Cosmological constant from gauge fields on extra dimensions
學年 95
學期 1
出版(發表)日期 2006-12-01
作品名稱 Cosmological constant from gauge fields on extra dimensions
著者 Cho, Hing-Tong; Ho, Choon-Lin; Ng, Kin-Wang
單位 淡江大學物理學系
出版者 Amsterdam: Elsevier BV * North-Holland
著錄名稱、卷期、頁數 Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics 643(2), pp.71-75
摘要 We present a new model of dark energy which could explain the observed accelerated expansion of our Universe. We show that a five-dimensional Einstein-Yang-Mills theory defined in a flat Friedmann-Robertson-Walker universe compactified on a circle possesses degenerate vacua in four dimensions. The present Universe could be trapped in one of these degenerate vacua. With the natural requirement that the size of the extra dimension could be of the GUT scale or smaller, the energy density difference between the degenerate vacua and the true ground state can provide us with just the right amount of dark energy to account for the observed expansion rate of our Universe.
關鍵字 High Energy Physics - Phenomenology (hep-ph);Astrophysics (astro-ph)
語言 en
ISSN 0370-2693
期刊性質 國外
收錄於 SCI
通訊作者 Ng, Kin-Wang
國別 NLD
出版型式 紙本

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