Higher Derivative Quantum Gravity Near Four Dimensions
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| Format: | Artículo científico |
| Sprache: | en |
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Sociedade Brasileira de Física
2005
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| author | Guilherme de Berredo-Peixoto |
| author_facet | Guilherme de Berredo-Peixoto |
| contents | Higher Derivative Quantum Gravity Near Four Dimensions Guilherme de Berredo-Peixoto Ilya L. Shapiro Física, Astronomía y Matemáticas We investigate the role of the Gauss-Bonnet term for the n = 4 and n = 4¡e renormalization group, for bothconformal and general versions of the theory. The cancellation of the quantum effects of the Gauss-Bonnet termin the n = 4 limit represents an efficient test for the correctness of previous calculations and also resolves twolong-standing problems concerning quantum corrections in quantum gravity. In the case of n = 4¡e renormalizationgroup there is a number of new nontrivial fixed points, that may indicate to a rich nonperturbativestructure of the theory. At the same time, if we do not treat e as a small parameter, the renormalization group isspoiled by an extensive gauge fixing ambiguity. 2005 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46435722 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.4B Vol.35 |
| format | Artículo científico |
| id | redalyc_46435722 |
| institution | Redalyc |
| language | en |
| publishDate | 2005 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Higher Derivative Quantum Gravity Near Four Dimensions Guilherme de Berredo-Peixoto Física, Astronomía y Matemáticas Higher Derivative Quantum Gravity Near Four Dimensions Guilherme de Berredo-Peixoto Ilya L. Shapiro Física, Astronomía y Matemáticas We investigate the role of the Gauss-Bonnet term for the n = 4 and n = 4¡e renormalization group, for bothconformal and general versions of the theory. The cancellation of the quantum effects of the Gauss-Bonnet termin the n = 4 limit represents an efficient test for the correctness of previous calculations and also resolves twolong-standing problems concerning quantum corrections in quantum gravity. In the case of n = 4¡e renormalizationgroup there is a number of new nontrivial fixed points, that may indicate to a rich nonperturbativestructure of the theory. At the same time, if we do not treat e as a small parameter, the renormalization group isspoiled by an extensive gauge fixing ambiguity. 2005 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46435722 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.4B Vol.35 |
| title | Higher Derivative Quantum Gravity Near Four Dimensions |
| topic | Física, Astronomía y Matemáticas |
| url | https://www.redalyc.org/articulo.oa?id=46435722 |