From neutron skins and neutron matter to the neutron star crust

Newton, William; Preston, Rebecca; Balliet, Lauren; Ross, M. P.

doi:10.1016/j.physletb.2022.137481

Cited by 11 publications

(3 citation statements)

References 57 publications

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“…The existence of nuclear pastas in neutron stars is found to be extremely sensitive to quantum effects. Whereas nuclear pastas represent a sizable fraction of the mass of the neutron-star crust at the ETF level in agreement with previous predictions from liquid-drop models [10][11][12], they almost completely vanish when shell and pairing corrections are included on top of the ETF energy (3). Quantum effects may thus play a more important role than previously thought.…”

Section: Discussionsupporting

confidence: 89%

“…Following this culinary terminology, the phase with spherical clusters is sometimes referred to as "polpete" or "gnocchi". Later, calculations showed that nuclear pastas could account for half of the mass of the neutron-star crusts [10], and this has been supported by recent studies [11,12]. However, these conclusions may change depending on how the liquid-drop model is implemented.…”

Section: Introductionmentioning

confidence: 78%

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Is there pasta in neutron stars?

Chamel

Shchechilin

2022

EPJ Web Conf.

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The interior of neutron stars may contain a mantle made of very exotic neutron-proton clusters with unusual shapes such as rods or slabs collectively referred to as “nuclear pastas” coexisting with free nucleons and a charge neutralizing gas of electrons. Adding shell and pairing effects perturbatively and consistently to the fourth-order extended Thomas-Fermi method using the Brussels-Montreal functional BSk24, we find that nuclear pastas are much less abundant than previously thought from liquid-drop models, thus questioning their very existence in neutron stars.

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Section: Discussionsupporting

confidence: 89%

Section: Introductionmentioning

confidence: 78%

Is there pasta in neutron stars?

Chamel

Shchechilin

2022

EPJ Web Conf.

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“…In contrast to efforts devoted to systematic, statistically meaningful inferences of the EOS in the cores of neutron stars, modeling the neutron star crust is still in its infancy: The first calculations of large ensembles of systematically parameterized crust models and their use in statistical analysis have only been carried out recently [272][273][274][275][276]. However, much more nuclear experimental data can be brought to directly bear on crust physics, and we have entered an era where we can access information about the crust with unprecedented fidelity.…”

Section: Statusmentioning

confidence: 99%

Dense Nuclear Matter Equation of State from Heavy-Ion Collisions

Sorensen¹,

Agarwal²,

Brown³

et al. 2023

Preprint

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Neutron skin and its effects in heavy-ion collisions

Ding,

Fang,

2024

NUCL SCI TECH

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Neutron skin is an exotic phenomenon that occurs in unstable nuclei. In this study, the various effects of the neutron skin on nuclear reactions and their relationship with the properties of nuclear structures are reviewed. Based on numerous studies using theoretical models, strong correlations have been found between the neutron skin thickness and the neutron removal cross section, neutron/proton yield ratio, $$\hbox {t}/{^3\hbox {He}}$$ t / 3 He yield ratio, neutron–proton momentum difference, isoscaling parameter, photon production, reaction cross sections for neutron-induced reactions, charge-changing cross-sectional differences of mirror nuclei, astrophysical S-factor, and other quantities in nuclear reactions induced by neutron-rich nuclei. Moreover, the relationships between the neutron skin thickness and certain properties of the nuclear structure, such as $$\alpha$$ α -cluster formation, $$\alpha$$ α decay, nuclear surface, nuclear temperature, and proton radii difference of mirror nuclei, have also been investigated. Furthermore, it has also been shown that the neutron skin plays a crucial role in relativistic heavy-ion collisions. Experimentally, an unstable nucleus with a neutron skin can be generated by radioactive nuclear beam facilities, and the thickness of the neutron skin can be extracted by measuring the sensitive probes, which further helps impose stringent constraints on the equation of state of asymmetric nuclear matter and the properties of neutron stars.

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From neutron skins and neutron matter to the neutron star crust

Cited by 11 publications

References 57 publications

Is there pasta in neutron stars?

Is there pasta in neutron stars?

Dense Nuclear Matter Equation of State from Heavy-Ion Collisions

Neutron skin and its effects in heavy-ion collisions

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