Strangelet dwarfs

  title={Strangelet dwarfs},
  author={Mark G. Alford and Sophia Han and Sanjay Reddy},
If the surface tension of quark matter is low enough, quark matter is not self bound. At sufficiently low pressure and temperature, it will take the form of a crystal of positively charged strangelets in a neutralizing background of electrons. In this case there will exist, in addition to the usual family of strange stars, a family of low-mass large-radius objects analogous to white dwarfs, which we call “strangelet dwarfs”. Using a generic parametrization of the equation of state of quark… Expand

Figures and Tables from this paper

Stable Up-Down Quark Matter Nuggets, Quark Star Crusts, and a New Family of White Dwarfs
The possible existence of stable up-down quark matter (udQM) was recently proposed, and it was shown that the properties of udQM stars are consistent with various pulsar observations. In this work weExpand
Interface effects of strange quark matter
  • C. Xia
  • Physics
  • 2019
The interface effects play important roles for the properties of strange quark matter (SQM) and the related physical processes. We show several examples on the implications of interface effects forExpand
On the stability of strange dwarf hybrid stars
We investigate the stability of stars with a density discontinuity between a high-density core and a very low density mantle. Previous work on "strange dwarfs" suggested that such a discontinuityExpand
Interface effects of strange quark matter with density dependent quark masses
We study the interface effects in strangelets adopting mean-field approximation (MFA). Based on an equivparticle model, the linear confinement and leading-order perturbative interactions are includedExpand
Searching for Strange Quark Matter Objects Among White Dwarfs
It has long been argued that the ground state of matter may be strange quark matter (SQM), not hadronic matter. A whole sequence of SQM objects, ranging from strange quark stars and strange quarkExpand
Orbital Properties and Gravitational-wave Signatures of Strangelet Crystal Planets
In this paper we consider the possibility that strange quark matter may be manifested in the form of strangelet crystal planets. These planet-like objects are made up of nuggets of strange quarkExpand
Torsional Oscillations in Quark Stars presented
This thesis represents the results of work have done during my PhD studies at L’Aquila University and Gran Sasso National Laboratory (LNGS). We investigated the role played by quark crust inExpand
Surface tension of dense matter at the chiral phase transition
If a first-order phase transition separates nuclear and quark matter at large baryon density, an interface between these two phases has a nonzero surface tension. We calculate this surface tensionExpand
Information Theoretical Methods as Discerning Quantifiers of the Equations of State of Neutron Stars
In this work we use the statistical measures of information entropy, disequilibrium and complexity to discriminate different approaches and parametrizations for different equations of state for quarkExpand
Information theoretical methods as discerning quantifiers of the equations of state of neutron stars
Abstract In this work we use the statistical measures of information entropy, disequilibrium and complexity to discriminate different approaches and parametrizations for different equations of stateExpand


Radioactivity in strange quark matter.
  • Berger, Jaffé
  • Physics, Medicine
  • Physical review. C, Nuclear physics
  • 1987
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. Expand
Thickness of the strangelet-crystal crust of a strange star
It has recently been pointed out that if the surface tension of quark matter is low enough, the surface of a strange star will be a crust consisting of a crystal of charged strangelets in aExpand
Intermediate mass strangelets are positively charged
  • Madsen
  • Physics, Medicine
  • Physical review letters
  • 2000
For a limited range of parameters, stable strange quarks matter may be negatively charged in bulk due to one gluon exchange interactions, but the reduction in strange quark occupation in the surface layer more than compensates this for intermediate mass strangelets, which always have positive quark charge. Expand
Strange star surface: a crust with nuggets.
By investigating the possibility of realizing a heterogeneous crust, comprised of nuggets of strange quark matter embedded in an uniform electron background, it is found that the strange star surface has a much reduced density gradient and negligible electric field. Expand
Evidence against a strange ground state for baryons
Abstract We argue that if strange quark matter were the ground state of baryons at zero pressure and if some observed compact stars (or some cosmic rays) are strange, then the interstellar medium isExpand
Gaps below strange star crusts
The gap caused by a strong electric field between the quark surface and nuclear crust of a strange star is studied in an improved model including gravity and pressure as well as electrostatic forces.Expand
Massive Compact Halo Objects from the relics of the cosmic quark-hadron transition
The existence of compact gravitational lenses, with masses around 0.5 M O ., has been reported in the halo of the Milky Way. The nature of these dark lenses is as yet obscure, particularly becauseExpand
Hadron-quark mixed phase in hyperon stars
We analyze different scenarios for the hadron-quark phase transition occurring in beta-stable matter including hyperons in neutron stars. We use a Brueckner-Hartree-Fock approach including hyperonsExpand
Shell model versus liquid drop model for strangelets.
  • Madsen
  • Physics, Medicine
  • Physical review. D, Particles and fields
  • 1994
An ansatz for the curvature contribution to the density of states for massive quarks in a bag is given and shown to reproduce exact mode-filling calculations, to match nicely with the asymptotic expansion. Expand
Finite size effects and the mixed quark - hadron phase in neutron stars
We demonstrate that the form and location (not the size or spacing) of the energetically preferred geometrical structure of the crystalline quark-hadron mixed phase in a neutron star are veryExpand