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Author

Domingos S. P. Salazar

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Preprint Aug 2026

A minimal qutrit counterexample to Conjecture 4.9 of Lesniewski and Ruskai

Lesniewski and Ruskai conjectured that the contraction coefficient of every monotone Riemannian metric under a unital stochastic map equals the Hilbert--Schmidt contraction on the traceless subspace. We disprove the conjecture with an explicit entanglement-breaking qutrit channel induced by a doubly stochastic $3\times...

Domingos S. P. Salazar · 0 citations
Preprint Aug 2026

Benign Projective Landscapes for Measured Quantum Divergences

We study nonconvex optimization of measured quantum $f$-divergences over rank-one projective measurements. For smoothly operator-Fenchel liftable generators and faithful states, every projective local maximum and every second-order stationary point is globally optimal over all POVMs. The criterion is blockwise: a criti...

Domingos S. P. Salazar · 0 citations

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