# Open quantum dynamics theory for a complex subenvironment system with a quantum thermostat: Application to a spin heat bath.

@article{Nakamura2021OpenQD, title={Open quantum dynamics theory for a complex subenvironment system with a quantum thermostat: Application to a spin heat bath.}, author={Kiyoto Nakamura and Yoshitaka Tanimura}, journal={The Journal of chemical physics}, year={2021}, volume={155 24}, pages={ 244109 } }

Complex environments, such as molecular matrices and biological material, play a fundamental role in many important dynamic processes in condensed phases. Because it is extremely difficult to conduct full quantum dynamics simulations on such environments due to their many degrees of freedom, here, we treat in detail the environment only around the main system of interest (the subenvironment), while the other degrees of freedom needed to maintain the equilibrium temperature are described by a…

## One Citation

### Imaginary-time hierarchical equations of motion for thermodynamic variables.

- PhysicsThe Journal of chemical physics
- 2022

The partition function (PF) plays a key role in the calculation of quantum thermodynamic properties of a system that interacts with a heat bath. The imaginary-time hierarchical equations of motion…

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