0:00:02 | on the basis nets and time symmetrical we measurements |
---|
0:00:07 | everybody knows the direction of that from the past so but you |
---|
0:00:15 | but what would be different at the time or backward |
---|
0:00:21 | the microscopic work is invariant under time reversal if you invert the velocities and the |
---|
0:00:27 | motion looks natural and is described my best same equations |
---|
0:00:34 | in contrast to the microscope reverse ability macroscopic processes are usually irreversible because of the |
---|
0:00:41 | second vowel herman i not |
---|
0:00:44 | only the dynamics of work will address space is irreversible that's what was done on |
---|
0:00:49 | microscopic or equilibrium systems |
---|
0:00:54 | we gather information about the state of a system by measurements |
---|
0:00:59 | a generic measurement skiing this sequence of that vector preparation in standing direction would assist |
---|
0:01:05 | them and try not to read out |
---|
0:01:11 | most measurements than classic are and basically we just of assistant |
---|
0:01:16 | is that there might and power off time |
---|
0:01:23 | but if we decrease the string corpora measure and then it will be less and |
---|
0:01:27 | less is there such a week measurement is the not in a c t expensive |
---|
0:01:33 | to large uncertainty in the measurement |
---|
0:01:40 | in the limit we obtain the idea non-invasive measurement |
---|
0:01:48 | imagine our system in a stationary time symmetrically equilibrium state if you measure not basically |
---|
0:01:55 | quantity three subsequent times separated by two one and he tool |
---|
0:02:03 | then the time reversal operation would be equivalent to swiping q one and t two |
---|
0:02:13 | whether or not such a time reversal operation using the same measurement results can be |
---|
0:02:18 | checked or classical and quantum mechanical |
---|
0:02:27 | more classical and quantum measurements are non invasive inventing it or banishing straight |
---|
0:02:33 | at the question is no problem measurement results also time symmetry |
---|
0:02:41 | surprisingly we find but non invasive measurement results are time symmetric classic early but not |
---|
0:02:48 | quantum mechanical this apparent time-reversed has symmetric break increasing use up and fundamental difference between |
---|
0:02:55 | classical and quantum account |
---|