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Fast and Accurate Excitation Energies from Density Matrix Renormalization Group Calculations Improved by Machine Learning
Pavlo Golub, Libor Veis
An estimation of optoelectronic properties is a crucial necessity and an ongoing challenge in modern functional material science. This involves accurate accessing of ground and exc…
GW and Bethe-Salpeter Theory for Molecular Polaritons, Quasiparticles, and Excitons
Soohaeng Yoo Willow, Gi Beom Sim, Tae Hyeon Park +6
The electron self-energy is central to quasiparticle theory, yet how an optical cavity enters it remains unclear. We address this question for a molecule in a single-mode cavity us…
Stochastic Cluster Expansion for Excited State Energies
Annabelle Canestraight, Russell Miller, Libor Veis +1
Excited-state electronic structure in strongly correlated systems remains challenging due to the exponential scaling of the many-body Hilbert space and the difficulty of constructi…
Strongly entangled Quantum Spin Rings driven by Hückel rule
Manish Kumar, Deng-Yuan Li, Zhangyu Yuan +11
Quantum spin rings represent an intriguing platform for studying unconventional magnetic order and exotic quantum phases, and they are also promising materials for emerging quantum…
Why Projection-Based DMRG-in-DFT Cannot Be Exact, Even with the Exact Exchange-Correlation Functional
Enzo Monino, Daria Drwal, Michał Hapka +2
We establish the theoretical foundations for embedding a correlated wave function in an environment formed by Kohn-Sham orbitals. We show that introducing an approximation which eq…
A Stochastic Cluster Expansion for Electronic Correlation in Large Systems
Annabelle Canestraight, Anthony J. Dominic, Andres Montoya-Castillo +2
Accurate many-body treatments of condensed-phase systems are challenging because correlated solvers such as full configuration interaction (FCI) and the density matrix renormalizat…