What question did this study set out to answer?

The aim is to develop an efficient method for computing charged excitation energies in molecular systems using a new Green’s function embedding technique.

June 28, 2026Journal of Chemical Theory and Computation

Low-Scaling Many-Body Green’s Function Calculations for Molecular Systems via Interacting-Bath Dynamical Embedding Theory

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Authors

CVChristian VenturellaYale University JLJiachen LiDuke University TZTianyu ZhuUniversity of Science and Technology of China

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Implication

Randomized trial shows reduced errors in ionization potentials and electron affinities in molecular systems, indicating efficiency of embedding theory.

Key Points

The aim is to develop an efficient method for computing charged excitation energies in molecular systems using a new Green’s function embedding technique.
Extended the interacting-bath dynamical embedding theory (ibDET) for molecular systems.
Constructed bath representations from atom-centered impurities to capture frequency-dependent entanglement.
Utilized GW and EOM-CCSD levels for computing the self-energy of the full system.
ibDET demonstrated accurate spectral properties with errors in ionization potentials and electron affinities around 0.1 eV or smaller.
The method effectively reduces computational costs while capturing important properties of various molecular systems.
Each embedding problem involved only a small fraction of the total orbital space, enhancing scalability.

Cite This Study

Venturella et al. (2026) studied this question.

synapsesocial.com/papers/6a40b92b61bb0a67205c583e https://doi.org/10.1021/acs.jctc.6c00663

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Implication

Randomized trial shows reduced errors in ionization potentials and electron affinities in molecular systems, indicating efficiency of embedding theory.

Low-Scaling Many-Body Green’s Function Calculations for Molecular Systems via Interacting-Bath Dynamical Embedding Theory

Discussion

Member takes

Implication

Key Points

Cite This Study

Low-Scaling Many-Body Green’s Function Calculations for Molecular Systems via Interacting-Bath Dynamical Embedding Theory

Discussion

Member takes

Implication

Key Points

Cite This Study

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