Jordan Decomposition of Non-Hermitian Fermionic Quadratic Forms
Abstract
We give a rigorous proof of Conjecture 3.1 by Prosen [Prosen T 2010 J. Stat. Mech. 2010 P07020] on the nilpotent part of the Jordan decomposition of a quadratic fermionic Liouvillian. We also show that the number of the Jordan blocks of each size can be expressed in terms of the coefficients of a polynomial called the q-binomial coefficient and describe the procedure to obtain the Jordan canonical form of the nilpotent part.
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