“…Our interest in the particular case given by Equation (38) lies in the fact that it is possible to demonstrate that Equation (38) represents a positive definite quadratic form [32]. Accordingly, the quantum correlation matrix ( ) K t (whose elements ( ) ij K t are defined through Equation (39)) is a positive definite matrix and it can be associated to an inner product (see [31] for more details).…”
Section: General Dynamic Invariants: the Second Order Centered Invariantmentioning
“…Our interest in the particular case given by Equation (38) lies in the fact that it is possible to demonstrate that Equation (38) represents a positive definite quadratic form [32]. Accordingly, the quantum correlation matrix ( ) K t (whose elements ( ) ij K t are defined through Equation (39)) is a positive definite matrix and it can be associated to an inner product (see [31] for more details).…”
Section: General Dynamic Invariants: the Second Order Centered Invariantmentioning
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