Non-Hermitian Jaynes-Cummings model exhibits exceptional points and quantum phase transitions in invariant subspaces, distinguishable via distinct entanglement entropy profiles.
While, the entropy is completely real in the unbroken region, it takes up complex values as we enter the broken region and shows a periodic nature
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Quantum phase transitions and entanglement entropy in a non-Hermitian Jaynes-Cummings model
Non-Hermitian Jaynes-Cummings model exhibits exceptional points and quantum phase transitions in invariant subspaces, distinguishable via distinct entanglement entropy profiles.