The quantum “Zeno” time of the 2P-1S transition of the hydrogen atom is computed and
found to be approximately 3.59× 10− 15s (the lifetime is approximately 1.595× 10− 9s). The …

The deviations from a purely exponential behavior in a decay process are analyzed in
relation to Van Hove's “λ2t” limiting procedure. Our attention is focused on the effects that …

In a fundamental test of quantum mechanics, we have observed 228 000 quantum jumps of
a single trapped and laser cooled Sr+ 88 ion. This represents a statistical increase of two …

Unstable systems decay according to an exponential law. Such a law has been
experimentally verified with very high accuracy on many quantum mechanical systems. Yet …

Van Hove's “λ2t” limiting procedure is analyzed in some interesting quantum field-theoretical
cases, both in nonrelativistic and relativistic models. We look at the deviations from a purely …

The theoretical approach takes in consideration the cooperative phenomena which appear
between three particle in two-photon resonance in the process of single-and two-photon …

The behavior of the system of radiators at short and long time intervals in comparison with
the retardation between them is studied. The entanglement behavior of atomic states in the …

We discuss collision-induced spontaneous decay in a system of cold atoms and caloric
effect manifesting in the heating of the atomic system during spontaneous decay. It is shown …

[ ] [ ] [ ] [ ] } Page 1 EXACT NON-STATIONARY SOLUTION FOR THE DENSITY MATRIX OF
SINGLE TWO-LEVEL ATOM N. Enaki and E. Galeamov Institute of Applied Physics, Academy …

The behavior of the system of radiators at short and long time intervals in comparison with
the retardation between them is studied. The entanglement behavior of atomic states in the …