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Spontaneous Scalarization in Scalar-Tensor Theories with Conformal Symmetry as an Attractor

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Takeshi Chiba

General Relativity and Quantum Cosmology · Submitted 23 Apr 2021

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

The authors' main claim This indicates that the constraints obtained by the quadratic model will be used to limit the curvature of the coupling function universally in the future.

how it is stated · hedged possibility 0.96 read the record →

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arXiv ID2104.11362 (version 4)
Pith IDVMG6VKCK, Pith's permanent record of this paper and its review
CitationTakeshi Chiba. "Spontaneous Scalarization in Scalar-Tensor Theories with Conformal Symmetry as an Attractor." arXiv:2104.11362 (2021). https://pith.science/paper/VMG6VKCK
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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.

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Compiled by classifier-1.13.0 via TypeSafe API, question bank abstract-p1-20260923, 2026-09-23: 1 request, 4,313 input tokens.

What the abstract itself states, as probabilities: claims first 0.04 · states limitation 0.26 · human participants 0.01 · controlled comparison 0.28 · randomized assignment 0.01 · states quantitative result 0.11 · compares with prior results 0.94 · mentions code or data availability 0.02.

The abstract, sentence by sentence

arXiv listing abstract v4. Results and the main claim are underlined; .

Motivated by constant-G theory, we introduce a one-parameter family of scalar-tensor theories as an extension of constant-G theory in which the conformal symmetry is a cosmological attractor. Since the model has the coupling function of negative curvature, we expect spontaneous scalarization occurs and the parameter is constrained by pulsar-timing measurements. Modeling neutron stars with realistic equation of states, we study the structure of neutron stars and calculate the effective scalar coupling with the neutron star in these theories. We find that within the parameter region where the observational constraints are satisfied, the effective scalar coupling almost coincides with that derived using the quadratic model with the same curvature. This indicates that the constraints obtained by the quadratic model will be used to limit the curvature of the coupling function universally in the future.

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 Motivated by constant-G theory, we introduce a one-parameter family of scalar-tensor theories as an extension of constant-G theory in which the conformal symmetry is a cosmological attractor. contribution 0.99 0.88 0.07 asserted 0.99
s1 Since the model has the coupling function of negative curvature, we expect spontaneous scalarization occurs and the parameter is constrained by pulsar-timing measurements. interpretation 0.61 0.14 0.09 hedged possibility 0.90
s2 Modeling neutron stars with realistic equation of states, we study the structure of neutron stars and calculate the effective scalar coupling with the neutron star in these theories. method 0.86 0.95 0.04 asserted 0.95
s3 We find that within the parameter region where the observational constraints are satisfied, the effective scalar coupling almost coincides with that derived using the quadratic model with the same curvature. result 1.00 0.96 0.45 asserted 1.00
s4 This indicates that the constraints obtained by the quadratic model will be used to limit the curvature of the coupling function universally in the future. interpretation 0.94 0.36 0.50 hedged possibility 0.96

What kind of paper the classifier reports this is: theoretical result 0.92 · evidence from simulation or computation 0.98.

What was examined, and what was not

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  • figures and tables
  • references and citing sentences
  • relations to other papers
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  • 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

Motivated by constant-G theory, we introduce a one-parameter family of scalar-tensor theories as an extension of constant-G theory in which the conformal symmetry is a cosmological attractor. Since the model has the coupling function of negative curvature, we expect spontaneous scalarization occurs and the parameter is constrained by pulsar-timing measurements. Modeling neutron stars with realistic equation of states, we study the structure of neutron stars and calculate the effective scalar coupling with the neutron star in these theories. We find that within the parameter region where the observational constraints are satisfied, the effective scalar coupling almost coincides with that derived using the quadratic model with the same curvature. This indicates that the constraints obtained by the quadratic model will be used to limit the curvature of the coupling function universally in the future.

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References
How the literature uses it

3 arXiv papers cite this in 3 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

What it cites · 33 sentences without a confident label

Uses the method or tool of 5 papers
Uses data or values from 9 papers
Cites as support 1 paper
  • Moreover, using the catastrophe theory, it is shown that the onset of spontaneous scalarization in the quadratic coupling function corresponds to cusp catastrophe [ref] which is structurally stable, i.e. the theory is stable against adding higher order terms in the coupling function.

    Neutron stars in scalar-tensor theories of gravity and catastrophe theory · Choice of Coupling Function · 0.98

Cites as background 4 papers
  • The conformal symmetry (and its spontaneous breaking) has been actively studied in constructing models of inflation [ref] and in constructing geodesically complete cosmologies [ref] .

    Antigravity and the big crunch/big bang transition · Introduction · 0.93

  • The conformal symmetry (and its spontaneous breaking) has been actively studied in constructing models of inflation [ref] and in constructing geodesically complete cosmologies [ref] .

    Universality Class in Conformal Inflation · Introduction · 0.93

  • The conformal symmetry (and its spontaneous breaking) has been actively studied in constructing models of inflation [ref] and in constructing geodesically complete cosmologies [ref] .

    Local Conformal Symmetry in Physics and Cosmology · Introduction · 0.93

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