Abstract: Equation of state parameter depending on energy density is derived using a gauge – like condition. It shows the possibility of expressing the accelerating expansion with positive energy. when , It laid out energy density constrains as, a gauge – like condition has been used in this work, is a result of multiplication of special constructed octonion. Octonion that used in this model verified as mixed octonion, constructed out of two quaternions, one represents the field and the other is its dual field.
Keywords: Equation of state parameter, accelerating expansion, universe, dark energy.
Title: Variable Equation of State Parameter for Accelerating Expansion of the Universe
Author: Mahgoub.A. Salih
International Journal of Mathematics and Physical Sciences Research
ISSN 2348-5736 (Online)
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