Weak Gravity Conjecture and extremal black holes

作     者：William Cottrell Gary Shiu Pablo Soler 

作者机构：Department of PhysicsUniversity of WisconsinMadison WI53706USA Institut fur Theoretische PhysikUniversitat HeidelbergPhilosophenweg19Heidelberg D-69120Germany 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2019年第62卷第11期

页      面：69-86页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：supported by the Department of Energy (DOE) (Grant No. DE-FG-02-95ER40896)the Kellett Award of the University of Wisconsin  and the Hong Kong Research Grants Council (HKRGC) (Grant Nos. HUKST4/CRF/13G  604231  and 16304414)Support for William Cottrell’s research was also provided by the Graduate School and the Office of the Vice Chancellor for Research and Graduate Education at the University of Wisconsin-Madison with funding from the Wisconsin Alumni Research Foundationsupport from the DFG Transregional Collaborative Research Centre TRR 33 “The Dark Universe” 

主　　题：black holes string theory entropy 

摘      要：Motivated by the desire to improve our understanding of the Weak Gravity Conjecture, we compute the one-loop correction of charged particles to the geometry and entropy of extremal black holes in 4D. We use the entropy function formalism to extend previous analysis that dealt with neutral particles, and obtain the corrections to the horizon entropy for different regimes of black hole masses. These corrections are small in general. They are furthermore reduced when supersymmetry is present, and disappear in N = 4 supergravity. We provide some speculative arguments that in a theory with only sub-extremal particles, classical Reissner-Nordstrom black holes actually possess an infinite microcanonical entropy, though only a finite amount is visible to an external observer, as shown by the horizon entropy computation.