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20102014
most citedTime-ordered exponential on the complex plane and Gell-Mann -- Low formula as a mathematical theorem

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hep-lat2012

A Note on Reflection Positivity and the Umezawa-Kamefuchi-Kallen-Lehmann Representation of Two Point Correlation Functions

Kouta Usui

It will be proved that a model of lattice field theories which satisfies (A1) Hermiticity, (A2) translational invariance, (A3) reflection positivity, and (A4) polynomial boundednes…