Pirinccioglu, NurettinSert, Ilker2024-04-242024-04-2420120008-4204https://doi.org/10.1139/P11-146https://hdl.handle.net/11468/17812Differences between scalar field and scalar density solutions are explored using a Robertson-Walker (RW) metric, and a nonrelativistic Hamiltonian is derived for a scalar density field in the post-newtonian approximation. The results are compared with those of a scalar field. The expanding universe in a RW metric and a post-newtonian solution of the Klein-Gordon equation are discussed separately.eninfo:eu-repo/semantics/openAccess[No Keyword]Article9019195WOS:0002997919000122-s2.0-8485626624810.1139/P11-146Q3Q3