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arXiv · 2103.14313

Gravitational field of scalar lumps in higher-derivative gravity

Luca Buoninfante·Yuichi Miyashita
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Abstract

We study the gravitational field sourced by localized scalar fields (lumps) in higher-derivative theories of gravity. By working in a static and spherically symmetric configuration, we find the linearized spacetime metrics generated by scalar lumps for several Lagrangians: the vanishing potential, i.e. free massive scalar field, a polynomial potential, and the tachyon potential in open string field theory. We perform the analysis for different theories of gravity: Einstein's general relativity, four-derivative gravity, and ghost-free nonlocal gravity. We discuss the limit of validity of our analysis and comment on possible future applications in the context of astrophysical compact objects.

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Luca Buoninfante, Yuichi Miyashita. 2021-03-26. Gravitational field of scalar lumps in higher-derivative gravity. https://doi.org/10.1103/physrevd.103.124068

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