Gravastar model in Randall?Sundrum braneworld

Autor(es)

Arbanil, V, Jose D. ; Moraes, Pedro H. R. S. ^{[1, 2]} ; Malheiro, Manuel ^[1]

Afiliação do(s) autor(es)

^[1] Ctr Tecn Aeroesp, Inst Tecnol Aeronaut, Dept Fis, BR-12228900 Sao Jose Dos Campos, SP - Brazil

^[2] Univ Napoli Federico II, UNINA, Dipartamento Fis, I-80126 Naples - Italy

• Tipo de documento: Artigo Científico
• Fonte: Classical and Quantum Gravity; v. 36, n. 23 DEC 5 2019.
• Citações Web of Science: 0

Resumo

In this work we derive a gravastar model in Randall?Sundrum II braneworld scenario. Gravastars (or gravitationally vacuum stars) were proposed by Mazur and Mottola as systems of gravitational collapse alternative to black holes. The external region of the gravastar is described by a Schwarzschild space-time, while its internal region is filled by dark energy. In between there is a thin shell surface with ultrarelativistic matter (sometimes referred to as stiff matter). We obtain solutions for some physical quantities of the braneworld gravastars. Those are compared to original Mazur?Mottola results as well as with some gravastar solutions in alternative gravity theories. The consequences of the braneworld setup in gravastar physics is deeply discussed. (AU)

• Processo FAPESP: 18/20689-7 - Estrelas de Gauss-Bonnet
• Beneficiário: Pedro Henrique Ribeiro da Silva Moraes
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado
• Processo FAPESP: 13/26258-4 - Matéria superdensa no universo
• Beneficiário: Manuel Máximo Bastos Malheiro de Oliveira
• Modalidade de apoio: Auxílio à Pesquisa - Temático