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arXiv 1203.0883hep-th
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全息磁星

Holographic Magnetic Star

Piyabut Burikham, Tossaporn Chullaphan

摘要:

研究了均匀磁场下的暖费米AdS星。我们利用Dirac方程得到了相对论性朗道能级,并利用TOV方程研究了恒星的物理轮廓。体积属性,如声速,绝热指数,和熵密度内的恒星进行了计算分析和数值。体温度增加的质量极限的AdS星,但外部磁场有相反的效果。结果部分解释的规范物质的预热化过程中的质量注入后,在AdS边界。熵密度被发现表现出类似的温度依赖性的磁黑膜在AdS在一定的限制,无论不同的性质的体积和霍金温度。总熵的AdS星也被发现是一个递增的函数的体温度和减少的函数的磁场,类似的行为的质量限制。由于总熵和质量极限都是全局量,它们可以为双规范物质在热化之前和热化过程中的熵和能量提供一些线索。

英文摘要:

A warm fermionic AdS star under a homogeneous magnetic field is explored. We obtain the relativistic Landau levels by using Dirac equation and use the Tolman-Oppenheimer-Volkoff (TOV) equation to study the physical profiles of the star. Bulk properties such as sound speed, adiabatic index, and entropy density within the star are calculated analytically and numerically. Bulk temperature increases the mass limit of the AdS star but external magnetic field has the opposite effect. The results are partially interpreted in terms of the pre-thermalization process of the gauge matter at the AdS boundary after the mass injection. The entropy density is found to demonstrate similar temperature dependence as the magnetic black brane in the AdS in certain limits regardless of the different nature of the bulk and Hawking temperatures. Total entropy of the AdS star is also found to be an increasing function of the bulk temperature and a decreasing function of the magnetic field, similar behaviour to the mass limit. Since both total entropy and mass limit are global quantities, they could provide some hints to the value of entropy and energy of the dual gauge matter before and during the thermalization.

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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