A ug 2 00 1 Improving the Renormalization Group approach to the quantum - mechanical double well potential
نویسنده
چکیده
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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تاریخ انتشار 2001