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東海科學
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中文摘要
We calculate the covariant entropy bound for the Friedmann-Robertson-Walker(FRW) universe in higher-dimensional space-time. Let a(t) and b(t) represent the scale factor of the four-dimensional space-time and the extra dimensions respectively. Assuming b(t) = κan(t)(n < 0), then some constraints are obtained.
英文摘要
我們計算高維時空FRW宇宙的協變熵限。另a(t)和b(t)分別代表為四維時空和額外維度的刻度因子，若b(t)=ka^n(t)，則我們會找到一些限制條件