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Disentangling Forms of Lorentz Violation With Complementary Clock Comparison Experiments

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Paper breakdownThe authors' claims, conditions and measurements, as JSON Signed receiptProof this review has not been altered
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Brett Altschul

High Energy Physics - Phenomenology · Submitted 13 Jan 2009

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim The disentangled bounds in the neutron sectors are at the 10^(-28) GeV level, far better than could be obtained with any other current technique.

how it is stated · asserted 1.00 read the record →

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arXiv ID0901.1870 (version 2)
Pith IDUC43MKJS, Pith's permanent record of this paper and its review
CitationBrett Altschul. "Disentangling Forms of Lorentz Violation With Complementary Clock Comparison Experiments." arXiv:0901.1870 (2009). https://pith.science/paper/UC43MKJS
Claim paper

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

Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 3,591 input tokens, $0.0002 reported.

What the abstract itself states, as probabilities: claims first 0.07 · states limitation 0.08 · human participants 0.02 · controlled comparison 0.06 · randomized assignment 0.01 · states quantitative result 0.97 · compares with prior results 0.88 · mentions code or data availability 0.02.

The abstract, sentence by sentence

arXiv listing abstract v2. Results and the main claim are underlined; .

Atomic clock comparisons provide some of the most precise tests of Lorentz and CPT symmetries in the laboratory. With data from multiple such experiments using different nuclei, it is possible to constrain new regions of the parameter space for Lorentz violation. Relativistic effects in the nuclei allow us to disentangle forms of Lorentz violation which could not be separately measured in purely nonrelativistic experiments. The disentangled bounds in the neutron sectors are at the 10^(-28) GeV level, far better than could be obtained with any other current technique.

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 Atomic clock comparisons provide some of the most precise tests of Lorentz and CPT symmetries in the laboratory. background 1.00 0.08 0.04 asserted 0.82
s1 With data from multiple such experiments using different nuclei, it is possible to constrain new regions of the parameter space for Lorentz violation. method 0.66 0.25 0.11 hedged possibility 0.84
s2 Relativistic effects in the nuclei allow us to disentangle forms of Lorentz violation which could not be separately measured in purely nonrelativistic experiments. method 0.47 0.44 0.32 asserted 0.81
s3 The disentangled bounds in the neutron sectors are at the 10^(-28) GeV level, far better than could be obtained with any other current technique. result 1.00 0.80 0.71 asserted 1.00

What kind of paper the classifier reports this is: empirical study 0.58 · evidence from analysis of existing data 0.91.

What was examined, and what was not

sources read
  • arXiv listing abstract v2
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

The paper
Original abstract

Atomic clock comparisons provide some of the most precise tests of Lorentz and CPT symmetries in the laboratory. With data from multiple such experiments using different nuclei, it is possible to constrain new regions of the parameter space for Lorentz violation. Relativistic effects in the nuclei allow us to disentangle forms of Lorentz violation which could not be separately measured in purely nonrelativistic experiments. The disentangled bounds in the neutron sectors are at the 10^(-28) GeV level, far better than could be obtained with any other current technique.

Human review

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What this paper does with the arXiv papers it cites

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

What it cites · 1 sentence without a confident label

Cites as background 1 paper
  • (The full set of combinations, which are expressed in sun-centered coordinates, is given in [ref] .

    0801.0287 · Introduction · 0.90

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