The exact decay rate for emission of massless minimally coupled scalar elds by a non-extremal black hole in 2 + 1 dimensions is obtained. At low energy, the decay rate into scalars with zero angular momentum is correctly reproduced within conformal eld theory. The conformal eld theory has both left-and right-moving sectors and their contribution to the decay rate is associated naturally with le...

A remarkable feature of the Landau–Zener transition is insensitivity survival probability to decay rate, τ−1, excited state. Namely, for a particle which initially (at t→−∞) in ground state remain at t→∞ same insensitive τ−1 due e.g. coupling continuum (Akulin and Schleich, 1992). This was demonstrated case when density states energy-independent. We study opposite limit step-like function energ...

The exact decay rate for emission of massless minimally coupled scalar fields by a non-extremal black hole in 2 + 1 dimensions is obtained. At low energy, the decay rate into scalars with zero angular momentum is correctly reproduced within conformal field theory. The conformal field theory has both leftand rightmoving sectors and their contribution to the decay rate is associated naturally wit...

We theoretically study the trapping time distribution and the efficiency of the excitation energy transport in dendritic systems. Trapping of excitations, created at the periphery of the dendrimer, on a trap located at its core, is used as a probe of the efficiency of the energy transport across the dendrimer. The transport process is treated as incoherent hopping of excitations between nearest...