Quark Matter May Not Be Strange.

@article{Holdom2018QuarkMM,
  title={Quark Matter May Not Be Strange.},
  author={Bob Holdom and Jing Ren and Chen Zhang},
  journal={Physical review letters},
  year={2018},
  volume={120 22},
  pages={
          222001
        }
}
If quark matter is energetically favored over nuclear matter at zero temperature and pressure, then it has long been expected to take the form of strange quark matter (SQM), with comparable amounts of u, d, and s quarks. The possibility of quark matter with only u and d quarks (udQM) is usually dismissed because of the observed stability of ordinary nuclei. However, we find that udQM generally has lower bulk energy per baryon than normal nuclei and SQM. This emerges in a phenomenological model… 

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References

SHOWING 1-10 OF 71 REFERENCES

Growing drops of strange matter

Strange matter comprises roughly equal numbers of up (u), down (d) and strange (s) quarks, in contrast to nuclear matter, for which s quarks are absent. The theoretical possibility1–7 that S-drops

Radioactivity in strange quark matter.

  • BergerJaffé
  • Physics
    Physical review. C, Nuclear physics
  • 1987
TLDR
The regions of baryon number, charge, and hypercharge in which various decays are allowed are illustrated graphically, and flow lines and accumulation lines for decaying strangelets are obtained.

Strange quark matter in the presence of explicit symmetry breaking interactions

It is shown that a first order transition associated with a jump in the strange quark mass appears in a generalized 3 flavour Nambu--Jona-Lasinio (NJL) treatment of quark matter. The generalization

Quark matter nucleation in neutron stars and astrophysical implications

Abstract.A phase of strong interacting matter with deconfined quarks is expected in the core of massive neutron stars. We investigate the quark deconfinement phase transition in cold ( $ T=0$ and hot

Strange quark matter in a chiral SU(3) quark mean field model

We apply the chiral SU(3) quark mean field model to investigate strange quark matter. The stability of strange quark matter with different strangeness fraction is studied. The interaction between

Compact stars in a SU(3) Quark-Meson Model

The recent observations of the massive pulsars PSR J1614-2230 and of PSR J0348+0432 with about two solar masses implies strong constraints on the properties of dense matter in the core of compact

The NJL model and strange-quark matter

The stability of strange-quark matter is studied within the Nambu Jona-Lasinio model with three different parameter sets. The model Lagrangian contains 4-fermion (with and without vector interaction)
...