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- W4366498265 abstract "We provide an algorithm and a publicly available code to numerically evolve multicomponent Schr{o}dinger-Poisson (SP) systems with a SO($n$) symmetry, including attractive or repulsive self-interactions in addition to gravity. Focusing on the case where the SP system represents the non-relativistic limit of a massive vector field, non-gravitational self-interactions (in particular spin-spin interactions) introduce complexities related to mass and spin conservation which are not present in purely gravitational systems. We address them with an analytical solution for the `kick' step in the algorithm, where we are able to decouple the multicomponent system completely. Equipped with this analytical solution, the full field evolution is second order accurate, preserves spin and mass to machine precision, and is reversible. Our algorithm allows for an expanding universe relevant for cosmology, and the inclusion of external potentials relevant for laboratory settings." @default.
- W4366498265 created "2023-04-22" @default.
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- W4366498265 date "2023-04-01" @default.
- W4366498265 modified "2023-09-29" @default.
- W4366498265 title "i-SPin: an integrator for multicomponent Schrödinger-Poisson systems with self-interactions" @default.
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- W4366498265 doi "https://doi.org/10.1088/1475-7516/2023/04/053" @default.
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