Correlations at PT-Symmetric Quantum Critical Point

Correlations at PT-Symmetric Quantum Critical Point

We consider a PT-symmetric Fermi gas with an exceptional point, representing the critical point between PT-symmetric and symmetry broken phases. The low energy spectrum remains linear in momentum and is identical to that of a Hermitian Fermi gas. The fermionic Green's function decays in a power...

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Bibliographic Details
Main Authors: Dóra, B. (Author), Moca, C.P (Author), Sticlet, D. (Author)
Format: Article
Language:English
Published: American Physical Society 2022
Subjects:
article
Electron gas
entropy
Exceptional points
excitation
Fermi gas
Fermions
Function decays
Greens function
Ground state
Hermitians
Low-energy spectrum
Power-law fashions
Pt symmetries
Quantum entanglement
Quantum-critical point
Symmetrics
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