scholarly journals Analytic Energy Gradients for Variational Two-Electron Reduced-Density Matrix Methods within the Density Fitting Approximation

2018 ◽  
Vol 15 (1) ◽  
pp. 276-289 ◽  
Author(s):  
J. Wayne Mullinax ◽  
Evgeny Epifanovsky ◽  
Gergely Gidofalvi ◽  
A. Eugene DePrince
Keyword(s):  
Density Matrix ◽  
Reduced Density Matrix ◽  
Matrix Methods ◽  
Density Fitting ◽  
Reduced Density

Density matrix and purity evolution in dissipative two-level systems: II. Relaxation

2021 ◽  
Author(s):  
Sambarta Chatterjee ◽  
Nancy Makri
Keyword(s):  
Density Matrix ◽  
Time Evolution ◽  
Reduced Density Matrix ◽  
Level System ◽  
Two Level Systems ◽  
Reduced Density ◽  
Harmonic Bath

We investigate the time evolution of the reduced density matrix (RDM) and its purity in the dynamics of a two-level system coupled to a dissipative harmonic bath, when the system is initially placed in one of its eigenstates.

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