2001/08/05 by D. Zappala' · 1 citation
Physics and Astronomy · #hep-ph #quant-ph
paper · pdf · doi:10.1016/s0375-9601(01)00642-9
published as Phys.Lett. A290 (2001) 35-40 · 10 pages, 2 EPS figures
arxiv created 2001/08/05 · arxiv updated 2009/11/30
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.