Abstract
It is shown that the existence of a time operator in the Liouville space representation of both classical and quantum evolution provides a mechanism for effective entropy change of physical states. In particular, an initially effectively pure state can evolve under the usual unitary evolution to an effectively mixed state.
| Original language | English |
|---|---|
| Pages (from-to) | 70-75 |
| Number of pages | 6 |
| Journal | Physical Review A |
| Volume | 52 |
| Issue number | 1 |
| DOIs | |
| State | Published - 1995 |