2008•Physics Letters BOpen access

Interaction between scalar field and ideal fluid with inhomogeneous equation of state

Writambhara Chakraborty, Ujjal Debnath

Abstract

In this Letter we study a model of interaction between the scalar field and an inhomogeneous ideal fluid. We have considered two forms of the ideal fluid and a power law expansion for the scale factor. We have solved the equations for the energy densities. Also we show that besides being a dark energy model to explain the cosmic acceleration, this model shows a decaying nature of the scalar field potential and the interaction parameter.

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Key concepts: Scalar field, Perfect fluid, Physics, Equation of state, Friedmann equations, Scalar (mathematics), Scalar theories of gravitation, Field (mathematics)