Article,

Functional renormalization group and quantum tunnelling

.
J. Phys., (2006)
DOI: 10.1088/0305-4470/39/3/015

Abstract

Abstract. A functional renormalization group approach is applied to a single quantum particle with emphasis on quantum tunnelling through a barrier. We include both an effective potential and a wavefunction renormalization and compare the effects of soft cut-off, hard cut-off and Schwinger proper time regulators. Numerical procedures and results are studied in detail.

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