Hyperon-Nucleon Interactions and the Composition of Dense Matter from Quantum Chromodynamics
Journal Article
·
· Phys.Rev.Lett.
The low-energy n{Sigma}{sup -} 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 determined from a numerical evaluation of the QCD path integral using the technique of Lattice QCD. Our results, performed at a pion mass of m{sub {pi}} ~ 389 MeV in two large lattice volumes, and at one lattice spacing, are extrapolated to the physical pion mass using effective field theory. The calculated interactions indicate that the strange quark plays an important role in dense matter.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- AC05-06OR23177; FG02-04ER41302; SC0001784; FC02-06ER41443; AC02-05CH11231
- OSTI ID:
- 1057571
- Report Number(s):
- JLAB-THY-12-1509; DOE/OR/23177-2040; arXiv:1204.3606; DOE SC Grants AC02- 05CH11231; AC02-06CH11357
- Journal Information:
- Phys.Rev.Lett., Vol. 109, Issue 17
- Country of Publication:
- United States
- Language:
- English
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