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DOE OSTI · 3011548

Multi-Galileons in curved space

Garoffolo, Alice [University of Pennsylvania, Philadelphia, PA (United States)] (ORCID:0000000201254577)·Hinterbichler, Kurt [Case Western Reserve University, Cleveland, OH (United States)] (ORCID:0000000307616919)·Trodden, Mark [University of Pennsylvania, Philadelphia, PA (United States)] (ORCID:0000000168646711)
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Abstract

Using the probe brane construction of higher derivative effective field theories, extended to higher co-dimensions and curved spaces, we construct galileon and DBI theories on de Sitter space with N fields and an so (N) internal symmetry, non-linearly realizing the symmetries of a higher dimensional de Sitter space. In some cases, the theory admits a non-trivial vacuum that spontaneously breaks the so (N) symmetry, and around this vacuum the Goldstone modes have vanishing kinetic terms and become infinitely strongly coupled. This gives an example of a scalar effective field theory with two de Sitter vacua, one of which appears to have Boulware-Deser-like ghosts, and one of which does not.

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BibTeXRIS

Garoffolo, Alice [University of Pennsylvania, Philadelphia, PA (United States)] (ORCID:0000000201254577), Hinterbichler, Kurt [Case Western Reserve University, Cleveland, OH (United States)] (ORCID:0000000307616919), Trodden, Mark [University of Pennsylvania, Philadelphia, PA (United States)] (ORCID:0000000168646711). 2025-09-16. Multi-Galileons in curved space. https://doi.org/10.1007/jhep09(2025)115

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