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Wormhole geometries supported by quark matter at ultra-high densities

机译:夸克物质在超高密度下支撑的虫洞几何形状

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摘要

A fundamental ingredient in wormhole physics is the presence of exotic matter, which involves the violation of the null energy condition (NEC). In this context, we investigate the possibility that wormholes could be supported by quark matter at extreme densities. Theoretical and experimental investigations of the structure of baryons show that strange quark matter, consisting of the u, d and s quarks, is the most energetically favorable state of baryonic matter. Moreover, at ultra-high densities, quark matter may exist in a variety of superconducting states, namely, the Color-Flavor-Locked (CFL) phase. Motivated by these theoretical models, we explore the conditions under which wormhole geometries may be supported by the equations of state (EOS) considered in the theoretical investigations of quark-gluon interactions. For the description of the normal quark matter, we adopt the Massachusetts Institute of Technology (MIT) bag model EOS, while the color superconducting quark phases are described by a first-order approximation of the free energy. By assuming specific forms for the bag and gap functions, several wormhole models are obtained for both normal and superconducting quark matter. The effects of the presence of an electrical charge are also taken into account.
机译:虫洞物理学的基本要素是外来物质的存在,这涉及对零能条件(NEC)的违反。在这种情况下,我们研究了以极高密度的夸克物质支持虫洞的可能性。对重子结构的理论和实验研究表明,由u,d和s夸克组成的奇夸克物质是重子物质最有利的状态。而且,在超高密度下,夸克物质可能以多种超导状态存在,即色香味锁定(CFL)相。根据这些理论模型,我们探讨了在夸克-胶子相互作用的理论研究中考虑的状态方程(EOS)可以支持虫孔几何结构的条件。对于正常夸克物质的描述,我们采用麻省理工学院(MIT)的布袋模型EOS,而彩色超导夸克相则通过自由能的一阶近似来描述。通过假定布袋和间隙函数的特定形式,可以得到正常和超导夸克物质的几种虫孔模型。还考虑了电荷存在的影响。

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