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1篇 您的检索式:作者名="S.D.Pathak"
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1Gauging universe expansion via scalar fields显示文摘In this study,we investigate the expansion of the FRLW universe in the open,closed,and flat geometries.The universe is dominated by a scalar field(spatially homogeneous)as a source of dark energy.We consider the three different classes of scalar fields-quintessence,tachyonic,and phantom field-for our analysis.A mathematical analysis is carried out by considering these three scalar fields with exponential and power-law potentials.Both potentials give exponential expansion in the open,closed,and flat FRLW universes.It is found that quintessence,tachyonic,and phantom scalar fields are indistinguishable under the slow roll approximation.Devanarayanan Rajeeb Kumar S.D.Pathak Vikash Kumar Ojha 2023Chinese Physics C2023,47,5:0
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