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SUMMARY:Binary Boson stars in Strong Field: Post-Minkowskian\, Effective-o
 ne-body formalism\, and Numerical Relativity
DTSTART:20260521T120000Z
DTEND:20260521T130000Z
DTSTAMP:20260714T134600Z
UID:indico-event-16434@indico.math.cnrs.fr
DESCRIPTION:Speakers: Tamanna Jain (LPENS\, Paris)\n\nIn this talk\, I wil
 l present our recent work on scattering of two boson stars by taking into 
 account three effects: point-mass gravitational\, tidal\, and short-range 
 scalar-field interactions. We first derive the analytical expressions of t
 he scattering angle using PM-EFT techniques\, providing the first analytic
 al treatment of boson stars as a two-body problem. We then compare analyti
 c results to the scattering angle extracted from four sequences of numeric
 al-relativity simulations at fixed energy and varying impact parameter. Th
 e very good agreement exhibits the attractive (repulsive) effect of in-pha
 se (out-of-phase) binaries. For small impact parameters\, where the stars 
 approach more closely before separating to infinity\, the short-range scal
 ar-field interaction is found to dominate.\n\nhttps://indico.math.cnrs.fr/
 event/16434/
LOCATION:Salle 1180\, bâtiment E2 (Salle des séminaires )
URL:https://indico.math.cnrs.fr/event/16434/
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