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

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

2001-08-05

arxiv.org/abs/quant-ph/0108019v1

Phys.Lett. A290 (2001) 35-40

Physics

Quantum Physics

10 pages, 2 EPS figures

Scientific paper

10.1016/S0375-9601(01)00642-9

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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