Complex fixed points of the non-Hermitian Kondo model in a Luttinger liquid

Han, S.; Schultz, Daniel J.; Kim, Yong Baek

doi:10.1103/physrevb.107.235153

Phys. Rev. B

2023

DOI: 10.1103/physrevb.107.235153

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Complex fixed points of the non-Hermitian Kondo model in a Luttinger liquid

S. Han

Daniel J. Schultz

Yong Baek Kim

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2024

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Cited by 7 publications

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Transfer learning from Hermitian to non-Hermitian quantum many-body physics

Sayyad,

Lado

2024

J. Phys.: Condens. Matter

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Identifying phase boundaries of interacting systems is one of the key steps to understanding quantum many-body models. The development of various numerical and analytical methods has allowed exploring the phase diagrams of many Hermitian interacting systems. However, numerical challenges and scarcity of analytical solutions hinder obtaining phase boundaries in non-Hermitian many-body models. Recent machine learning methods have emerged as a potential strategy to learn phase boundaries from various observables without having access to the full many-body wavefunction. Here, we show that a machine learning methodology trained solely on Hermitian correlation functions allows identifying phase boundaries of non-Hermitian interacting models. These results demonstrate that Hermitian machine learning algorithms can be redeployed to non-Hermitian models without requiring further training to reveal non-Hermitian phase diagrams. Our findings establish transfer learning as a versatile strategy to leverage Hermitian physics to machine learning non-Hermitian phenomena.

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Transfer learning from Hermitian to non-Hermitian quantum many-body physics

Sayyad,

Lado

2024

J. Phys.: Condens. Matter

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Theory of non-Hermitian fermionic superfluidity on a honeycomb lattice: Interplay between exceptional manifolds and Van Hove singularity

Takemori,

Yamamoto,

Koga

2024

Phys. Rev. B

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Phase diagram of non-Hermitian BCS superfluids in a dissipative asymmetric Hubbard model

Takemori,

Yamamoto,

Koga

2024

Phys. Rev. B

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Complex fixed points of the non-Hermitian Kondo model in a Luttinger liquid

Cited by 7 publications

References 61 publications

Transfer learning from Hermitian to non-Hermitian quantum many-body physics

Transfer learning from Hermitian to non-Hermitian quantum many-body physics

Theory of non-Hermitian fermionic superfluidity on a honeycomb lattice: Interplay between exceptional manifolds and Van Hove singularity

Phase diagram of non-Hermitian BCS superfluids in a dissipative asymmetric Hubbard model

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