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The importance of f...
The importance of few-nucleon forces in chiral effective field theory
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- Yang, Chieh-Jen, 1977 (författare)
- Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering,Chalmers tekniska högskola,Chalmers University of Technology
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- Ekström, Andreas, 1980 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Forssén, Christian, 1974 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Hagen, G. (författare)
- University of Tennessee,Oak Ridge National Laboratory
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Rupak, G. (författare)
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- Kolck, U. van (författare)
- University of Arizona,Université Paris-Saclay,University Paris-Saclay
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(creator_code:org_t)
- 2023
- 2023
- Engelska.
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Ingår i: European Physical Journal A. - 1434-601X .- 1434-6001. ; 59:10
- Relaterad länk:
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https://doi.org/10.1...
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https://research.cha...
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Abstract
Ämnesord
Stäng
- We study the importance of few-nucleon forces in chiral effective field theory for describing many-nucleon systems. A combinatorial argument suggests that three-nucleon forces-which are conventionally regarded as next-to-next-to-leading order-should accompany the two-nucleon force already at leading order (LO) starting with mass number A≃ 10–20. We find that this promotion enables the first realistic description of the 16 O ground state based on a renormalization-group-invariant LO interaction. We also performed coupled-cluster calculations of the equation of state for symmetric nuclear matter and our results indicate that LO four-nucleon forces could play a crucial role for describing heavy-mass nuclei. The enhancement mechanism we found is very general and could be important also in other many-body problems.
Ämnesord
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
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