Time reversal Definition and 57 Threads

I have a question, in Time Reversal operator, does an external magnetic field would get a minus sign, I guess that yes cause it changes direction, i.e if it's directed orthogonal to the surface then after time reversal I think it will direct anti-orthogonal to the surface, in Parity I don't...

Let me propose a list of principles of classical dynamics, specifically designed for education, for introduction to novices: - In the absence of any force: objects in motion move along straight lines, covering equal distances in equal intervals of time - Composition of motion: position...

The Born rule says that if a system is prepared in state |a>, and a measurement of an observable Q is performed, the probability that the result is qi is P(q_i)=|\langle q_i|a\rangle|^2 The ABL rule (Aharonov, Bergmann, Lebowitz) says that if a system is prepared in state |a>, and a...

Under time reversal T, the momentum operator changes sign but the position operator remains the same. So if you have a Hamiltonian of the form H(X,P)=P^2 + V(X) , then it's invariant under time reversal since momentum is squared. This means H and T commute, so that if a state has eigenvalue E of...

Ok, so if you have two electrons near one another, they will start to repel one another and separate as time goes on. Now if you reverse time, they will move towards one another. But it is said that antimatter can be viewed as matter going backwards through time. Now if this is true, this would...

How time reversal of wave function and 2nd law of thermodynamics of entropy are settle together?

Found this article via google. I suspect this is real, but all the talk about time reversal and and time-energy got me wondering, since I've never heard about anything like that before (although it does sound cool)... what do you think?