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arXiv · 1905.13091

Stringy (Galilei) Newton-Hooke Chern-Simons Gravities

Luis Avilés·Joaquim Gomis·Diego Hidalgo
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Abstract

We construct Chern-Simons gravities in $(2+1)$-dimensional space-time considering the Stringy Galilei algebra both with and without non-central extensions. In the first case, there is an invariant and non-degenerate bilinear form, however, the field equations do not allow to express the spin connections in terms of the dreibeins. In the second case, there is no invariant non-degenerate bilinear form. Therefore, in both cases, we do not have an ordinary gravity theory. Instead, if we consider the stringy Newton-Hooke algebra with extensions as gauge group we have an invariant non-degenerate metric and from the field equations, we express the spin connections in terms of the geometric fields.

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Luis Avilés, Joaquim Gomis, Diego Hidalgo. 2019-05-30. Stringy (Galilei) Newton-Hooke Chern-Simons Gravities. https://doi.org/10.1007/jhep09(2019)015

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