Dark Energy: is it 'just' Einstein's Cosmological Constant ??

被引：3
作者：
Lahav, Ofer [1 ]
机构：
[1] UCL, Dept Phys & Astron, London, England
来源：
CONTEMPORARY PHYSICS | 2020年 / 61卷 / 02期
基金：
欧洲研究理事会;
关键词：
Cosmology; Dark Matter; Cosmological Constant; Dark Energy; galaxy surveys;
D O I：
10.1080/00107514.2020.1837456
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The Cosmological Constant ?, a concept introduced by Einstein in 1917, has been with us ever since in different variants and incarnations, including the broader concept of 'Dark Energy'. Current observations are consistent with a value of ? corresponding to about present-epoch 70% of the critical density of the Universe. This is causing the speeding up (acceleration) of the expansion of the Universe. Coupled with the flatness of the Universe and the amount of 30% matter (5% baryonic and 25% 'Cold Dark Matter'), this forms the so-called '?CDM standard model'. However, there are currently indications of inconsistencies ('tensions' ) within ?CDM on different values of the Hubble Constant and the clumpiness factor. Also, time variation of Dark Energy and slight deviations from General Relativity are not ruled out yet. Several grand projects are underway to test ?CDM further. If ?CDM will remain the standard model, then the ball is back in the theoreticians' court, to explain the physical meaning of ?. Is ? an alteration to the geometry of the Universe, or the energy of the vacuum? Or maybe it is something different, that manifests a yet unknown higher-level theory?
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收藏
页码：132 / 145
页数：14
相关论文
共 41 条
  • [1] University lies in legal limbo
    Abbott, Alison
    [J]. NATURE, 2017, 550 (7677)
  • [2] GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
    Abbott, B. P.
    Abbott, R.
    Abbott, T. D.
    Acernese, F.
    Ackley, K.
    Adams, C.
    Adams, T.
    Addesso, P.
    Adhikari, R. X.
    Adya, V. B.
    Affeldt, C.
    Afrough, M.
    Agarwal, B.
    Agathos, M.
    Agatsuma, K.
    Aggarwal, N.
    Aguiar, O. D.
    Aiello, L.
    Ain, A.
    Ajith, P.
    Allen, B.
    Allen, G.
    Allocca, A.
    Altin, P. A.
    Amato, A.
    Ananyeva, A.
    Anderson, S. B.
    Anderson, W. G.
    Angelova, S. V.
    Antier, S.
    Appert, S.
    Arai, K.
    Araya, M. C.
    Areeda, J. S.
    Arnaud, N.
    Arun, K. G.
    Ascenzi, S.
    Ashton, G.
    Ast, M.
    Aston, S. M.
    Astone, P.
    Atallah, D. V.
    Aufmuth, P.
    Aulbert, C.
    AultONeal, K.
    Austin, C.
    Avila-Alvarez, A.
    Babak, S.
    Bacon, P.
    Bader, M. K. M.
    [J]. PHYSICAL REVIEW LETTERS, 2017, 119 (16)
  • [3] The Dark Energy Survey: more than dark energy - an overview
    Abbott, T.
    Abdalla, F. B.
    Aleksic, J.
    Allam, S.
    Amara, A.
    Bacon, D.
    Balbinot, E.
    Banerji, M.
    Bechtol, K.
    Benoit-Levy, A.
    Bernstein, G. M.
    Bertin, E.
    Blazek, J.
    Bonnett, C.
    Bridle, S.
    Brooks, D.
    Brunner, R. J.
    Buckley-Geer, E.
    Burke, D. L.
    Caminha, G. B.
    Capozzi, D.
    Carlsen, J.
    Carnero-Rosell, A.
    Carollo, M.
    Carrasco-Kind, M.
    Carretero, J.
    Castander, F. J.
    Clerkin, L.
    Collett, T.
    Conselice, C.
    Crocce, M.
    Cunha, C. E.
    D'Andrea, C. B.
    da Costa, L. N.
    Davis, T. M.
    Desai, S.
    Diehl, H. T.
    Dietrich, J. P.
    Dodelson, S.
    Doel, P.
    Drlica-Wagner, A.
    Estrada, J.
    Etherington, J.
    Evrard, A. E.
    Fabbri, J.
    Finley, D. A.
    Flaugher, B.
    Foley, R. J.
    Fosalba, P.
    Frieman, J.
    [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2016, 460 (02) : 1270 - 1299
  • [4] First Cosmology Results using Type Ia Supernovae from the Dark Energy Survey: Constraints on Cosmological Parameters
    Abbott, T. M. C.
    Allam, S.
    Andersen, P.
    Angus, C.
    Asorey, J.
    Avelino, A.
    Avila, S.
    Bassett, B. A.
    Bechtol, K.
    Bernstein, G. M.
    Bertin, E.
    Brooks, D.
    Brout, D.
    Brown, P.
    Burke, D. L.
    Calcino, J.
    Carnero Rosell, A.
    Carollo, D.
    Kind, M. Carrasco
    Carretero, J.
    Casas, R.
    Castander, F. J.
    Cawthon, R.
    Challis, P.
    Childress, M.
    Clocchiatti, A.
    Cunha, C. E.
    D'Andrea, C. B.
    da Costa, L. N.
    Davis, C.
    Davis, T. M.
    De Vicente, J.
    DePoy, D. L.
    Desai, S.
    Diehl, H. T.
    Doel, P.
    Drlica-Wagner, A.
    Eifler, T. F.
    Evrard, A. E.
    Fernandez, E.
    Filippenko, A., V
    Finley, D. A.
    Flaugher, B.
    Foley, R. J.
    Fosalba, P.
    Frieman, J.
    Galbany, L.
    Garcia-Bellido, J.
    Gaztanaga, E.
    Giannantonio, T.
    [J]. ASTROPHYSICAL JOURNAL LETTERS, 2019, 872 (02)
  • [5] Dark Energy Survey year 1 results: Cosmological constraints from galaxy clustering and weak lensing
    Abbott, T. M. C.
    Abdalla, F. B.
    Alarcon, A.
    Aleksic, J.
    Allam, S.
    Allen, S.
    Amara, A.
    Annis, J.
    Asorey, J.
    Avila, S.
    Bacon, D.
    Balbinot, E.
    Banerji, M.
    Banik, N.
    Barkhouse, W.
    Baumer, M.
    Baxter, E.
    Bechtol, K.
    Becker, M. R.
    Benoit-Levy, A.
    Benson, B. A.
    Bernstein, G. M.
    Bertin, E.
    Blazek, J.
    Bridle, S. L.
    Brooks, D.
    Brout, D.
    Buckley-Geer, E.
    Burke, D. L.
    Busha, M. T.
    Campos, A.
    Capozzi, D.
    Rosell, A. Carnero
    Kind, M. Carrasco
    Carretero, J.
    Castander, F. J.
    Cawthon, R.
    Chang, C.
    Chen, N.
    Childress, M.
    Choi, A.
    Conselice, C.
    Crittenden, R.
    Crocce, M.
    Cunha, C. E.
    D'Andrea, C. B.
    da Costa, L. N.
    Das, R.
    Davis, T. M.
    Davis, C.
    [J]. PHYSICAL REVIEW D, 2018, 98 (04)
  • [6] Aganim N, 2020, ASTRON ASTROPHYS, V641
  • [7] Aiola S., 2020, ARXIV200707288
  • [8] Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Cosmological implications from two decades of spectroscopic surveys at the Apache Point Observatory
    Alam, Shadab
    Aubert, Marie
    Avila, Santiago
    Balland, Christophe
    Bautista, Julian E.
    Bershady, Matthew A.
    Bizyaev, Dmitry
    Blanton, Michael R.
    Bolton, Adam S.
    Bovy, Jo
    Brinkmann, Jonathan
    Brownstein, Joel R.
    Burtin, Etienne
    Chabanier, Solene
    Chapman, Michael J.
    Choi, Peter Doohyun
    Chuang, Chia-Hsun
    Comparat, Johan
    Cousinou, Marie-Claude
    Cuceu, Andrei
    Dawson, Kyle S.
    de la Torre, Sylvain
    de Mattia, Arnaud
    Agathe, Victoria de Sainte
    des Bourboux, Helion du Mas
    Escoffier, Stephanie
    Etourneau, Thomas
    Farr, James
    Font-Ribera, Andreu
    Frinchaboy, Peter M.
    Fromenteau, Sebastien
    Gil-Marin, Hector
    Le Goff, Jean-Marc
    Gonzalez-Morales, Alma X.
    Gonzalez-Perez, Violeta
    Grabowski, Kathleen
    Guy, Julien
    Hawken, Adam J.
    Hou, Jiamin
    Kong, Hui
    Parker, James, III
    Klaene, Mark
    Kneib, Jean-Paul
    Lin, Sicheng
    Long, Daniel
    Lyke, Brad W.
    de la Macorra, Axel
    Martini, Paul
    Masters, Karen
    Mohammad, Faizan G.
    [J]. PHYSICAL REVIEW D, 2021, 103 (08)
  • [9] Arroja F, 2018, ARXIV180706205
  • [10] Asgari M, 2020, ARXIV200715633
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