Počet záznamů: 1

On higher dimensional Einstein spacetimes with a warped extra dimension

  1. 1.
    0359288 - MU-W 2012 RIV GB eng J - Článek v odborném periodiku
    Ortaggio, Marcello - Pravda, Vojtěch - Pravdová, Alena
    On higher dimensional Einstein spacetimes with a warped extra dimension.
    Classical and Quantum Gravity. Roč. 28, č. 10 (2011), s. 105006 ISSN 0264-9381
    Grant CEP: GA ČR GAP203/10/0749
    Výzkumný záměr: CEZ:AV0Z10190503
    Klíčová slova: higher-dimensional gravity * algebraic classification * Einstein spacetimes
    Kód oboru RIV: BA - Obecná matematika
    Impakt faktor: 3.320, rok: 2011

    We study a class of higher dimensional warped Einstein spacetimes with one extra dimension. These were originally identified by Brinkmann as those Einstein spacetimes that can be mapped conformally on other Einstein spacetimes, and have subsequently appeared in various contexts to describe, e.g., different braneworld models or warped black strings. After clarifying the relation between the general Brinkmann metric and other more specific coordinate systems, we analyze the algebraic type of the Weyl tensor of the solutions. In particular, we describe the relation between Weyl aligned null directions of the lower dimensional Einstein slices and of the full spacetime, which in some cases can be algebraically more special. Possible spacetime singularities introduced by the warp factor are determined via a study of scalar curvature invariants and Weyl components measured by geodetic observers.
    Trvalý link: http://hdl.handle.net/11104/0197099
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