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arXiv · hep-th/0003287

Field Redefinition Invariance in Quantum Field Theory

Karyn M. Apfeldorf·Horacio E. Camblong·Carlos R. Ordonez
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Abstract

The issue of field redefinition invariance of path integrals in quantum field theory is reexamined. A ``paradox'' is presented involving the reduction to an effective quantum-mechanical theory of a $(d+1)$-dimensional free scalar field in a Minkowskian spacetime with compactified spatial coordinates. The implementation of field redefinitions both before and after the reduction suggests that operator-ordering issues in quantum field theory should not be ignored.

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Karyn M. Apfeldorf, Horacio E. Camblong, Carlos R. Ordonez. 2000-09-11. Field Redefinition Invariance in Quantum Field Theory. https://doi.org/10.1142/s021773230100319x

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