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Article Dans Une Revue Frontiers in Physics Année : 2020

The Problem of Renormalization of Chiral Nuclear Forces

Résumé

Ever since quantum field theory was first applied to the derivation of nuclear forces in the mid-20th century, the renormalization of pion exchange with realistic couplings has presented a challenge. The implementation of effective field theories (EFTs) in the 1990s promised a solution to this problem but unexpected obstacles were encountered. The response of the nuclear community has been to focus on "chiral potentials" with regulators chosen to produce a good description of data. Meanwhile, a successful EFT without explicit pion exchange --- Pionless EFT --- has been formulated where renormalization is achieved order by order in a systematic expansion of low-energy nuclear observables. I describe how lessons from Pionless EFT are being applied to the construction of a properly renormalized Chiral EFT.

Dates et versions

hal-03092848 , version 1 (03-01-2021)

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U. van Kolck. The Problem of Renormalization of Chiral Nuclear Forces. Frontiers in Physics, 2020, 8, ⟨10.3389/fphy.2020.00079⟩. ⟨hal-03092848⟩
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