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Duerr PM, Wolf WJ. Methodological reflections on the MOND/dark matter debate. STUDIES IN HISTORY AND PHILOSOPHY OF SCIENCE 2023; 101:1-23. [PMID: 37531699 DOI: 10.1016/j.shpsa.2023.07.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 06/28/2023] [Accepted: 07/07/2023] [Indexed: 08/04/2023]
Abstract
The paper re-examines the principal methodological questions, arising in the debate over the cosmological standard model's postulate of Dark Matter vs. rivalling proposals that modify standard (Newtonian and general-relativistic) gravitational theory, the so-called Modified Newtonian Dynamics (MOND) and its subsequent extensions. What to make of such seemingly radical challenges of cosmological orthodoxy? In the first part of our paper, we assess MONDian theories through the lens of key ideas of major 20th century philosophers of science (Popper, Kuhn, Lakatos, and Laudan), thereby rectifying widespread misconceptions and misapplications of these ideas common in the pertinent MOND-related literature. None of these classical methodological frameworks, which render precise and systematise the more intuitive judgements prevalent in the scientific community, yields a favourable verdict on MOND and its successors-contrary to claims in the MOND-related literature by some of these theories' advocates; the respective theory appraisals are largely damning. Drawing on these insights, the paper's second part zooms in on the most common complaint about MONDian theories, their ad-hocness. We demonstrate how the recent coherentist model of ad-hocness captures, and fleshes out, the underlying-but too often insufficiently articulated-hunches underlying this critique. MONDian theories indeed come out as severely ad hoc: they do not cohere well with either theoretical or empirical-factual background knowledge. In fact, as our complementary comparison with the cosmological standard model's Dark Matter postulate shows, with respect to ad-hocness, MONDian theories fare worse than the cosmological standard model.
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Affiliation(s)
- Patrick M Duerr
- Martin Buber Society of Fellows for Research in the Humanities and Social Sciences, Hebrew University of Jerusalem, Israel; Faculty of Philosophy, University of Oxford, UK.
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Abstract
This is a review of the physics and cosmology of the cosmological constant. Focusing on recent developments, I present a pedagogical overview of cosmology in the presence of a cosmological constant, observational constraints on its magnitude, and the physics of a small (and potentially nonzero) vacuum energy.
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Affiliation(s)
- Sean M. Carroll
- Theoretical Physics and Astrophysics Physics Department, California Institute of Technology, 452-48 1200, E. California Blvd., Pasadena, CA 91125 USA
- Enrico Fermi Institute and Department of Physics, University of Chicago, 5640, S. Ellis Ave., Chicago, IL 60637 USA
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Hannestad S. New constraints on neutrino physics from BOOMERANG data. PHYSICAL REVIEW LETTERS 2000; 85:4203-4206. [PMID: 11060599 DOI: 10.1103/physrevlett.85.4203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2000] [Indexed: 05/23/2023]
Abstract
We have performed a likelihood analysis of the recent data on the cosmic microwave background radiation anisotropy from the BOOMERANG experiment. These data place a strong upper bound on the radiation density present at recombination. Expressed in terms of the equivalent number of neutrino species the 2sigma bound is N(nu)</=13. This bound is not flavor sensitive. It also applies to the Universe at a much later epoch, and as such places severe limits on scenarios with decaying neutrinos. The bound also yields a firm upper limit on the lepton asymmetry in the Universe.
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Affiliation(s)
- S Hannestad
- NORDITA, Blegdamsvej 17, DK-2100 Copenhagen, Denmark
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Melchiorri A, Ade PA, Bock JJ, Borrill J, Boscaleri A, Crill BP, Farese P, Ferreira PG, Ganga K, Giacometti M, Hristov VV, Jaffe AH, Lange AE, Masi S, Mauskopf PD, Miglio L, Netterfield CB, Pascale E, Piacentini F, Romeo G, Ruhl JE, Vittorio N. A Measurement of Omega from the North American Test Flight of Boomerang. THE ASTROPHYSICAL JOURNAL 2000; 536:L63-L66. [PMID: 10859119 DOI: 10.1086/312744] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/1999] [Accepted: 05/04/2000] [Indexed: 05/23/2023]
Abstract
We use the angular power spectrum of the cosmic microwave background, measured during the North American test flight of the Boomerang experiment, to constrain the geometry of the universe. Within the class of cold dark matter models, we find that the overall fractional energy density of the universe Omega is constrained to be 0.85</=Omega</=1.25 at the 68% confidence level. Combined with the COBE measurement, the data on degree scales from the Microwave Anisotropy Telescope in Chile, and the high-redshift supernovae data, we obtain new constraints on the fractional matter density and the cosmological constant.
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Bunn EF, Liddle AR, White M. Four-year COBE normalization of inflationary cosmologies. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1996; 54:R5917-R5921. [PMID: 10020664 DOI: 10.1103/physrevd.54.r5917] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Jungman G, Kamionkowski M, Kosowsky A, Spergel DN. Cosmological-parameter determination with microwave background maps. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1996; 54:1332-1344. [PMID: 10020810 DOI: 10.1103/physrevd.54.1332] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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White M. Cosmic confusion and structure formation. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1996; 53:3011-3016. [PMID: 10020298 DOI: 10.1103/physrevd.53.3011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Jungman G, Kamionkowski M, Kosowsky A, Spergel DN. Weighing the universe with the cosmic microwave background. PHYSICAL REVIEW LETTERS 1996; 76:1007-1010. [PMID: 10061610 DOI: 10.1103/physrevlett.76.1007] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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García-Bellido J, Wands D. Constraints from inflation on scalar-tensor gravity theories. Int J Clin Exp Med 1995; 52:6739-6749. [PMID: 10019215 DOI: 10.1103/physrevd.52.6739] [Citation(s) in RCA: 105] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Hu W, Scott D, Sugiyama N, White M. Effect of physical assumptions on the calculation of microwave background anisotropies. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1995; 52:5498-5515. [PMID: 10019080 DOI: 10.1103/physrevd.52.5498] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Crittenden RG, Coulson D, Turok NG. Temperature-polarization correlations from tensor fluctuations. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1995; 52:R5402-R5406. [PMID: 10019157 DOI: 10.1103/physrevd.52.r5402] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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13
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Knox L. Determination of inflationary observables by cosmic microwave background anisotropy experiments. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1995; 52:4307-4318. [PMID: 10019658 DOI: 10.1103/physrevd.52.4307] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Ostriker JP, Steinhardt PJ. The observational case for a low-density Universe with a non-zero cosmological constant. Nature 1995. [DOI: 10.1038/377600a0] [Citation(s) in RCA: 508] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Zaldarriaga M, Harari DD. Analytic approach to the polarization of the cosmic microwave background in flat and open universes. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1995; 52:3276-3287. [PMID: 10019554 DOI: 10.1103/physrevd.52.3276] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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TEGMARK MAX. Estimating Microwave Power Spectra. Ann N Y Acad Sci 1995. [DOI: 10.1111/j.1749-6632.1995.tb17635.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Dodelson S, Kosowsky A. Analysis of small- and medium-scale cosmic microwave background measurements. PHYSICAL REVIEW LETTERS 1995; 75:604-607. [PMID: 10060069 DOI: 10.1103/physrevlett.75.604] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Bond JR. Signal-to-noise eigenmode analysis of the two-year COBE maps. PHYSICAL REVIEW LETTERS 1995; 74:4369-4372. [PMID: 10058489 DOI: 10.1103/physrevlett.74.4369] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Abstract
Fluctuations in the temperature of the cosmic microwave background have now been detected over a wide range of angular scales, and a consistent picture seems to be emerging. This article describes some of the implications for cosmology. Analysis of all of the published detections suggests the existence of a peak on degree scales with a height 2.4 to 10 (90 percent confidence level) times the amplitude of the power spectrum at large angular scales. This result confirms an early prediction, implies that the universe did in fact recombine, and limits theories of structure formation. Illustrative examples show how comparison of the microwave background data and the large-scale structure data will be a potentially powerful means of answering fundamental questions about the universe.
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Hogan CJ. Cosmic fluctuations and dark matter from scalar field oscillations. PHYSICAL REVIEW LETTERS 1995; 74:3105-3108. [PMID: 10058113 DOI: 10.1103/physrevlett.74.3105] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Pen UL, Spergel DN. Cosmic microwave anisotropies from topological defects in an open universe. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1995; 51:4099-4110. [PMID: 10018884 DOI: 10.1103/physrevd.51.4099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Hu W, Sugiyama N. Toward understanding CMB anisotropies and their implications. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1995; 51:2599-2630. [PMID: 10018735 DOI: 10.1103/physrevd.51.2599] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Knox L, Turner MS. Detectability of tensor perturbations through anisotropy of the cosmic background radiation. PHYSICAL REVIEW LETTERS 1994; 73:3347-3350. [PMID: 10057358 DOI: 10.1103/physrevlett.73.3347] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Grishchuk LP. Density perturbations of quantum-mechanical origin and anisotropy of the microwave background. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1994; 50:7154-7172. [PMID: 10017698 DOI: 10.1103/physrevd.50.7154] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Coulson D, Crittenden RG, Turok NG. Polarization and anisotropy of the microwave sky. PHYSICAL REVIEW LETTERS 1994; 73:2390-2393. [PMID: 10057047 DOI: 10.1103/physrevlett.73.2390] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Peter P, Polarski D, Starobinsky AA. Comparison of double-inflationary models with observations. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1994; 50:4827-4834. [PMID: 10018133 DOI: 10.1103/physrevd.50.4827] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Allen B, Koranda S. CBR anisotropy from primordial gravitational waves in inflationary cosmologies. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1994; 50:3713-3737. [PMID: 10018015 DOI: 10.1103/physrevd.50.3713] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Kolb EW, Vadas SL. Relating spectral indices to tensor and scalar amplitudes in inflation. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1994; 50:2479-2487. [PMID: 10017881 DOI: 10.1103/physrevd.50.2479] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Dodelson S, Knox L, Kolb EW. Testing inflation with the cosmic microwave background. PHYSICAL REVIEW LETTERS 1994; 72:3444-3447. [PMID: 10056201 DOI: 10.1103/physrevlett.72.3444] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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