Vsevolod R. Ivanov

Integrability of $$R^2$$ gravity cosmological models with radiation

Abstract We consider $$R^2$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>R</mml:mi> <mml:mn>2</mml:mn> </mml:msup> </mml:math> gravity cosmological models with radiation. We find the general solution to the trace equation $$\Box R=0$$ <mml:math xm...