ngravs: Distinct gravitational interactions in gadget-2

This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018) Abstract We discuss an extension of the massively parallel cosmological simulation code gadget-2, which now enables investigation of multiple and distinct gravitational force laws, provided they are dominated by a constant scaling of the Newtonian force. In addition to simplifying investigations of a universally modified force law, the ngravs extension provides a foundation for state-of-the-art collisionless cosmological simulations of exotic gravitational scenarios. We briefly review the algorithms u... Title of program: Gadget-2.0.7-ngravs Catalogue Id: AFAV_v1_0 Nature of problem N-body cosmological codes are traditionally designed to investigate a single gravitating species interacting via the Newtonian force law. There exist viable extensions to General Relativity [1], however, which predict weakfield, slow-motion limits featuring distinct gravitational force laws between distinct particle species. To enable investigation and constraint of these theories with available astrophysical data, a necessary first step is to extend an N-body simulator to handle distinct gravit ... Versions of this program held in the CPC repository in Mendeley Data AFAV_v1_0; Gadget-2.0.7-ngravs; 10.1016/j.cpc.2016.06.018