Influence of quark nuggets on primordial nucleosynthesis

Schaeffer, R.; Delbourgo-Salvador, P.; Audouze, J.

doi:10.1038/317407a0

Cited by 24 publications

(11 citation statements)

References 2 publications

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“…Another possibility to obtain a local baryon-to-photon ratio during primordial nucleosynthesis in excess of η h ∼ 10 −4 is from the evaporation of low-entropy nuggets. The effects of strange-quark matter nuggets on primordial nucleosynthesis have been considered (Schaeffer, Delbourgo-Salvador & Audouze 1985;Madsen & Riisager 1985), but the evaporation of nuggets before primordial nucleosynthesis and the possibility of significant heavy element production during primordial nucleosynthesis has not been addressed before.…”

Section: Resultsmentioning

confidence: 99%

Enhanced heavy-element formation in baryon-inhomogeneous big bang models

Jedamzik¹,

Fuller²,

Mathews³

et al. 1994

ApJ

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We show that primordial nucleosynthesis in baryon inhomogeneous big-bang models can lead to significant heavy-element production while still satisfying all of the lightelement abundance constraints including the low lithium abundance observed in population II stars. The parameters which admit this solution arise naturally from the process of neutrino induced inflation of baryon inhomogeneities prior to the epoch of nucleosynthesis. These solutions entail a small fraction of baryons ( < ∼ 2%) in very high density regions with local baryon to photon ratio η h ≃ 10 −4 , while most baryons are at a baryon-tophoton ratio which optimizes the agreement with light-element abundances. This model would imply a unique signature of baryon inhomogeneities in the early universe, evidenced by the existence of primordial material containing heavy-element products of proton and alpha-burning reactions with an abundance of [Z] ∼ −6 to −4.

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Section: Resultsmentioning

confidence: 99%

Enhanced heavy-element formation in baryon-inhomogeneous big bang models

Jedamzik¹,

Fuller²,

Mathews³

et al. 1994

ApJ

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“…Such a possibility would be aesthetically rather pleasing, as it would not require any exotic physics. Nor would the success of the primordial (big bang) nucleosynthesis scenario be materially a †ected (Yang et al 1984 ;Schae †er, Delbourgo-Salvador, & Audouze 1985 ;Rana et al 1990 ;Madsen & Riisager 1985) ; we shall discuss this point in some detail later on.…”

Section: Introductionmentioning

confidence: 99%

Quark Nuggets as Baryonic Dark Matter

Alam¹,

Raha²,

Sinha³

1999

ApJ

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The cosmic Ðrst-order phase transition from quarks to hadrons, occurring a few microseconds after the big bang, would lead to the formation of quark nuggets which would be stable on a cosmological timescale if the associated baryon number was larger than a critical value. We examine the possibility that these surviving quark nuggets may not only be viable candidates for cold dark matter but could even close the universe.

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“…(Ref. [62] found good correspondence with nucleosynthesis for a nugget-dominated, Ω = 1 Universe if A ≈ 10 17 , but as shown in [46], this was due to an erroneous emission rate for nucleons.) The nucleosynthesis calculations leading to A BBN neglected inhomogeneities in the nucleon distribution, and all nuggets were assumed to have the same baryon number.…”

Section: Quark Nuggets and Big Bang Nucleosynthesismentioning

confidence: 94%

Physics and astrophysics of strange quark matter

Madsen

Lecture Notes in Physics

193

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3-flavor quark matter (strange quark matter; SQM) can be stable or metastable for a wide range of strong interaction parameters. If so, SQM can play an important role in cosmology, neutron stars, cosmic ray physics, and relativistic heavy-ion collisions. As an example of the intimate connections between astrophysics and heavy-ion collision physics, this Chapter gives an overview of the physical properties of SQM in bulk and of small-baryon number strangelets; discusses the possible formation, destruction, and implications of lumps of SQM (quark nuggets) in the early Universe; and describes the structure and signature of strange stars, as well as the formation and detection of strangelets in cosmic rays. It is concluded, that astrophysical and laboratory searches are complementary in many respects, and that both should be pursued to test the intriguing possibility of a strange ground state for hadronic matter, and (more generally) to improve our knowledge of the strong interactions.

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Influence of quark nuggets on primordial nucleosynthesis

Cited by 24 publications

References 2 publications

Enhanced heavy-element formation in baryon-inhomogeneous big bang models

Enhanced heavy-element formation in baryon-inhomogeneous big bang models

Quark Nuggets as Baryonic Dark Matter

Physics and astrophysics of strange quark matter

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