Sobre el acople de campos vectoriales al invariante de Gauss-Bonnet
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Bueno-Sánchez, J. C., Orjuela- Quintana, J. B., & Valenzuela-Toledo, C. A. (2021). Sobre el acople de campos vectoriales al invariante de Gauss-Bonnet. Rev. Acad. Colomb. Cienc. Ex. Fis. Nat., 45(174), 67-82. https://doi.org/10.18257/raccefyn.1146

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Los modelos inflacionarios que incluyen campos vectoriales han despertado una gran interés durante la  última década. Este interés se debe al hecho de que estos campos podrán contribuir, o incluso ser totalmente responsables, de la perturbación en la curvatura impresa en la radiación cósmica de fondo. Sin embargo, la necesaria ruptura de la invariancia conforme del campo vectorial durante inflación no está exenta de problemas. En los  últimos años se ha mostrado que surgen una serie de inestabilidades que ponen en peligro la coherencia de la teoría cuando la invariancia conforme se rompe mediante un acoplamiento no mínimo a la gravedad. En este artículo consideramos un campo vectorial masivo, no mínimamente acoplado a la gravedad a través de la invariante Gauss-Bonnet, e investigamos si el campo vectorial puede desempeñar el rol de curvatón al tiempo que evade la aparación de inestabilidades y preserva la isotropía a gran escala.

Palabras clave

Inflación; anisotropía estadística; modelos con campos vectoriales; invariante de Gauss-Bonnet.
https://doi.org/10.18257/raccefyn.1146
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