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Topology change and nuclear symmetry energy in compact-star matter

机译:紧凑明星物质的拓扑变化和核对称能量

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We show that the cusplike structure in the nuclear symmetry energy, a consequence of topology change, visible in the skyrmion lattice description of dense matter, is extremely robust. It is present in the Skyrme model-with the pion field only-and is left unscathed by massive degrees of freedom such as the vector mesons rho and omega and also the scalar meson introduced as a dilaton. It leads to the emergence of parity-doubling at the skyrmion-half-skyrmion transition and impacts on the nuclear symmetry energy "wilderness" landscape, weeding out roughly half of the wilderness. It is shown that a pseudoconformal sound velocity arises at a precocious density at which the cusp is formed. It is suggested that the topology change, being robust, could impact on the tidal deformability observed in gravity waves
机译:我们表明,在核对称能量中,拓扑变化的后果,在Skyrmion格子描述中可见的后果,是非常强大的。 它存在于Skyrme模型中 - 仅介绍型磁场 - 并且毫不作用地避免了大规模的自由度,例如矢量介子Rho和ω,并且还被剥落的标量梅森。 它导致斯基序半斯法尔蒙思阶段的平等翻倍的出现和对核对称能源“荒野”景观的影响,大约一半的荒野。 结果表明,伪多功能声速以尖端的预先形成,形成尖端。 建议拓扑变化是强壮的,可能会影响在重力波中观察到的潮汐变形性

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