Open quantum systems (OQSs) cannot always be described with the Markov approximation,
which requires a large separation of system and environment time scales. An overview is …

The quantum mechanical dynamics of a particle coupled to a heat bath is treated by
functional integral methods and a generalization of the Feynman-Vernon influence …

Controlling and measuring the temperature in different devices and platforms that operate in
the quantum regime is, without any doubt, essential for any potential application. In this …

We consider Ullersma's model of a damped harmonic oscillator interacting with a heat bath.
We show that for large damping the oscillator does not undergo Brownian motion at any …

It is shown that for the scalar analog of electrodynamics in one dimension, the quasinormal
modes of a leaky cavity form a complete set inside the cavity, provided the cavity is defined …

Many important processes in science involve the escape of a particle over a barrier. In this
review, we report, extend, and interpret various theories of noise-activated escape. We …

Over the past one hundred years, Brownian motion theory has contributed substantially to
our understanding of various microscopic phenomena. Originally proposed as a …

With this work we elaborate on the physics of quantum noise in thermal equilibrium and in
stationary nonequilibrium. Starting out from the celebrated quantum fluctuation-dissipation …

Using the parametrically driven harmonic oscillator as a working example, we study two
different Markovian approaches to the quantum dynamics of a periodically driven system …

We investigate the entanglement properties of the joint state of a distinguished quantum
system and its environment in the quantum Brownian motion model. This model is a frequent …