A generalized quantum geometric tensor for mixed states is defined using covariant derivatives on the purification bundle, with Bures metric as real part and mean gauge curvature as imaginary part.
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Quantum Geometric Tensor for Mixed States Based on the Covariant Derivative
A generalized quantum geometric tensor for mixed states is defined using covariant derivatives on the purification bundle, with Bures metric as real part and mean gauge curvature as imaginary part.