Singular potentials and limit cycles
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- 10 September 2001
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 64 (4) , 042103
- https://doi.org/10.1103/physreva.64.042103
Abstract
We show that a central singular potential (with is renormalized by a one-parameter square-well counterterm; low-energy observables are made independent of the square-well width by adjusting the square-well strength. We find a closed form expression for the renormalization-group evolution of the square-well counterterm.
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