Xinguo Ren

collaborators

3 papers

cond-mat.str-el2026

Self-Consistent Random Phase Approximation from Projective Truncation Approximation Formalism

Yue-Hong Wu, Xinguo Ren, Ning-Hua Tong

We derive the self-consistent random phase approximations (sc-RPA) from the projective truncation approximation (PTA) for the equation of motion of two-time Green's function. The o…

cond-mat.mtrl-sci2025

$Ab initio$ correlated calculations without finite basis-set error: Numerically precise all-electron RPA correlation energies for diatomic molecules

Hao Peng, Xinguo Ren

In wavefunction-based $ab-initio$ quantum mechanical calculations, achieving absolute convergence with respect to the one-electron basis set is a long-standing challenge.…

physics.comp-ph2025

Direct minimization on the complex Stiefel manifold in Kohn-Sham density functional theory for finite and extended systems

Kai Luo, Tingguang Wang, Xinguo Ren

Direct minimization method on the complex Stiefel manifold in Kohn-Sham density functional theory is formulated to treat both finite and extended systems in a unified manner. This…

Self-Consistent Random Phase Approximation from Projective Truncation Approximation Formalism

Ab initio correlated calculations without finite basis-set error: Numerically precise all-electron RPA correlation energies for diatomic molecules

Direct minimization on the complex Stiefel manifold in Kohn-Sham density functional theory for finite and extended systems

$Ab initio$ correlated calculations without finite basis-set error: Numerically precise all-electron RPA correlation energies for diatomic molecules