Kaon condensation in skyrmion matter and compact stars

Adam, Christoph; Martín-Caro, Alberto García; Huidobro, Miguel; Vázquez, R. A.; Wereszczyński, A.

doi:10.48550/arxiv.2212.00385

Cited by 1 publication

(4 citation statements)

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“…Similarly, ∆ a = 0 in the purely barionic phase, and its third component acquires a non-zero value in the condensate phase, ∆ cond = (0, 0, ∆). The explicit expressions for Λ 3 and ∆ in the condensed phase can be found in [49]. One can check that in the non-condensed phase, φ = 0 and the results of the previous section are recovered, namely, Λ 3 = Λ, ∆ = 0.…”

Section: Quantum Corrections To the Effective Potentialmentioning

confidence: 69%

“…Next, in Section 4, we take into account the strangeness degrees of freedom by extending the Skyrme field to a SU(3)-valued matrix field. In particular, we compute the kaon condensation in the semiclassical Skyrme crystal, briefly reviewing the very recent results of [49]. In Section 5, we apply all the previously investigated crystal solutions to the description of neutron stars.…”

Section: Skyrme Mattermentioning

confidence: 99%

“…Below we shall briefly review the crucial steps to determine whether kaon fields may condense inside a Skyrme crystal for a sufficiently high density, and, if so, whether this critical density value is relevant for the description of matter inside compact stars. A more detailed discussion can be found in [49].…”

Section: Kaon Condensate In Skyrmion Crystalsmentioning

confidence: 99%

“…We also show the standard nuclear physics EOS of [75] (BCPM) and a hybrid EoS obtained by joining the BCPM EOS at low pressure with the GC EOS at high pressure. This figure was originally published in [49].…”

Section: Including Kaonsmentioning

confidence: 99%

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Skyrme Crystals, Nuclear Matter and Compact Stars

et al. 2023

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A general review of the crystalline solutions of the generalized Skyrmemodel and their application to the study of cold nuclear matter at finite density and the Equation of State (EOS) of neutron stars is presented. For the relevant range of densities, the ground state of the Skyrmemodel on the three torus is shown to correspond to configurations with different symmetries, with a sequence of phase transitions between such configurations. The effects of nonzero finite isospin asymmetry are taken into account by the canonical quantization of isospin collective coordinates, and some thermodynamical and nuclear observables (such as the symmetry energy) are computed as a function of the density. We also explore the extension of the model to accommodate strange degrees of freedom, and find a first-order transition for the condensation of kaons in the Skyrme crystal background in a thermodynamically consistent, non-perturbative way. Finally, an approximate EOS of dense matter is constructed by fitting the free parameters of the model to some nuclear observables close to saturation density, which are particularly relevant for the description of nuclear matter. The resulting neutron star mass–radius curves already reasonably satisfy current astrophysical constraints.

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Section: Quantum Corrections To the Effective Potentialmentioning

confidence: 69%

Section: Skyrme Mattermentioning

confidence: 99%

Section: Kaon Condensate In Skyrmion Crystalsmentioning

confidence: 99%

Section: Including Kaonsmentioning

confidence: 99%

See 2 more Smart Citations