT and Wightman's axiom 3
I think I might have misconceptions about the conceptual core of QFT. Let me explain where I am puzzled.
In QM, the measurement process is accounted by the postulate of collapse of the wave function: ...
- 507
59
votes
7
answers
94k
views
What is the Physical Meaning of Commutation of Two Operators?
I understand the mathematics of commutation relations and anti-commutation relations, but what does it physically mean for an observable (self-adjoint operator) to commute with another observable (...
- 813