Is the observable Universe consistent with the cosmological principle?
文献类型：期刊论文
| 作者 | Aluri, Pavan; Cea, Paolo2; Chingangbam, Pravabati3,4; Chu, Ming-Chung; Clowes, Roger G.; Hutsemekers, Damien8; Kochappan, Joby P.; Lopez, Alexia M.; Liu, Lang10; Martens, Niels C. M. |
| 刊名 | CLASSICAL AND QUANTUM GRAVITY
 |
| 出版日期 | 2023 |
| 卷号 | 40期号:9页码:94001 |
| ISSN号 | 0264-9381 |
| 关键词 | MICROWAVE-ANISOTROPY-PROBE LARGE-SCALE STRUCTURE MODEL-INDEPENDENT CHARACTERIZATION HEMISPHERICAL POWER ASYMMETRY QUASAR POLARIZATION VECTORS STRONG GRAVITATIONAL LENSES H(-1) MPC SCALES BULK FLOW PECULIAR VELOCITIES NON-GAUSSIANITY |
| DOI | 10.1088/1361-6382/acbefc |
| 英文摘要 | The cosmological principle (CP)-the notion that the Universe is spatially isotropic and homogeneous on large scales-underlies a century of progress in cosmology. It is conventionally formulated through the Friedmann-Lemaitre-Robertson-Walker (FLRW) cosmologies as the spacetime metric, and culminates in the successful and highly predictive ?-Cold-Dark-Matter (?CDM) model. Yet, tensions have emerged within the ?CDM model, most notably a statistically significant discrepancy in the value of the Hubble constant, H (0). Since the notion of cosmic expansion determined by a single parameter is intimately tied to the CP, implications of the H (0) tension may extend beyond ?CDM to the CP itself. This review surveys current observational hints for deviations from the expectations of the CP, highlighting synergies and disagreements that warrant further study. Setting aside the debate about individual large structures, potential deviations from the CP include variations of cosmological parameters on the sky, discrepancies in the cosmic dipoles, and mysterious alignments in quasar polarizations and galaxy spins. While it is possible that a host of observational systematics are impacting results, it is equally plausible that precision cosmology may have outgrown the FLRW paradigm, an extremely pragmatic but non-fundamental symmetry assumption. |
| 学科主题 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/28007]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.Sogang Univ, CQUeST, Seoul 121742, South Korea 2.Indian Inst Technol BHU, Dept Phys, Varanasi 221005, India 3.INFN, Sez Bari, Via Amendola 173, I-70126 Bari, Italy 4.Indian Inst Astrophys, Koramangala 2 Block, Bangalore 560034, India 5.Korea Inst Adv Study, Sch Phys, 85 Hoegiro, Seoul 02455, South Korea 6.Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong, Peoples R China 7.Chinese Univ Hong Kong, Inst Theoret Phys, Shatin, Hong Kong, Peoples R China 8.Clowes, Roger G.; Lopez, Alexia M.] Univ Cent Lancashire, Jeremiah Horrocks Inst, Preston PR1 2HE, England 9.Univ Liege, Inst Astrophys & Geophys B5c, FRS FNRS, B-4000 Liege, Belgium 10.Asia Pacific Ctr Theoret Phys, Pohang 37673, South Korea |
| 推荐引用方式 GB/T 7714 | Aluri, Pavan,Cea, Paolo,Chingangbam, Pravabati,et al. Is the observable Universe consistent with the cosmological principle?[J]. CLASSICAL AND QUANTUM GRAVITY,2023,40(9):94001. |
| APA | Aluri, Pavan.,Cea, Paolo.,Chingangbam, Pravabati.,Chu, Ming-Chung.,Clowes, Roger G..,...&Zhao, Wen.(2023).Is the observable Universe consistent with the cosmological principle?.CLASSICAL AND QUANTUM GRAVITY,40(9),94001. |
| MLA | Aluri, Pavan,et al."Is the observable Universe consistent with the cosmological principle?".CLASSICAL AND QUANTUM GRAVITY 40.9(2023):94001. |
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来源：理论物理研究所
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