PhysRevD.86.064018.pdf (554.76 kB)
Particle motion in weak relativistic gravitational fields
journal contribution
posted on 2023-06-08, 12:38 authored by Miki Obradovic, Martin Kunz, Mark HindmarshMark Hindmarsh, Ilian IlievIlian IlievWe derive the geodesic equation of motion in the presence of weak gravitational fields produced by relativistic sources such as cosmic strings, decomposed into scalar, vector and tensor parts. To test the result, we perform the first N-body simulations with relativistic weak gravitational external fields. Our test case is a moving straight string, for which we recover the well-known result for the impulse on nonrelativistic particles. We find that the vector (gravito-magnetic) force is an essential contributor. Our results mean that it is now possible to incorporate straightforwardly into N-body simulations all weak relativistic sources, including networks of cosmic defects.
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- Published
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- Published version
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Physical Review DISSN
2470-0010Publisher
American Physical SocietyPublisher URL
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6Volume
86Page range
064018-064029Department affiliated with
- Physics and Astronomy Publications
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- Yes
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- Yes
Legacy Posted Date
2012-10-18First Open Access (FOA) Date
2012-10-18First Compliant Deposit (FCD) Date
2012-10-17Usage metrics
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