Abstract
We derive new bounds on the moments of the negative eigenvalues of a selfadjoint operator B. The moments of order \(0<\gamma \leqslant 1\) are estimated in terms of Schatten-norm bounds on the difference of the semigroups generated by B and a reference operator A which is assumed to be nonnegative and selfadjoint. The estimate in the case γ = 1 is sharp.
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