New interpretation of matter-antimatter asymmetry based on branes and possible observational consequences
文献类型：期刊论文
| 作者 | Cai, Rong-Gen ; Li, Tong; Li, Xue-Qian; Wang, Xun; Cai, RG , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
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| 刊名 | PHYSICAL REVIEW D
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| 出版日期 | 2007 |
| 卷号 | 76期号:10页码:- |
| 关键词 | Alpha-magnetic-spectrometer Extra Dimensions Violation Cosmology Universe Fields Radion Bulk Law |
| ISSN号 | 1550-7998 |
| 英文摘要 | Motivated by the alpha-magnetic-spectrometer (AMS) project, we assume that after the big bang or inflation epoch, antimatter was repelled onto one brane which is separated from our brane where all the observational matter resides. It is suggested that CP may be spontaneously broken, the two branes would correspond to ground states for matter and antimatter, respectively. Generally a complex scalar field which is responsible for the spontaneous CP violation, exists in the space between the branes. The matter and antimatter on the two branes attract each other via gravitational force, meanwhile the scalar field causes a Casimir effect to result in a repulsive force against the gravitation. We find that the Casimir force is much stronger than the gravitational force, as long as the separation of the two branes is small. Thus at early epoch after the big bang, the two branes were closer and then have been separated by the Casimir repulsive force from each other. The trend will continue until the separation is sufficiently large and then the gravitational force observed in our four-space would obviously deviate from the Newton's universal gravitational law. We suppose that there is a potential barrier at the brane boundary, which is similar to the surface tension for a water membrane. The barrier prevents the matter (antimatter) particles from entering the space between two branes and jump from one brane to another. However, by the quantum tunneling, a sizable antimatter flux may come to our brane and be observed by the AMS. In this work by considering two possible models, i.e. the naive flat space-time and Randall-Sundrum models, and using the observational data on the visible matter in our universe as inputs, we derive the antimatter flux which comes to our detector in the nonrelativistic approximation and make a rough numerical estimate of possible numbers of antihelium at AMS. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000251327400025 |
| 公开日期 | 2012-08-02 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/5639]  |
| 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 | Cai, RG , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cai, Rong-Gen,Li, Tong,Li, Xue-Qian,et al. New interpretation of matter-antimatter asymmetry based on branes and possible observational consequences[J]. PHYSICAL REVIEW D,2007,76(10):-. |
| APA | Cai, Rong-Gen,Li, Tong,Li, Xue-Qian,Wang, Xun,&Cai, RG , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.(2007).New interpretation of matter-antimatter asymmetry based on branes and possible observational consequences.PHYSICAL REVIEW D,76(10),-. |
| MLA | Cai, Rong-Gen,et al."New interpretation of matter-antimatter asymmetry based on branes and possible observational consequences".PHYSICAL REVIEW D 76.10(2007):-. |
入库方式： OAI收割
来源：理论物理研究所
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