Approximate solutions to the nonlinear Klein-Gordon equation in de Sitter spacetime
Approximate solutions to the nonlinear Klein-Gordon equation in de Sitter spacetime
Abstract We consider initial value problems for the nonlinear Klein-Gordon equation in de Sitter spacetime. We use the differential transform method for the solution of the initial value problem. In order to show the accuracy of results for the solutions, we use the variational iteration method with Adomian’s polynomials for …