This paper reports the release of PATHSUM, a new software suite of state-of-the-art path
integral methods for studying the dynamics of single or extended systems coupled to …

An open quantum system refers to a system that is further coupled to a bath system
consisting of surrounding radiation fields, atoms, molecules, or proteins. The bath system is …

Accurate characterization of correlated electronic states, as well as their evolution under
external fields or in dissipative environment, is essentially important for understanding the …

The hierarchical equations of motion (HEOM), derived from the exact Feynman-Vernon path
integral, is one of the most powerful numerical methods to simulate the dynamics of open …

In this Communication, we propose the time-domain Prony fitting decomposition (t-PFD) as
an accurate and efficient exponential series method, applicable to arbitrary bath correlation …

We present numerically exact quantum dynamics simulations using the hierarchical
equation of motion approach to investigate the resonance enhancement of chemical …

For a system strongly coupled to a heat bath, the quantum coherence of the system and the
heat bath plays an important role in the system dynamics. This is particularly true in the case …

We develop new methods to efficiently propagate the hierarchical equations of motion
(HEOM) by using the Tucker and hierarchical Tucker (HT) tensors to represent the reduced …

Numerous linear and non-linear spectroscopic techniques have been developed to
elucidate structural and functional information of complex systems ranging from natural …

We consider a quantum system strongly coupled to multiple heat baths at different
temperatures. Quantum heat transport phenomena in this system are investigated using two …