Speaker
Luis Garay
Description
Good clocks, which are naturally subject to fluctuations,
can be characterized in statistical terms and the
evolution of quantum systems according to these clocks
obey a master equation. This master equation is
diffusive and produces loss of coherence. Moreover, real
clocks can be described in terms of effective interactions
that are non-local in time. Alternatively, they can be
modeled by an effective thermal bath coupled to the
system. This may give interesting hints in the study of
some aspects concerning the evolution of quantum
low-energy fields in a foamlike spacetime, with involved
topology at the Planck scale but with a smooth metric
structure at large length scales, which also introduces
nonlocal interactions that can be modeled by a quantum
bath, and low-energy fields evolve according to a master
equation.
