| Spectrum of the axion dark sector | |
| Stott, Matthew J.1; Marsh, David J. E.1; Pongkitivanichkul, Chakrit1,2,3; Price, Layne C.4; Acharya, Bobby S.1,5 | |
| 刊名 | Physical review d
 |
| 2017-10-11 | |
| 卷号 | 96期号:8页码:39 |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/physrevd.96.083510 |
| 通讯作者 | Stott, matthew j.(matthew.stott@kcl.ac.uk) ; Marsh, david j. e.(david.marsh@kcl.ac.uk) ; Pongkitivanichkul, chakrit(chakpo@kku.ac.th) ; Price, layne c.(laynep@andrew.cmu.edu) ; Acharya, bobby s.(bobby.acharya@kcl.ac.uk) |
| 英文摘要 | Axions arise in many theoretical extensions of the standard model of particle physics, in particular the "string axiverse." if the axion masses, m(a), and (effective) decay constants, f(a), lie in specific ranges, then axions contribute to the cosmological dark matter and dark energy densities. we compute the background cosmological (quasi) observables for models with a large number of axion fields, n(ax) similar to o(10-100), with the masses and decay constants drawn from statistical distributions. this reduces the number of parameters from 2n(ax) to a small number of "hyperparameters." we consider a number of distributions, from those motivated purely by statistical considerations to those where the structure is specified according to a class of m-theory models. using bayesian methods, we are able to constrain the hyperparameters of the distributions. in some cases, the hyperparameters can be related to string theory, e.g., constraining the number ratio of axions to moduli, or the typical decay constant scale needed to provide the correct relic densities. our methodology incorporates the use of both random matrix theory and bayesian networks. |
| WOS关键词 | COSMOLOGICAL PARAMETER-ESTIMATION ; CALABI-YAU ORIENTIFOLDS ; SUPERSYMMETRY BREAKING ; RANEY DISTRIBUTIONS ; LARGEST EIGENVALUE ; INVISIBLE AXION ; MATTER ; WISHART ; CONSTRAINTS ; MATRICES |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| WOS类目 | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000412749000003 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2177131 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Stott, Matthew J.; Marsh, David J. E.; Pongkitivanichkul, Chakrit; Price, Layne C.; Acharya, Bobby S. |
| 作者单位 | 1.Univ London, Dept Phys, Kings Coll London, Theoret Particle Phys & Cosmol Grp, London WC2R 2LS, England 2.Inst High Energy Phys, Ctr Future High Energy Phys, Beijing 100049, Peoples R China 3.Khon Kaen Univ, Dept Phys, Khon Kaen 40002, Thailand 4.Carnegie Mellon Univ, Dept Phys, McWilliams Ctr Cosmol, Pittsburgh, PA 15213 USA 5.Abdus Salam Int Ctr Theoret Phys, Str Costiera 11, I-34151 Trieste, Italy |
| 推荐引用方式 GB/T 7714 | Stott, Matthew J.,Marsh, David J. E.,Pongkitivanichkul, Chakrit,et al. Spectrum of the axion dark sector[J]. Physical review d,2017,96(8):39. |
| APA | Stott, Matthew J.,Marsh, David J. E.,Pongkitivanichkul, Chakrit,Price, Layne C.,&Acharya, Bobby S..(2017).Spectrum of the axion dark sector.Physical review d,96(8),39. |
| MLA | Stott, Matthew J.,et al."Spectrum of the axion dark sector".Physical review d 96.8(2017):39. |
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