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Experimental search for a Lorentz invariant spacetime granularity: Possibilities and bounds
General Relativity and Quantum Cosmology · Submitted 18 Oct 2012
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We present the specific phenomenological model in detail and analyze the bounds on its free parameters established by a experiment specifically designed to test this model.
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The abstract, sentence by sentence
We consider a search for phenomenological signatures from an hypothetical space-time granularity that respects Lorentz invariance. The model is based on the idea that the metric description of Einstein's gravity corresponds to a hydrodynamic characterization of some deeper underlying structure, and that Einstein's gravity is thus to be seen as emergent. We present the specific phenomenological model in detail and analyze the bounds on its free parameters established by a experiment specifically designed to test this model.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We consider a search for phenomenological signatures from an hypothetical space-time granularity that respects Lorentz invariance. | contribution 0.64 | 0.45 | 0.06 | asserted 0.28 |
| s1 | The model is based on the idea that the metric description of Einstein's gravity corresponds to a hydrodynamic characterization of some deeper underlying structure, and that Einstein's gravity is thus to be seen as emergent. | background 0.50 | 0.12 | 0.05 | asserted 0.81 |
| s2 | We present the specific phenomenological model in detail and analyze the bounds on its free parameters established by a experiment specifically designed to test this model. | contribution 0.99 | 0.90 | 0.23 | asserted 0.98 |
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The paper
Original abstract
We consider a search for phenomenological signatures from an hypothetical space-time granularity that respects Lorentz invariance. The model is based on the idea that the metric description of Einstein's gravity corresponds to a hydrodynamic characterization of some deeper underlying structure, and that Einstein's gravity is thus to be seen as emergent. We present the specific phenomenological model in detail and analyze the bounds on its free parameters established by a experiment specifically designed to test this model.
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How the literature uses it
What this paper does with the arXiv papers it cites
What it cites · 17 sentences without a confident label
Uses the method or tool of 1 paper
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The Eöt-Wash group had developed an experimental technique consisting of a continuously rotating torsion balance which involves approximately $10^23$ horizontally polarized electrons possessing negligible magnetic moment [ref] .
New CP-violation and preferred-frame tests with polarized electrons · Phenomenology with the proposed interaction · 0.92
Compares with 1 paper
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Observe that the Lagrangian terms ([ref]) resemble the $H_ab$ coupling in the Standard-Model Extension (SME) [ref] (that is the reason why we denoted our object by $H̃_̃ãb̃$).
Gravity, Lorentz Violation, and the Standard Model · The model · 0.84
Cites as support 4 papers
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Although it is not evident at first sight, this is the most general field $H̃_ab$ that can be built respecting the restrictions discussed above [ref] because the terms involving two “tilded” eigenforms are equivalent to terms already contained in equation ([ref]).
Unambiguous Quantum Gravity Phenomenology Respecting Lorentz Symmetry · The model · 0.96
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This point of view seems to be further supported by the analogy between the behavior of black holes and the laws of thermodynamics [ref] , and by the ideas developed in Ref. [ref] (see also Refs. [ref] ).
Gravity and the Thermodynamics of Horizons · Introduction · 0.99
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This point of view seems to be further supported by the analogy between the behavior of black holes and the laws of thermodynamics [ref] , and by the ideas developed in Ref. [ref] (see also Refs. [ref] ).
Can Spacetime be a Condensate? · Introduction · 0.99
Cites as background 12 papers
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There had been, in fact, an ongoing research project devoted to precision tests of fundamental symmetries, such as Lorentz Invariance and CPT [ref] , but an important surge in interest came to the field due to the observation that what seemed as the natural estimates of the strength of the Lorentz Violating effects resulting from a Planck scale granularity were within the experimentally accessible region, in the case of gamma ray bursts with origin at cosmic distances [ref] .
Potential Sensitivity of Gamma-Ray Burster Observations to Wave Dispersion in Vacuo · Introduction · 0.84
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At the same time, colleagues working on various approaches to quantum gravity produced schemes were such effects would emerge “naturally" (see [ref] for proposals based on Loop Quantum Gravity and [ref] for proposals inspired on String Theory).
Nonstandard optics from quantum spacetime · Introduction · 0.93
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At the same time, colleagues working on various approaches to quantum gravity produced schemes were such effects would emerge “naturally" (see [ref] for proposals based on Loop Quantum Gravity and [ref] for proposals inspired on String Theory).
Quantum-Gravitational Diffusion and Stochastic Fluctuations in the Velocity of Light · Introduction · 0.93
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