Discrete gravity and its continuum limit
文献类型：期刊论文
| 作者 | Ling, Y; Ling, Y , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China. |
| 刊名 | MODERN PHYSICS LETTERS A
 |
| 出版日期 | 2005 |
| 卷号 | 20期号:3页码:213-225 |
| ISSN号 | 0217-7323 |
| 英文摘要 | Recently Gambini and Pullin proposed a new consistent discrete approach to quantum gravity and applied it to cosmological models. One remarkable result of this approach is that the cosmological singularity can be avoided in a general fashion. However, whether the continuum limit of such discretized theories exists is model dependent. In the case of massless scalar field coupled to gravity with Lambda = 0, the continuum limit can only be achieved by fine tuning the recurrence constant. We regard this failure as the implication that cosmological constant should vary with time. For this reason we replace the massless scalar field by Chaplygin gas which may contribute an effective cosmological constant term with the evolution of the universe. It turns out that the continuum limit can indeed be reached in this case. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000227085000005 |
| 公开日期 | 2012-08-30 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13896]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Ling, Y , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Ling, Y,Ling, Y , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China.. Discrete gravity and its continuum limit[J]. MODERN PHYSICS LETTERS A,2005,20(3):213-225. |
| APA | Ling, Y,&Ling, Y , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China..(2005).Discrete gravity and its continuum limit.MODERN PHYSICS LETTERS A,20(3),213-225. |
| MLA | Ling, Y,et al."Discrete gravity and its continuum limit".MODERN PHYSICS LETTERS A 20.3(2005):213-225. |
入库方式： OAI收割
来源：理论物理研究所
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