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in Refs. (1{3). The amount of dark energy is almost 70% of total energy of the universe. This energy causes the present cosmic acceleration. The dark energy is a hypothetical form of energy which permeates the whole space and tends to increase rate of expansion of the universe. The existence of dark energy is the most popular way to explain recent observations that the universe appears to be expanding at an accelerating rate. The standard Friedman{Robertson{Walker (FRW) model with the real scalar flelds can be a candidate to describe the dark energy. Also the presence of acceleration in cosmology leads us to consider scalar flelds. In order to investigate the rate of expansion we obtain flrst-order difierential equation which solves the corresponding equation of motion. Evidently, the presence of flrst-order equation eases the process of solving speciflc models and also can be used to fully understand the related cosmic evolution. The key motivation for the present work has appeared after the work (4) which deals with FRW cosmology driven by real scalar fleld. As we know, if the scale factor a(t) is known, the potential V (t) and

Deformation of Two Coupled Scalar Fields with Cosmological Solution