Density matrices were specifically what I had in mind when I talked about dragging in great big complicated math tools before people understand what’s going on at a fundamental level.
I didn’t know mixed states were a battleground, but it’s pretty easy to imagine. Confusion about the subjective Bayesian character of statistical mechanics + confusion about the objective character of quantum states = extreme confusion about mixed states, right?
Density matrices were specifically what I had in mind when I talked about dragging in great big complicated math tools before people understand what’s going on at a fundamental level.
I didn’t know mixed states were a battleground, but it’s pretty easy to imagine. Confusion about the subjective Bayesian character of statistical mechanics + confusion about the objective character of quantum states = extreme confusion about mixed states, right?