Improving the Renormalization Group approach to the quantum-mechanical double well potential
arXiv:quant-ph/0108019 · doi:10.1016/S0375-9601(01)00642-9
Abstract
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.
10 pages, 2 EPS figures
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Cited by in corpus (43)
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