带电奇异夸克星
Electrically Charged Strange Quark Stars
摘要：
由绝对稳定的奇异夸克物质组成的致密星--称为奇异星--的可能存在是由E。差不多四分之一个世纪前。这类物体最令人惊奇的特征之一是其表面可能存在超强电场，对于普通的奇异物质，其电场强度约为$10^{18}$ V/cm。如果奇异物质形成了彩色超导体，正如对这种物质的预期，电场的强度可能会增加到超过$10^{19}$ V/cm的值。与如此巨大的电场相关的能量密度与奇异物质本身的能量密度处于同一数量级，如本文所示，它们分别在15%和5%的水平上改变了奇异夸克星的质量和半径。这种质量的增加使得质量在$2 M_\odot$左右的大质量致密星更容易被解释为奇异夸克星。
英文摘要：
The possible existence of compact stars made of absolutely stable strange quark matter--referred to as strange stars--was pointed out by E. Witten almost a quarter of a century ago. One of the most amazing features of such objects concerns the possible existence of ultra-strong electric fields on their surfaces, which, for ordinary strange matter, is around $10^{18}$ V/cm. If strange matter forms a color superconductor, as expected for such matter, the strength of the electric field may increase to values that exceed $10^{19}$ V/cm. The energy density associated with such huge electric fields is on the same order of magnitude as the energy density of strange matter itself, which, as shown in this paper, alters the masses and radii of strange quark stars at the 15% and 5% level, respectively. Such mass increases facilitate the interpretation of massive compact stars, with masses of around $2 M_\odot$, as strange quark stars.
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