New regular charged black holes and quasiblack holes

• Grant number: 10/08948-5
• Support Opportunities: Scholarships abroad - Research
• Start date: August 01, 2010
• End date: September 10, 2010
• Field of knowledge: Physical Sciences and Mathematics - Physics - Elementary Particle Physics and Fields
• Principal Investigator: Vilson Tonin Zanchin
• Grantee: Vilson Tonin Zanchin
• Host Investigator: José Pizarro de Sande e Lemos
• Host Institution: Centro de Ciências Naturais e Humanas (CCNH). Universidade Federal do ABC (UFABC). Ministério da Educação (Brasil). Santo André , SP, Brazil
• Institution abroad: Instituto Superior Técnico (IST), Portugal
• Associated research grant: 06/07148-0 - Gravitation and Cosmology: Perturbation, Phenomenology and Exact Results, AP.TEM

Abstract

The first task of the present project is to use the Einstein-Maxwell equations coupled to electrically charged matter to find new regular black hole solutions. These blackholes have a de Sitter interior, a Reissner-Nordström exterior, and an electrically charged shell on the boundary between these two regions. The main physical and geometrical properties of these remarkable charged regular black holes shall also be analyzed in detail. Other solutions of this type with phenomenological charged source should also be found. Regular, asymptotically flat, black holes either with a magnetic charged core or with a de Sitter core are known, but with a de Sitter core together with electric charge, as those we propose to study here, seem to have not been explored. A second task proposed here is the study of stability of the quasiblack hole solutions which has recently been found. (AU)