Momentum-space deformation of quadratic fermionic Hamiltonians is presented as a design principle for creating exceptional points and for purifying mixed states under non-Hermitian evolution.
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Constructing Non-Hermitian Theories with Tunable Exceptional Points and Controlled State Purification
Momentum-space deformation of quadratic fermionic Hamiltonians is presented as a design principle for creating exceptional points and for purifying mixed states under non-Hermitian evolution.