14 citations · 14 across the 4 of their papers we have counts for
4 papers
Complete Positivity Violation in Higher-order Quantum Adiabatic Elimination
Masaaki Tokieda, Cyril Elouard, Alain Sarlette +1
When a composite Lindblad system consists of weakly coupled sub-systems with fast and slow timescales, the description of slow dynamics can be simplified by discarding fast degrees…
Equivalence of dissipative and dissipationless dynamics of interacting quantum systems with its application to the unitary Fermi gas
Masaaki Tokieda, Shimpei Endo
We analytically study quantum dissipative dynamics described by the Caldirola-Kanai model with inter-particle interactions. We have found that the dissipative quantum dynamics of t…
Time-dependent approaches to open quantum systems
M. Tokieda, K. Hagino
Couplings of a system to other degrees of freedom (that is, environmental degrees of freedom) lead to energy dissipation when the number of environmental degrees of freedom is larg…
A new approach for open quantum systems based on a phonon number representation of a harmonic oscillator bath
M. Tokieda, K. Hagino
To investigate a system coupled to a harmonic oscillator bath, we propose a new approach based on a phonon number representation of the bath. Compared to the method of the hierarch…