HOw the dark Energy model of Universe can be explained in the most popular Existing Scalar field Model?. We think that the Scalar feild model is not suitable for dark energy...... "The stress tensor for tachyonic scalar feild model to make the vaccum energy variable with time] will allow a variety of models with time dependent cosmological constant and probably will not help to understand dark energy at any deeper level because scalar feild model requires a suitable designer to architect such models of universe. These models are non predictive and degenerate, we need to assume the cosmological constant zero and the difference between cosmological constant and scalar feild model varies with time. If we assume that dark energy in universe is due to a cosmological constant then such universe will be asytotically de sitter universe at late epoch. Such a universe will have* spend most of time in a de- sitter phase which is time translation invarient- The first de-sitter phase corrospond to inflation and second composed to acclerated expansion arising from cosmological constant....." Taken a part from The Current Science-2005
Dr Pranab Kr Bhattacharya
Mr Rupak Bhattacharya
Mr Ritwik Bhattacharya
Mrs Dahlia Mukherjee
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