Emergent de Sitter Space and Non-Unitary Tensor Networks from Non-Hermitian Quantum Criticality
The work connects emergent de Sitter spacetime to discrete tensor networks by applying a non-unitary continuous multi-scale entanglement renormalization ansatz (cMERA) to a critical non-Hermitian fermion chain. This establishes a bottom-up framework where boundary quantum data generates an emergent Lorentzian geometry, offering a microscopic path toward understanding de Sitter space.