11 citations · 25 across the 12 of their papers we have counts for
14 papers
Nonuniform Screening Reshapes Collective Excitons in Molecular Aggregates from Stochastic Bethe-Salpeter Theory
Barry Y. Li, Chern Chuang, Tim Duong +3
We build and apply an stochastic Bethe-Salpeter Equation (sBSE) approach to planar cyanine dye aggregate clusters containing up to 2,856 valence electrons. Usi…
Efficient Deterministic-Stochastic Representation of the Coulomb Operator in Real Space
Nafiz Faiaz, Tucker Allen, Dimitri Bazile +2
We present an efficient mixed deterministic-stochastic approach for constructing the Coulomb operator in real space that preserves accuracy across the full spectral range. The domi…
Real-Time Approach to the Dynamical Bethe-Salpeter Equation for Finite Systems
Tucker Allen, Barry Y. Li, Daniel Neuhauser
We present a real-time linear-response approach to solving the dynamical Bethe-Salpeter equation (BSE). The polarization part of the screened interaction is obtained from time-depe…
Stochastic GW with the Orthogonalized Projector Augmented Wave Method
Dimitri Bazile, Minh Nguyen, Yuji Kon +2
We introduce stochastic GW with the orthogonalized projector augmented-wave method (OPAW-sGW). This implementation enables accurate quasiparticle band gaps on significantly coarser…
Environment-Induced Exciton Renormalization in the Photosystem II Reaction Center
Tucker Allen, Barry Y. Li, Nadine C. Bradbury +1
Protein electrostatics tune excitation energies in the Photosystem II reaction center (PSII-RC), yet a fully quantum-mechanical many-body description of how the surrounding protein…
StochasticGW-GPU: rapid quasi-particle energies for molecules beyond 10000 atoms
Phillip S. Thomas, Minh Nguyen, Dimitri Bazile +6
is a code for computing accurate Quasi-Particle (QP) energies of molecules and material systems in the GW approximation. utilizes th…
Mixed Planewave and Localized Orbital Basis for Sparse-Stochastic Hybrid TDDFT
Kyle Chen, Barry Y. Li, Tucker Allen +1
We present a mixed basis-set approach to obtain optical absorption spectra within a generalized Kohn-Sham time-dependent density functional theory framework. All occupied valence m…
Parameterized Attenuated Exchange for Generalized TDHF@ Applications
Barry Y. Li, Tim Duong, Tucker Allen +3
Building upon our previously developed time-dependent Hartree-Fock (TDHF)@ method, based on many-body perturbation theory and specifically the Bethe-Salpeter Equation (BSE), w…
Efficient plane-wave approach to generalized Kohn-Sham density-functional theory of solids with mixed deterministic/stochastic exchange
Tucker Allen, Barry Y. Li, Tim Duong +2
An efficient mixed deterministic/sparse-stochastic plane-wave approach is developed for bandstructure calculations of large supercell periodic generalized-Kohn-Sham density functio…
No more gap-shifting: Stochastic many-body-theory based TDHF for accurate theory of polymethine cyanine dyes
Nadine C. Bradbury, Barry Y. Li, Tucker Allen +2
We introduce an individually fitted screened-exchange interaction for the time-dependent Hartree-Fock (TDHF) method and show that it resolves the missing binding energies in polyme…
GW with hybrid functionals for large molecular systems
Tucker Allen, Minh Nguyen, Daniel Neuhauser
A low-cost approach for stochastically sampling static exchange during TDHF-type propagation is presented. This enables the use of an excellent hybrid DFT starting point for stocha…
Sparse-Stochastic Fragmented Exchange for Large-Scale Hybrid TDDFT Calculations
Mykola Sereda, Tucker Allen, Nadine C. Bradbury +2
We extend our recently developed sparse-stochastic fragmented exchange formalism for ground-state hybrid DFT (ngH-DFT) to calculate absorption spectra within linear-response time-d…
Deterministic/Fragmented-Stochastic Exchange for Large Scale Hybrid DFT Calculations
Nadine C. Bradbury, Tucker Allen, Minh Nguyen +1
We develop an efficient approach to evaluate range-separated exact exchange for grid or plane-wave based representations within the Generalized Kohn-Sham DFT (GKS-DFT) framework. T…
Optimized Attenuated Interaction: Enabling Stochastic Bethe-Salpeter Spectra for Large Systems
Nadine C. Bradbury, Tucker Allen, Minh Nguyen +2
We develop an improved stochastic formalism for the Bethe-Salpeter equation, based on an exact separation of the effective-interaction to two parts, where the l…