Viscous Bianchi Type I Universe with Stiff Matter and Decaying Vacuum Energy Density

<table>Variation of matter energy density <svg height="9.875" id="M159" style="vertical-align:-2.29482pt" version="1.1" viewbox="0 0 7.9749999 9.875" width="7.9749999" xmlns="http://www.w3.org/2000/svg">
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<g transform="translate(72,-64.1)">
<text transform="matrix(1,0,0,-1,-71.95,66.44)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝜌</tspan>
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</g>
</g>
</svg> with cosmic time <svg height="9.125" id="M160" style="vertical-align:-0.11285pt" version="1.1" viewbox="0 0 5.0124998 9.125" width="5.0124998" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,9.125)">
<g transform="translate(72,-64.7)">
<text transform="matrix(1,0,0,-1,-71.95,64.86)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝑡</tspan>
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</g>
</svg>.</table>

International Scholarly Research Notices

fig2

Figure 2

Figure 2: Viscous Bianchi Type I Universe with Stiff Matter and Decaying Vacuum Energy Density 