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arXiv · 1809.03482

T-dual cosmological solutions in double field theory

Robert Brandenberger·Renato Costa·Guilherme Franzmann·Amanda Weltman
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Abstract

We investigate the cosmological solutions coming from the double field theory equations of motion after coupling a matter source to them. Assuming constant dilaton and imposing the section condition with respect to the regular coordinates leads to a universe dominated by momentum modes while imposing the section condition with respect to the dual coordinates naturally leads to a universe dominated by momentum modes. We show that both regimes have asymptotic behaviours related by T-duality. This hints towards defining a duality between the clocks considered in each regime and interpreting winding modes as being radiation from the point of view of a Euclidean time.

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Robert Brandenberger, Renato Costa, Guilherme Franzmann, Amanda Weltman. 2018-09-10. T-dual cosmological solutions in double field theory. https://doi.org/10.1103/physrevd.99.023531

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