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A bound on the nucleon Druck-term from chiral EFT in curved space-time and mechanical stability conditions

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arxiv 2104.13954 v2 pith:3SQYIPZG submitted 2021-04-28 hep-ph hep-exnucl-th

classification hep-phhep-exnucl-th
keywords boundchiraldruck-termgravitationalconditionscurvedeffectivefield
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

Using dispersive representations of the nucleon gravitational form factors, the results for their absorptive parts from chiral effective field theory in curved space-time, and the mechanical stability conditions, we obtain a model independent inequality for the value of the gravitational $D(t)$ form factor at zero momentum transfer (Druck-term). In particular, the obtained inequality leads to a conservative bound on the Druck-term in the chiral limit $D \leq -0.95(9)$. This bound implies the restriction on the low-energy constant $c_8$ of the effective chiral action for nucleons and pions in the presence of an external gravitational field, $c_8\leq -1.1(1)$ GeV$^{-1}$. For the physical pion mass we obtain a model independent bound $D\leq -0.20(2)$.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Reconstruction of Gravitational Form Factors using Generative Machine Learning

    hep-ph 2026-02 conditional novelty 6.0 of 10

    A diffusion model trained on synthetic physics-motivated curves reconstructs the proton's A(t), J(t), D(t) from sparse data, extracting c8=-4.6±0.8, c9=-0.61±0.19, and D(0)=-4.3±0.8.

  2. Gravitational form factors of the Higgs boson

    hep-ph 2025-08 conditional novelty 6.0 of 10

    The one-loop electroweak gravitational form factors of the Higgs give a finite theta2 and an energy radius r^2 approximately 1.44e-6 GeV^-2, with theta1 requiring an EFT counterterm.

  3. Gravitational form factors of the nucleon in the Skyrme model based on scale-invariant chiral perturbation theory

    hep-ph 2025-07 conditional novelty 5.0 of 10

    A Skyrme model with a dilaton field attributes the proton's negative internal pressure and confining force to the gluonic scale anomaly, and reproduces the lattice QCD D(t) form factor.

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