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arxiv: quant-ph/0108019 · v1 · submitted 2001-08-05 · 🪐 quant-ph · hep-ph

Improving the Renormalization Group approach to the quantum-mechanical double well potential

D. Zappala' (INFN - Sezione di Catania) This is my paper
classification 🪐 quant-ph hep-ph
keywords doublegroupobtainedquantum-mechanicalrenormalizationwellagreementapproach
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The gap between ground and first excited state of the quantum-mechanical double well is calculated using the Renormalization Group equations to the second order in the derivative expansion, obtained within a class of proper time regulators. Agreement with the exact results is obtained both in the strong and weak coupling regime.

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