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  • Acharya, B., et al. (author)
  • Corrections to nucleon capture cross sections computed in truncated Hilbert spaces
  • 2017
  • In: Physical Review C - Nuclear Physics. - 2469-9985 .- 2469-9993. ; 95:3
  • Journal article (peer-reviewed)abstract
    • Nucleon capture cross sections enter various astrophysical processes. The measurement of proton capture on nuclei at astrophysically relevant lowenergies is a challenge, and theoretical computations in this long-wavelength regime are sensitive to the long-distance asymptotics of thewave functions. Atheoretical foundation for estimating and correcting errors introduced in capture cross sections due to Hilbert space truncation has so far been lacking. We derive extrapolation formulas that relate the infrared regularized capture amplitudes to the infinite basis limit and demonstrate their efficacy for proton-proton fusion. Our results are thus relevant to current calculations of few-body capture reactions such as proton-proton fusion or proton capture on the deuteron, and they also open the way for the use of ab initio many-body wave functions represented in finite Hilbert spaces in precision calculations of nucleon capture on heavier nuclei.
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Type of publication
journal article (1)
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peer-reviewed (1)
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Acharya, B. (1)
Ekström, Andreas, 19 ... (1)
Odell, D. (1)
Papenbrock, T. (1)
Platter, L. (1)
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Chalmers University of Technology (1)
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English (1)
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Natural sciences (1)
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