Emergent Mind
A note on Bianchi-Donà's proof to the variance formula of von Neumann entropy
(1906.10303)
Published Jun 25, 2019
in
cs.IT
,
math-ph
,
math.IT
,
and
math.MP
Abstract
Bianchi and Don`{a} [1] have recently reported a proof to the variance formula of von Neumann entropy, which was conjectured in [2] and firstly proved in [3]. The purpose of this short note is to show that, despite having a different starting point, the subsequent calculations (omitted in [1]) leading to the result are essentially the same as in [3].
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