What question did this study set out to answer?

This research aims to evaluate and benchmark various many-body approximations using the Hatsugai-Kohmoto model.

March 13, 2026Journal of Physics Condensed Matter

Benchmarking non-perturbative many-body approaches in the exactly solvable Hatsugai-Kohmoto model

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Authors

CLCong LiZhejiang A & F University ZLZ. LiPeking University RCRun-Yu ChenWestlake University

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Implication

Benchmarking evaluates many-body methods' performance in simulations of strongly correlated electron systems, indicating the Hatsugai-Kohmoto model's utility.

Key Points

This research aims to evaluate and benchmark various many-body approximations using the Hatsugai-Kohmoto model.
Utilized the exactly solvable Hatsugai-Kohmoto model as a testing platform.
Compared Green's functions, spectral properties, and response functions with exact solutions.
Evaluated three many-body approximations: $GW$, $HGW$, and $SGW$.
The $GW$ approximation revealed a new solution branch that accurately reproduces the gap structure.
$HGW$ effectively described charge response in the model.
$SGW$ showed good performance for spin correlations.

Cite This Study

Li et al. (2026) studied this question.

synapsesocial.com/papers/69b3ac8102a1e69014cce4da https://doi.org/10.1088/1361-648x/ae5010

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Implication

Benchmarking evaluates many-body methods' performance in simulations of strongly correlated electron systems, indicating the Hatsugai-Kohmoto model's utility.

Benchmarking non-perturbative many-body approaches in the exactly solvable Hatsugai-Kohmoto model

Discussion

Member takes

Implication

Key Points

Cite This Study

Benchmarking non-perturbative many-body approaches in the exactly solvable Hatsugai-Kohmoto model

Discussion

Member takes

Implication

Key Points

Cite This Study

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