Abstract
Dark bubble cosmology is an alternative paradigm to compactification, which can circumvent issues of moduli stabilization and scale separation. In this paper we investigate how electromagnetic fields can be incorporated in this framework. Worldvolume fields backreact on the ambient universe in which the bubble expands, which in turn affects the energy-momentum distribution and the effective gravity induced on the brane. We compute these effects, showing that the resulting four-dimensional cosmology consistently includes electromagnetic waves.
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Acknowledgments
We thank Souvik Banerjee for collaboration at an early stage of this work, and Thomas Van Riet for discussions. DP would like to thank the Centre for Interdisciplinary Mathematics (CIM) for financial support. The work of SG was conducted with funding awarded by the Swedish Research Council grant VR 2022-06157.
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Basile, I., Danielsson, U., Giri, S. et al. Shedding light on dark bubble cosmology. J. High Energ. Phys. 2024, 112 (2024). https://doi.org/10.1007/JHEP02(2024)112
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DOI: https://doi.org/10.1007/JHEP02(2024)112