Interest in problems of statistical inference connected to measurements of quantum systems
has recently increased substantially, in step with dramatic new developments in …

For the ground state energy of the spin-boson (SB) model, we give a new upper bound in
the case with infrared singularity condition (ie without infrared cutoff), and a new lower …

The problem of extending ideas and results on the dynamics of infinite classical lattice
systems to the quantum domain naturally arises in different branches of physics …

An exact density matrix of a phase-damped Jaynes-Cummings model (JCM) with entangled
Bell-like initial states formed from a model two-state atom and sets of adjacent photon …

The pseudomode approach is discussed, with emphasis on the Gorini-Kossakowski-
Sudarshan-Lindblad form of this approach. The connection of the pseudomode approach …

We consider the problem of excitation energy transfer in quantum many-particle systems
with a dipole interaction. The considered exciton transfer mechanism is based on quantum …

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 …

A new derivation of the quantum stochastic differential equation for the evolution operator in
the low density limit is presented. We use the distribution approach and derive a new …

We propose a model based on a generalized effective Hamiltonian for studying the effect of
noise in quantum computations. The system-environment interactions are taken into account …

A notion of quantum multipole (in particular, dipole) noise is considered. Quantum dipole
noise is an analogue of quantum white noise but it acts in a Fock space with indefinite …