Explicit flavor symmetry breaking and holographic compact stars

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• 作者：Youngman Kim (1)
  Ik Jae Shin (1)
  Chang-Hwan Lee (2) (4)
  Mew-Bing Wan (3)
  
  1. Rare Isotope Science Project ; Institute for Basic Science ; Daejeon ; 305-811 ; Korea
  2. Department of Physics ; Pusan National University ; Busan ; 609-735 ; Korea
  4. Department of Physics and Astronomy ; State University of New York ; Stony Brook ; NY ; 11794 ; USA
  3. Asia-Pacific Center for Theoretical Physics ; Pohang ; 790-784 ; Korea
  
• 关键词：Gauge/gravity duality ; Dense matter ; Strong isospin violation ; Compact stars
• 刊名：Journal of the Korean Physical Society
• 出版年：2015
• 出版时间：February 2015
• 年：2015
• 卷：66
• 期：4
• 页码：578-584
• 全文大小：627 KB
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• 刊物主题：Physics, general; Theoretical, Mathematical and Computational Physics; Particle and Nuclear Physics;
• 出版者：Springer Netherlands
• ISSN：1976-8524

文摘

We study the effects of flavor symmetry breaking on holographic dense matter and compact stars in the D4/D6 model. To this end, two light flavors and one intermediate mass flavor are considered. For two light quarks, we investigate how the strong isospin violation affects the properties of holographic dense matter and compact stars. We observe that quark-antiquark condensates are flavor dependent and show interesting behavior near the transition from dense matter with only one flavor to matter with two flavors. An intermediate mass quark is introduced to investigate the role of the third flavor. The mass-radius relations of holographic compact stars with three flavors show that the mass-radius curve changes drastically at a transition density from which the third flavor begins to appear in the matter.