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Variational Calculations using Low-Momentum Potentials with Smooth Cutoffs

S. K. Bogner·R. J. Furnstahl
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Abstract

Recent variational calculations of the deuteron and the triton illustrate that simple wave function ansatze become more effective after evolving the nucleon-nucleon potential to lower momentum (``V_lowk''). However, wave function artifacts from the use of sharp cutoffs in relative momentum decrease effectiveness for small cutoffs (< 2 fm^-1) and slow down convergence in harmonic oscillator bases. These sharp cutoff artifacts are eliminated when V_lowk is generated using a sufficiently smooth cutoff regulator.

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S. K. Bogner, R. J. Furnstahl. 2006-02-06. Variational Calculations using Low-Momentum Potentials with Smooth Cutoffs. https://doi.org/10.1016/j.physletb.2006.06.037

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