09 بهمن 1401
سعيده صادقيان

سعیده صادقیان

مرتبه علمی: استادیار
نشانی: دانشگاه مازندران
تحصیلات: دکترای تخصصی / فیزیک-ذرات بنیادی
تلفن: 011-35302442
دانشکده: دانشکده علوم پایه

مشخصات پژوهش

عنوان Three theorems on near horizon extremal vanishing horizon geometries
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
Near horizon geometry, Extremal black holes, anti-de Sitter, strong energy condition
مجله Physics Letters B
شناسه DOI 10.1016/j.physletb.2015.12.057
پژوهشگران سعیده صادقیان (نفر اول) ، محمد مهدی شیخ جباری (نفر دوم) ، محمد حسن وحیدی نیا (نفر سوم) ، حسین یاورتنو (نفر چهارم)

چکیده

EVH black holes are Extremal black holes with Vanishing Horizon area, where vanishing of horizon area is a result of having a vanishing one-cycle on the horizon. We prove three theorems regarding near horizon geometry of EVH black hole solutions to generic Einstein gravity theories in diverse dimensions. These generic gravity theories are Einstein–Maxwell-dilaton-Λ theories, and gauged or ungauged supergravity theories with U(1) Maxwell fields. Our three theorems are: (1) The near horizon geometry of any EVH black hole has a three dimensional maximally symmetric subspace. (2) If the energy momentum tensor of the theory satisfies strong energy condition either this 3d part is an AdS 3 , or the solution is a direct product of a locally 3d flat space and a d−3 dimensional part. (3) These results extend to the near horizon geometry of near-EVH black holes, for which the AdS 3 part is replaced with BTZ geometry.