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Relativistic gravitation theory for the MOND paradigm

Astrophysics · Submitted 30 Mar 2004 · 67 references

Pith's verdict: TeVeS is the paper that made relativistic MOND viable, but the MOND limit rests on a hand-chosen free function, and Eqs. 36/50/51 do not close as printed.

T0 · AI review

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arXiv IDastro-ph/0403694 (version 6)
Pith IDPI7X33OZ, Pith's permanent record of this paper and its review
CitationJacob D. Bekenstein. "Relativistic gravitation theory for the MOND paradigm." arXiv:astro-ph/0403694 (2004). https://pith.science/paper/PI7X33OZ
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Referee report
The paper

The paper claims

A relativistic gravity theory with tensor, vector and scalar fields reproduces MOND at low acceleration, yields the observed gravitational lensing without dark matter, and gives post-Newtonian parameters beta = gamma = 1.

The reading

MOND is a rule that says gravity departs from Newton's law when accelerations fall below a fixed tiny value, about one ten-billionth of a centimetre per second squared. It explains flat galaxy rotation curves without dark matter, but for two decades it was only a formula for accelerations, not a full theory: it could not say how light bends, and its first relativistic versions either predicted too little lensing or allowed signals to travel faster than light. Bekenstein's paper supplies the missing theory. Gravity is carried by three dynamical fields: the usual spacetime metric, a scalar field, and a 4-vector field that picks out a preferred time direction locally but is itself dynamical, not imposed by hand. The physical metric that matter and light actually feel is built from all three by a rule that stretches spacetime differently along and perpendicular to the vector. The scalar field's equation is engineered, through a freely chosen function, to reduce to the MOND rule at low acceleration and to Newtonian gravity at high acceleration. The paper then computes the standard post-Newtonian parameters and finds both equal to unity, matching general relativity and the solar-system measurements. It shows that the same potential that governs how stars move also governs how light bends, so a galaxy that MOND describes dynamically will lens light by the observed amount. Finally it examines flat cosmological models and finds the scalar field stays small and positive, which is what keeps all three kinds of waves from travelling faster than light.
Extended reading notes

Core claim

TeVeS, a theory with a metric, a dynamical scalar and a dynamical 4-vector, has a nonrelativistic limit that reproduces the MOND formula at low acceleration and Newtonian gravity at high acceleration, yields post-Newtonian parameters beta = gamma = 1 in agreement with solar-system tests, and predicts gravitational lensing by nonrelativistic systems governed by the same potential that governs particle dynamics, so that lensing agrees with observation to the same extent that MOND describes the dynamics (abstract s3, s6, s7; Sec. V Eqs. 97-98; Sec. VI Eq. 109).

Load-bearing premise

The entire MOND limit rests on the hand-chosen free function y(mu) in Eq. 50, picked so that mu approaches 1 at large argument (Newtonian limit) and mu is approximately sqrt(y/3) at small argument (MOND limit). Nothing derives this function; Sec. III E states there is no theory for F or y and that the choice is made 'as an example.' The MOND function in Eq. 64 and the identification of a0 in Eq. 62 follow from that choice, so a different F would give a different low-acceleration phenomenology while leaving the rest of the formalism intact.

Original abstract

The modified newtonian dynamics (MOND) paradigm of Milgrom can boast of a number of successful predictions regarding galactic dynamics; these are made without the assumption that dark matter plays a significant role. MOND requires gravitation to depart from Newtonian theory in the extragalactic regime where dynamical accelerations are small. So far relativistic gravitation theories proposed to underpin MOND have either clashed with the post-Newtonian tests of general relativity, or failed to provide significant gravitational lensing, or violated hallowed principles by exhibiting superluminal scalar waves or an \textit{a priori} vector field. We develop a relativistic MOND inspired theory which resolves these problems. In it gravitation is mediated by metric, a scalar field and a 4-vector field, all three dynamical. For a simple choice of its free function, the theory has a Newtonian limit for nonrelativistic dynamics with significant acceleration, but a MOND limit when accelerations are small. We calculate the $\beta$ and $\gamma$ PPN coefficients showing them to agree with solar system measurements. The gravitational light deflection by nonrelativistic systems is governed by the same potential responsible for dynamics of particles. To the extent that MOND successfully describes dynamics of a system, the new theory's predictions for lensing by that system's visible matter will agree as well with observations as general relativity's predictions made with a dynamically successful dark halo model. Cosmological models based on the theory are quite similar to those based on general relativity; they predict slow evolution of the scalar field. For a range of initial conditions, this last result makes it easy to rule out superluminal propagation of metric, scalar and vector waves.

The compiled record

The paper's own sentences, arranged, kept beside the review and separate from it. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.

Compiled by classifier-1.13.0 via TypeSafe API, question bank abstract-p1-20260923, 2026-09-23: 1 request, 8,367 input tokens.

What the abstract itself states, as probabilities: claims first 0.08 · states limitation 0.36 · human participants 0.01 · controlled comparison 0.18 · randomized assignment 0.01 · states quantitative result 0.11 · compares with prior results 0.94 · mentions code or data availability 0.01.

The abstract, sentence by sentence

arXiv listing abstract v6. Results and the main claim are underlined; .

The modified newtonian dynamics (MOND) paradigm of Milgrom can boast of a number of successful predictions regarding galactic dynamics; these are made without the assumption that dark matter plays a significant role. MOND requires gravitation to depart from Newtonian theory in the extragalactic regime where dynamical accelerations are small. So far relativistic gravitation theories proposed to underpin MOND have either clashed with the post-Newtonian tests of general relativity, or failed to provide significant gravitational lensing, or violated hallowed principles by exhibiting superluminal scalar waves or an \textit{a priori} vector field. We develop a relativistic MOND inspired theory which resolves these problems. In it gravitation is mediated by metric, a scalar field and a 4-vector field, all three dynamical. For a simple choice of its free function, the theory has a Newtonian limit for nonrelativistic dynamics with significant acceleration, but a MOND limit when accelerations are small. We calculate the $\beta$ and $\gamma$ PPN coefficients showing them to agree with solar system measurements. The gravitational light deflection by nonrelativistic systems is governed by the same potential responsible for dynamics of particles. To the extent that MOND successfully describes dynamics of a system, the new theory's predictions for lensing by that system's visible matter will agree as well with observations as general relativity's predictions made with a dynamically successful dark halo model. Cosmological models based on the theory are quite similar to those based on general relativity; they predict slow evolution of the scalar field. For a range of initial conditions, this last result makes it easy to rule out superluminal propagation of metric, scalar and vector waves.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#sentencerolethe authors' own workstates the main conclusionstrength
s0 The modified newtonian dynamics (MOND) paradigm of Milgrom can boast of a number of successful predictions regarding galactic dynamics; these are made without the assumption that dark matter plays a significant role. background 1.00 0.04 0.03 asserted 0.99
s1 MOND requires gravitation to depart from Newtonian theory in the extragalactic regime where dynamical accelerations are small. background 1.00 0.05 0.03 asserted 1.00
s2 So far relativistic gravitation theories proposed to underpin MOND have either clashed with the post-Newtonian tests of general relativity, or failed to provide significant gravitational lensing, or violated hallowed principles by exhibiting superluminal scalar waves or an \textit{a priori} vector field. gap 0.59 0.04 0.04 asserted 1.00
s3 We develop a relativistic MOND inspired theory which resolves these problems. contribution 1.00 0.94 0.53 asserted 1.00
s4 In it gravitation is mediated by metric, a scalar field and a 4-vector field, all three dynamical. contribution 0.51 0.78 0.10 asserted 1.00
s5 For a simple choice of its free function, the theory has a Newtonian limit for nonrelativistic dynamics with significant acceleration, but a MOND limit when accelerations are small. contribution 0.51 0.74 0.18 asserted 0.98
s6 We calculate the $\beta$ and $\gamma$ PPN coefficients showing them to agree with solar system measurements. result 0.93 0.96 0.09 asserted 1.00
s7 The gravitational light deflection by nonrelativistic systems is governed by the same potential responsible for dynamics of particles. result 0.98 0.79 0.10 asserted 1.00
s8 To the extent that MOND successfully describes dynamics of a system, the new theory's predictions for lensing by that system's visible matter will agree as well with observations as general relativity's predictions made with a dynamically successful dark halo model. result 0.57 0.54 0.21 asserted 0.72
s9 Cosmological models based on the theory are quite similar to those based on general relativity; they predict slow evolution of the scalar field. result 0.95 0.73 0.06 asserted 0.99
s10 For a range of initial conditions, this last result makes it easy to rule out superluminal propagation of metric, scalar and vector waves. result 0.60 0.78 0.06 asserted 0.79

What kind of paper the classifier reports this is: theoretical result 1.00 · evidence from proof or derivation 1.00.

What was examined, and what was not

sources read
  • arXiv listing abstract v6
not examined
  • full text
  • figures and tables
  • references and citing sentences
  • relations to other papers
levels run
  • P abstract
not run
  • S sections
  • T body sentences
  • C citations
  • R cross-paper relations

Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

References
How later papers used it

253 later papers cite it

Evidence: substantial. 253 of the citing papers share no author with it, and 23 of those carry a confident label from Pith's citation classifier.

Pith read 39 of the 364 citing sentences, choosing only those whose citation markers point at this paper alone, and wrote the paraphrases from them. The summary, the counts, the evidence level, the links and the quotes come from code; the summary counts the papers listed below. A later paper is listed under a label when Pith's citation classifier gives one of its sentences that label at probability 0.8 or more (0.95 for support), Pith's reading finds that the citing paper itself did it, and a second check confirms the paraphrase against the sentence. This section lists uses only. It does not list criticism or disagreement, so their absence here says nothing about how the paper has been received. Papers that share an author with this one are listed apart, under "By the same authors". A quote is the citing authors' own sentence, shown when their paper's licence is CC BY, CC BY-SA or CC0. JSON

Uses its method or tool 2 of 3 papers with this label
Uses its data or values 1 of 3 papers with this label
Compares with it 1 of 8 papers with this label
How the literature uses it

177 arXiv papers cite this in 262 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers citing it · 123 sentences without a confident label

Contests it 3 papers
Uses its method or tool 3 papers
Uses its data or values 2 papers
Compares with it 5 papers
Cites it as support 2 papers
  • Further on, TeVeS has been shown to be free of acausal propagation of perturbations and it is in agreement with solar system tests [ref] .

    Can TeVeS be a viable theory of gravity? · Introduction · 0.98

  • The desiderata and guiding principles that [ref] lists are either directly imported from GR (as in the case of the Covariance Principle and the weak equivalence principle), or generic demands on garden-variety field theories (as in the case of causality constraints).

    Methodological Reflections on the MOND/Dark Matter Debate · Kuhn—Against Facile Invocations of Paradigms · 0.98

Cites it as background 110 papers

Discussion

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