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Peer-reviewedCC BY 4.0Physical Review Letters

Gravitational scattering of solitonic boson stars: Analytics vs Numerics

  • Thibault Damour
  • Tamanna Jain
  • Ulrich Sperhake
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Abstract

We study the scattering of boson-star binaries, taking into account three effects: point-mass gravitational, tidal, and short-range scalar-field interactions. We compare analytic results to the scattering angle extracted from four sequences of numerical-relativity simulations at fixed energy and varying impact parameter. The very good agreement exhibits the attractive (repulsive) effect of in-phase (out-of-phase) binaries, wich dominates at small impact parameters. We thus obtain the first effective-one-body potential, central for the construction of analytic gravitational-wave templates.

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Cite

BibTeXRIS
BibTeX
@article{damour2026gravitational,
  title = {{Gravitational scattering of solitonic boson stars: Analytics vs Numerics}},
  author = {Thibault Damour and Tamanna Jain and Ulrich Sperhake},
  journal = {Physical Review Letters},
  year = {2026},
  month = jul,
  doi = {10.1103/24g1-k5p2},
  eprint = {2512.00945},
  archivePrefix = {arXiv},
  url = {https://hal.science/hal-05403212v1},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Gravitational scattering of solitonic boson stars: Analytics vs Numerics
AU  - Thibault Damour
AU  - Tamanna Jain
AU  - Ulrich Sperhake
PY  - 2026
DA  - 2026/07/06
JO  - Physical Review Letters
DO  - 10.1103/24g1-k5p2
UR  - https://hal.science/hal-05403212v1
AB  - We study the scattering of boson-star binaries, taking into account three effects: point-mass gravitational, tidal, and short-range scalar-field interactions. We compare analytic results to the scattering angle extracted from four sequences of numerical-relativity simulations at fixed energy and varying impact parameter. The very good agreement exhibits the attractive (repulsive) effect of in-phase (out-of-phase) binaries, wich dominates at small impact parameters. We thus obtain the first effective-one-body potential, central for the construction of analytic gravitational-wave templates.
SN  - 0031-9007
SN  - 1079-7114
ER  -