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

<table>Variation of deceleration parameter <svg height="9.875" id="M161" style="vertical-align:-2.29482pt" version="1.1" viewbox="0 0 7.9124999 9.875" width="7.9124999" xmlns="http://www.w3.org/2000/svg">
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<tspan style="font-size: 12.50px; " x="0" y="0">𝑞</tspan>
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</svg> with cosmic time <svg height="9.125" id="M162" 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)">
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<tspan style="font-size: 12.50px; " x="0" y="0">𝑡</tspan>
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International Scholarly Research Notices

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Figure 3

Figure 3: Viscous Bianchi Type I Universe with Stiff Matter and Decaying Vacuum Energy Density 