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arXiv 0712.0117nucl-th
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致密星中的色超导夸克物质

Color superconducting quark matter in compact stars

D. B. Blaschke, T. Klahn, F. Sandin

摘要:

最近的迹象表明,高中子星质量(M \sim 2 M_sun)和大半径(R > 12 km)可以排除软状态方程,并引发了一场辩论,是否也可以排除夸克物质在致密星中的存在。我们表明,夸克物质的现代量子场论方法,包括色超导性和矢量平均场,可以对满足新的强约束的混合星进行微观描述。对于这些对象的颜色超导性原来是一个成功的描述的冷却现象,根据最近开发的测试的一个重要组成部分。我们讨论了中微子解俘获跃迁中的能量释放,作为混合星伪装成中子星问题的一个新方面。在未来几代的低温/高密度核-核碰撞实验中,如低能RHIC和CBM @ FAIR,夸克物质的搜索可能会面临同样的问题,即退禁闭跃迁的几乎交叉行为。因此,诊断工具应来自色超导效应。

英文摘要:

Recent indications for high neutron star masses (M \sim 2 M_sun) and large radii (R > 12 km) could rule out soft equations of state and have provoked a debate whether the occurence of quark matter in compact stars can be excluded as well. We show that modern quantum field theoretical approaches to quark matter including color superconductivity and a vector meanfield allow a microscopic description of hybrid stars which fulfill the new, strong constraints. For these objects color superconductivity turns out to be an essential ingredient for a successful description of the cooling phenomenology in accordance with recently developed tests. We discuss the energy release in the neutrino untrapping transition as a new aspect of the problem that hybrid stars masquerade themselves as neutron stars. Quark matter searches in future generations of low-temperature/high-density nucleus-nucleus collision experiments such as low-energy RHIC and CBM @ FAIR might face the same problem of an almost crossover behavior of the deconfinement transition. Therefore, diagnostic tools shall be derived from effects of color superconductivity.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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