PT symmetry enriches non-Hermitian critical points with topological nontriviality, robust edge modes, and a quantized imaginary subleading term in entanglement entropy scaling.
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A non-unitary cMERA on a non-Hermitian fermion chain yields emergent de Sitter spacetime whose null horizons are encoded by zero-cost tensor links that reproduce the logarithmic entanglement entropy scaling.
A holographic toy model is constructed for third-order photonic exceptional points in ternary microrings, with numerical spectra, phase rigidity, and connections to the theta-vacuum of QCD via topological structures and a second-order EP in a perturbed model.
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PT symmetry-enriched non-unitary criticality
PT symmetry enriches non-Hermitian critical points with topological nontriviality, robust edge modes, and a quantized imaginary subleading term in entanglement entropy scaling.
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Emergent de Sitter Space and Non-Unitary Tensor Networks from Non-Hermitian Quantum Criticality
A non-unitary cMERA on a non-Hermitian fermion chain yields emergent de Sitter spacetime whose null horizons are encoded by zero-cost tensor links that reproduce the logarithmic entanglement entropy scaling.
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Photonic Exceptional Points in Holography and QCD
A holographic toy model is constructed for third-order photonic exceptional points in ternary microrings, with numerical spectra, phase rigidity, and connections to the theta-vacuum of QCD via topological structures and a second-order EP in a perturbed model.