Two approaches to the use of unbounded operators in Feynman's operational calculus
Publication date: 19 May 2020
Published in: The New York Journal of Mathematics (Search for Journal in Brave)
Full work available at URL: http://nyjm.albany.edu/j/2020/26-20.html
unbounded operatorsoperational calculusstability theorydisentanglingtime-orderingmodified Feynman integralTaylor calculusanalytic families of operators
Hermitian and normal operators (spectral measures, functional calculus, etc.) (47B15) Several-variable operator theory (spectral, Fredholm, etc.) (47A13) Functional calculus for linear operators (47A60) Spectrum, resolvent (47A10) Linear symmetric and selfadjoint operators (unbounded) (47B25) Linear operators on Banach algebras (47B48) Vector-valued measures and integration (46G10) Integral transforms, operational calculus (44A99)
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