Use este identificador para citar ou linkar para este item:
https://locus.ufv.br//handle/123456789/24109
Tipo: | Artigo |
Título: | Loop quantization of a model for D = 1 + 2 (anti)de sitter gravity coupled to topological matter |
Autor(es): | Oporto, Zui Constantinidis, Clisthenis P. Piguet, Olivier |
Abstract: | We present a complete quantization of Lorentzian D = 1 + 2 gravity with cosmological constant, coupled to a set of topological matter fields. The approach of loop quantum gravity is used thanks to a partial gauge fixing leaving a residual gauge invariance under a compact semi-simple gauge group, namely Spin(4) = SU(2) × SU(2). A pair of quantum observables is con- structed, which are non-trivial despite being gauge-equivalent to zero at the classical level. A semi-classical approximation based on appropriately defined coherent states shows non-vanishing expectation values for them, thus not reproducing their classical behaviour. |
Palavras-chave: | Quantum gravity Topological theories Loop quantization Lower dimensional gravity |
Editor: | Classical and Quantum Gravity |
Tipo de Acesso: | Open Access |
URI: | http://dx.doi.org/10.1088/0264-9381/32/5/055007 http://www.locus.ufv.br/handle/123456789/24109 |
Data do documento: | 2015 |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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artigo.pdf | texto completo | 916,79 kB | Adobe PDF | Visualizar/Abrir |
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