RECORD
Cosmology of a Lorentz violating Galileon theory
General Relativity and Quantum Cosmology · Submitted 5 Jan 2015
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim In particular, for pressure-less baryonic matter, we show that the universe experiences a late time acceleration.
The compiled record
The paper's own sentences, arranged. 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.
Open the compiled record
The abstract, sentence by sentence
We modify the scalar Einstein-aether theory by breaking the Lorentz invariance of a gravitational theory coupled to a Galileon type scalar field. This is done by introducing a Lagrange multiplier term into the action, thus ensuring that the gradient of the scalar field is time-like, with unit norm. The theory can also be considered as an extension to the mimetic dark matter theory, by adding some derivative self interactions to the action, which keeps the equation of motion at most second order in time derivatives. The cosmological implications of the model are discussed in detail. In particular, for pressure-less baryonic matter, we show that the universe experiences a late time acceleration. The cosmological implications of a special coupling between the scalar field and the trace of the energy-momentum tensor are also explored.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We modify the scalar Einstein-aether theory by breaking the Lorentz invariance of a gravitational theory coupled to a Galileon type scalar field. | contribution 0.99 | 0.91 | 0.06 | asserted 1.00 |
| s1 | This is done by introducing a Lagrange multiplier term into the action, thus ensuring that the gradient of the scalar field is time-like, with unit norm. | method 0.96 | 0.89 | 0.03 | asserted 1.00 |
| s2 | The theory can also be considered as an extension to the mimetic dark matter theory, by adding some derivative self interactions to the action, which keeps the equation of motion at most second order in time derivatives. | contribution 0.49 | 0.60 | 0.05 | hedged possibility 0.52 |
| s3 | The cosmological implications of the model are discussed in detail. | contribution 0.98 | 0.75 | 0.05 | asserted 0.84 |
| s4 | In particular, for pressure-less baryonic matter, we show that the universe experiences a late time acceleration. | result 1.00 | 0.94 | 0.51 | asserted 1.00 |
| s5 | The cosmological implications of a special coupling between the scalar field and the trace of the energy-momentum tensor are also explored. | contribution 0.99 | 0.86 | 0.06 | asserted 0.70 |
What was examined, and what was not
- arXiv listing abstract v2
- full text
- figures and tables
- references and citing sentences
- relations to other papers
- P abstract
- S sections
- T body sentences
- C citations
- R cross-paper relations
The paper
Original abstract
We modify the scalar Einstein-aether theory by breaking the Lorentz invariance of a gravitational theory coupled to a Galileon type scalar field. This is done by introducing a Lagrange multiplier term into the action, thus ensuring that the gradient of the scalar field is time-like, with unit norm. The theory can also be considered as an extension to the mimetic dark matter theory, by adding some derivative self interactions to the action, which keeps the equation of motion at most second order in time derivatives. The cosmological implications of the model are discussed in detail. In particular, for pressure-less baryonic matter, we show that the universe experiences a late time acceleration. The cosmological implications of a special coupling between the scalar field and the trace of the energy-momentum tensor are also explored.
Human review
References
How the literature uses it
14 arXiv papers cite this in 16 sentences
Papers citing it · 7 sentences without a confident label
Cites it as background 9 papers
-
Numerous works have investigated in detail the cosmological phenomenology of the above constructions, such as inflation, late-time acceleration, and unified universe evolution including the intermediate radiation and matter eras [ref] .
Cosmological dynamics of mimetic gravity · Introduction · 0.94
-
The study of Lagrange multiplier-constrained theories, which represent the prototype for mimetic theories, had been initiated earlier in [ref] .[See also [ref] for recent work on the role of Lagrange multipliers in cosmology.] Various aspects of mimetic gravity (including ghost and stability issues, null-energy condition violation, connections to other theories such as Hořava-Lifshitz gravity and the scalar Einstein-aether theory, and various solutions such as static spherically symmetric, cylindrical, stellar ones) and extensions thereof have been discussed at length in the quickly growing literature related to the subject [ref] , to which we refer the reader for further details.
Recovering a MOND-like acceleration law in mimetic gravity · Mimetic gravity · 0.99
-
There are many applications in the framework of mimetic in cosmology as well as in solar system [ref] .
Isotropic stellar model in mimetic theory · Introduction · 0.99
What it cites · 25 sentences without a confident label
Compares with 2 papers
-
We have also introduced the terms $ℒ_i$, $i=1,2,3$, defined as [ref] [equation] The action [ref] is similar to the action for mimetic dark matter with derivative interaction terms for a scalar field [ref] .
Covariant Galileon · Generalized scalar Einstein-aether theory · 0.83
-
We have also introduced the terms $ℒ_i$, $i=1,2,3$, defined as [ref] [equation] The action [ref] is similar to the action for mimetic dark matter with derivative interaction terms for a scalar field [ref] .
Cosmology with Mimetic Matter · Generalized scalar Einstein-aether theory · 0.83
Cites as background 4 papers
-
These interactions are known as Galileon terms [ref] .
The galileon as a local modification of gravity · Discussion and final remarks · 0.82
-
The Galileons were originally written in flat Minkowski space [ref] where they have an additional symmetry [equation] which is lost in the covariant version [ref] [The most general theory of two graviton degrees of freedom (dof) plus a scalar dof writing in terms of curvature invariants and the covariant derivatives of the scalar field was first introduced by Horndeski in [ref] , and independently rediscovered in [ref] .
Covariant Galileon · Introduction · 0.98
-
The Galileons were originally written in flat Minkowski space [ref] where they have an additional symmetry [equation] which is lost in the covariant version [ref] [The most general theory of two graviton degrees of freedom (dof) plus a scalar dof writing in terms of curvature invariants and the covariant derivatives of the scalar field was first introduced by Horndeski in [ref] , and independently rediscovered in [ref] .
From k-essence to generalised Galileons · Introduction · 0.98
Discussion
Know something about this paper? Leave a comment, or highlight any passage above to comment on it.