Bouncing universe of entropy-corrected Friedmann equations

被引:10
作者
Salehi, Amin [1 ]
Mahmoudi-Fard, Mojtaba [1 ]
机构
[1] Lorestan Univ, Dept Phys, Khorramabad, Iran
来源
EUROPEAN PHYSICAL JOURNAL C | 2018年 / 78卷 / 03期
关键词
BLACK-HOLE ENTROPY; CARDY-VERLINDE FORMULA; LOGARITHMIC CORRECTIONS; INFLATIONARY COSMOLOGY; EMERGENT UNIVERSE; ORDER CORRECTIONS; ENERGY CONDITIONS; MODIFIED GRAVITY; THERMODYNAMICS; CREATION;
D O I
10.1140/epjc/s10052-018-5727-y
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
In this paper, we investigate the possibility of obtaining bouncing-oscillating solution in modified Friedmann equations with logarithmic entropy corrected, S = A/4G + alpha In A/4G + beta 4G/A, for positive, negative and zero values of (alpha, beta) pre-factors and all kinds of curved universes. The results are argued using the dynamical system techniques and by employing the phase plane analysis for full classification of the nonsingular evolutions. Our analysis indicates that it is possible to have an oscillating universe as well as a bounce universe for k = 1 and k = -1 curvatures. In k = 1 case, both positive and negative values of alpha and beta can make bouncing-oscillating solution, while ink = -1 case, only the positive value of a with negative value of beta can make a bounce. Also the flat universe have no bounce solution.
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页数:12
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