Symmetry-resolved quasilocal entanglement as a key to Mott and pseudogap physics in plaquette CDMFT

Abstract

In order to identify intrinsic quantum resources in strongly interacting fermionic systems, we introduce a symmetry resolution of the parity-superselected two-site entanglement, as measured by both the fermionic negativity and the relative entropy of entanglement. We discuss how the symmetry resolution can be extended also to the full entanglement in pure and mixed two-site states. We apply our recipe to the Hubbard model, first for a dimer, and then for a plaquette cluster dynamical mean-field theory, an established method tailored to accurately capture short-range correlations. Following the evolution of the model through the interaction- and density-driven Mott transitions at zero temperature, we highlight how the three symmetry-resolved components of the two-site entanglement probe different key aspects of Mott and pseudogap physics.

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BibTeX RIS

BibTeX

@misc{bellomia2026symmetryresolved,
  title = {{Symmetry-resolved quasilocal entanglement as a key to Mott and pseudogap physics in plaquette CDMFT}},
  author = {Gabriele Bellomia and Carlos Mejuto-Zaera and Massimo Capone and Adriano Amaricci},
  howpublished = {HAL},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.34470},
  eprint = {2610.34470},
  archivePrefix = {arXiv},
  url = {https://hal.science/hal-05840361v1},
  note = {CC BY 4.0},
}

RIS

TY  - UNPB
TI  - Symmetry-resolved quasilocal entanglement as a key to Mott and pseudogap physics in plaquette CDMFT
AU  - Gabriele Bellomia
AU  - Carlos Mejuto-Zaera
AU  - Massimo Capone
AU  - Adriano Amaricci
PY  - 2026
DA  - 2026/10/25
PB  - HAL
DO  - 10.48550/arxiv.2610.34470
UR  - https://hal.science/hal-05840361v1
AB  - In order to identify intrinsic quantum resources in strongly interacting fermionic systems, we introduce a symmetry resolution of the parity-superselected two-site entanglement, as measured by both the fermionic negativity and the relative entropy of entanglement. We discuss how the symmetry resolution can be extended also to the full entanglement in pure and mixed two-site states. We apply our recipe to the Hubbard model, first for a dimer, and then for a plaquette cluster dynamical mean-field theory, an established method tailored to accurately capture short-range correlations. Following the evolution of the model through the interaction- and density-driven Mott transitions at zero temperature, we highlight how the three symmetry-resolved components of the two-site entanglement probe different key aspects of Mott and pseudogap physics.
ER  -

Abstract

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