发表机构
State Key Laboratory of Radio Astronomy and Technology, Xinjiang Astronomical Observatory, Chinese Academy of Sciences; Shanxi Province Intelligent Optoelectronic Sensing Application Technology Innovation Center, Yuncheng University; Departamento de Física Teórica, IF-UERJ; College of Mechanical and Electrical Engineering, Tarim University; Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University; School of Physics and Astronomy, Beijing Normal University（中国科学院新疆天文台射电天文与技术重点实验室; 运城学院山西省智能光电传感应用技术创新中心; 里约热内卢州立大学理论物理研究所; 塔里机械与电气工程学院; 北京师范大学天文与前沿物理研究所; 北京师范大学物理与天文学院）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究利用GWTC-3暗引力波源的观测数据，通过引力波传播效应约束动力学Barbero--Immirzi场，得到ξ_BI的有效约束，探测了与挠率波约束互补的物理部分。
AI 中文摘要
Barbero--Immirzi（BI）参数最初是一阶引力Holst项中的常数，在爱因斯坦-嘉当理论中可被推广为与挠率耦合的动力学标量场γ(x)。我们将该动力学BI部分的主导引力波（GW）传播效应表述为有效摩擦项Γ_BI=ξ_BI H，并将其与GW光度距离关联。随后，我们将所得的距离-红移关系与已发表的LIGO-Virgo-KAGRA（LVK）GWTC-3暗引力波源对Belgacem-Maggiore参数Ξ₀=1.2⁺⁰·⁷₋₀·⁷的约束进行比较。未重复LVK的分层贝叶斯分析，而是采用代表性红移映射及对引用后验的高斯近似，我们在约90%可信度下得到保守有效约束|ξ_BI|≲2.1。对于此处考虑的特定BI实现，ξ_BI在采用的主导阶为非负，因此对应的单侧解释为0≤ξ_BI≲2.1。该可观测约束是对BI诱导的有效GW摩擦的表述。将其转换为微观涨落振幅需要对BI-挠率部分进行独立归一化；我们未在现象学上施加此类归一化。该GW传播测试探测的部分与挠率波和物质部分的约束互补，且不依赖于天体物理源激发传播挠率模式的假设。
英文摘要
We investigate which operators in first-order dynamical Barbero--Immirzi (BI) gravity control cosmological tensor propagation at the action level. Within a bosonic, two-derivative, curvature-linear Einstein--Cartan class, eliminating the algebraic Lorentz connection reveals a separation between the scalar sector and the tensor kinetic normalization. In particular, the Holst-to-Palatini ratio determines the scalar kinetic structure, whereas the transverse-traceless tensor mode is normalized by the parity-even Hilbert--Palatini coefficient. As a consequence, a minimal dynamical Holst sector with fixed parity-even normalization remains exactly on the general-relativistic tensor-propagation surface and does not generate anomalous gravitational-wave friction. We then construct a regular nonminimal parity-even realization in which the tensor normalization evolves cosmologically, derive the corresponding standard-siren observable, and apply current GWTC-3, GWTC-4.0, and GWTC-5.0 information as an observational test of this action-level tensor sector. The resulting constraints should therefore be interpreted as limits on the evolution of the tensor kinetic normalization rather than direct constraints on minimal BI torsion dynamics.
Comments15 pages, 5 figures. Revised version
