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The Resolvent of the Nelson Hamiltonian Improves Positivity
Mathematical Physics, Analysis and Geometry ( IF 1 ) Pub Date : 2021-02-01 , DOI: 10.1007/s11040-021-09374-6
Jonas Lampart

We give a new proof that the resolvent of the renormalised Nelson Hamiltonian at fixed total momentum P improves positivity in the (momentum) Fock-representation, for every P. The argument is based on an explicit representation of the renormalised operator and its domain using interior boundary conditions, which allows us to avoid the intermediate steps of regularisation and renormalisation used in other proofs of this result.



中文翻译:

尼尔森哈密顿量的解决方案提高了积极性

我们给出了一个新的证明,在总动量P固定的情况下,经过重新规格化的Nelson Hamilton的分解对于每个P都会提高(动量)Fock表示中的正性。该参数基于使用内部边界条件的重归一化算子及其域的显式表示,这使我们能够避免在此结果的其他证明中使用正则化和重归一化的中间步骤。

更新日期:2021-02-01
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