A rigorous framework for infinite-mode Gaussian state expectations is developed, but the headline covariance claim (S - iJ ≥ 0, read as S ≥ I) is disproved by squeezed vacuum states.
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On the analytical approach to infinite-mode Boson-Gaussian states
A rigorous framework for infinite-mode Gaussian state expectations is developed, but the headline covariance claim (S - iJ ≥ 0, read as S ≥ I) is disproved by squeezed vacuum states.