Hyperon-Nucleon Interactions from Quantum Chromodynamics and the Composition of Dense Nuclear Matter
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Beane-2012-Hyperon-Nucleon Interactions from Quantum Chromodynamics.pdf
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Author(s)
Beane, S. R.
Chang, E.
Cohen, S. D.
Detmold, William
Lin, H.-W.
Luu, T. C.
Orginos, Kostas
Savage, M. J.
Walker-Loud, A.
Parreno, A.
Date Issued
October 2012
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Beane, S. et al. “Hyperon-Nucleon Interactions from Quantum Chromodynamics and the Composition of Dense Nuclear Matter.” Physical Review Letters 109.17 (2012). © 2012 American Physical Society
Version
Final published version
Abstract
The low-energy nΣ[superscript -] interactions determine, in part, the role of the strange quark in dense matter, such as that found in astrophysical environments. The scattering phase shifts for this system are obtained from a numerical evaluation of the QCD path integral using the technique of lattice QCD. Our calculations, performed at a pion mass of m[subscript π]~389 MeV in two large lattice volumes and at one lattice spacing, are extrapolated to the physical pion mass using effective field theory. The interactions determined from lattice QCD are consistent with those extracted from hyperon-nucleon experimental data within uncertainties and strengthen model-dependent theoretical arguments that the strange quark is a crucial component of dense nuclear matter.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Massachusetts Institute of Technology. Department of Physics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.109.172001
