REVIEW
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.
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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
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.
The abstract, sentence by sentence
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
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| 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 was examined, and what was not
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References
How later papers used it
253 later papers cite it
4 later papers by other authors are listed below: 2 used its method or tool, 1 used its data or values and 1 compared its own results with it.
Uses its method or tool 2 of 3 papers with this label
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Used this paper's approximation to solve the equations analytically.
Incompatibility of Rotation Curves with Gravitational Lensing for TeVeS (2009) · 0.92 · paraphrased: the licence does not allow quoting
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Referred to Appendix C of this paper for a method to obtain the determinant of the disformal metric.
Disformal Scalar Fields and the Dark Sector of the Universe (2010) · 0.88 · paraphrased: the licence does not allow quoting
Uses its data or values 1 of 3 papers with this label
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Took this paper's phenomenological value k of about 0.03.
The LTP Experiment on LISA Pathfinder: Operational Definition of TT Gauge in Space (2011) · 0.94 · paraphrased: the licence does not allow quoting
Compares with it 1 of 8 papers with this label
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Compared its own interpolating function, fixed via a relation in its numerical calculations, with the mu-function definition in this paper.
Data Analysis Methods for Testing Alternative Theories of Gravity with LISA Pathfinder (2014) · 0.86 · paraphrased: the licence does not allow quoting
How the literature uses it
177 arXiv papers cite this in 262 sentences
Papers citing it · 123 sentences without a confident label
Contests it 3 papers
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In its original formulation [ref] , TeVeS suffers from several theoretical and experimental difficulties [ref] , notably a serious instability [ref] .
Nonlocal metric formulations of MOND with sufficient lensing · Introduction · contest 0.77
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Possible relativistic generalizations of MOND [ref] seem to be disfavored by LIGO/Virgo observations [ref] and are yet unsuccessful at explaining the structure of the Universe on large scales [ref] .
Two-body problem in theories with kinetic screening · Introduction · contest 0.83
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Even the so far most elaborate theory of mond, known as Tensor-Vector-Scalar gravity [ref] has yet to explain the observations of dm made in the bullet cluster.
The impact of non-perturbative effects in dark matter production and detection · Characteristics and possible candidates · contest 0.78
Uses its method or tool 3 papers
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In order solve the equations analytically, we have used the following approximation [ref] : e^2ϕ ≃e^2ϕ_c[1-kGm_s(<r)/2πr +k^2G^2m_s^2(<r)/8π^2r^2+O(r^-3)] .
Incompatibility of Rotation Curves with Gravitational Lensing for TeVeS · The TeVeS Model · 0.92
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In order to solve the equations numerically, the following approximation [ref] is used [ref] :
Confronting MOND and TeVeS with strong gravitational lensing over galactic scales: an extended survey · Theory of MOND and TeVeS · 1.00
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The determinant of the disformal metric is (for a method to obtain the result see Appendix C of Ref. [ref] ) √(-g̅) = A^2√(1+2B/AX)√(-g) .
Disformal Scalar Fields and the Dark Sector of the Universe · A variation of the model · 0.88
Uses its data or values 2 papers
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The values of $K$ and $k$ are constrained [ref] from solar system tests on gravity to be $≲0.1$, and by rotation curves to be $≳0.001$.
Confronting MOND and TeVeS with strong gravitational lensing over galactic scales: an extended survey · Deflection Angle · 0.88
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We see the correction falls off as $1/r^2$ moving away from the SP and by taking the phenomenological value $k≃0.03$ [ref] in the nearby of the bubble is amounts to order $0.25%$.
The LTP Experiment on LISA Pathfinder: Operational Definition of TT Gauge in Space · MOND · 0.94
Compares with it 5 papers
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Unlike in TeVeS [ref] , there is no need in the present theory to invoke a disformal coupling of the photon field to gravity in order to get the light deflection viable.
Modified gravity approach based on a preferred time foliation · Non-relativistic limit · 0.88
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While in eq.([ref]) holds, the corresponding equation in MOND according to [ref] is
A Modified Mass Concept could explain both the Dark Matter and the Dark Energy Phenomenon · vs. MOND · 1.00
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This is a clear advantage of the GVT theory over the Bekenstein's Tensor-Vector-Scaler theory [ref] .
GravitoMagnetic Force in Modified Newtonian Dynamics · Conclusion and outlook · 0.95
Cites it as support 2 papers
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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
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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
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We consider the Tensor-Vector-Scalar theory of gravity [ref] (TeVeS) as an alternative to GR.
Can TeVeS be a viable theory of gravity? · Introduction · 0.98
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TeVeS [ref] is a bi-metric model in which matter and radiation do not feel the Einstein metric, $g_αβ$, that appears in the canonical kinetic term of the (effective) action, but a modified “physical” metric, $g̃_αβ$, related to the Einstein metric by g̃_αβ = e^-2ϕg_αβ-U_αU_β(e^2ϕ-e^-2ϕ) , where $U_μ, ϕ$ denote the TeVeS vector and scalar field, respectively.
Incompatibility of Rotation Curves with Gravitational Lensing for TeVeS · The TeVeS Model · 0.97
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A generally covariant realization of the AQUAL model is the TeVeS theory [ref] .
GravitoMagnetic Field in Tensor-Vector-Scalar Theory · Introduction · 0.96
Discussion
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