Abstract
Upper and lower bounds are established for the survival probability ψ(0) ψ(t) 2 of a quantum state, in terms of the energy moments ψ(0) Hn ψ(0). Introducing a cutoff in the energy generally enables considerable improvement in these bounds and allows the method to be used where the exact energy moments do not exist.
| Original language | English |
|---|---|
| Article number | 062112 |
| Journal | Physical Review A - Atomic, Molecular, and Optical Physics |
| Volume | 75 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 21 Jun 2007 |