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arXiv 2603.08481hep-thgr-qc
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应力张量变形场理论的引力表述

Gravitational formulation of stress-tensor deformed field theories

Center for Theoretical Physics and College of Physics, Jilin University(吉林大学理论物理中心与物理学院);Institute of Theoretical Physics, School of Physics, Dalian University of Technology(大连理工大学物理学院理论物理研究所);Institute of Fundamental Physics and Quantum Technology & School of Physical Science and Technology, Ningbo University(宁波大学基础物理与量子技术研究所与物理科学与技术学院)

Yunfei Xie, Yun-Ze Li, Lixin Xu, Song He

AI总结:

本文提出通过引力表述处理应力张量变形场理论,结合QFT与爱因斯坦引力,通过构造性完成方法实现局部化,并应用于多种变形模型。

摘要:

应力张量变形建议了涌现引力的几何起源,但通常对于d>2的情况是非局部的。我们将一个种子QFT与爱因斯坦引力耦合,并用变形参数λ进行评估,计算引力路径积分在度规极值点处的值。在固定参考背景周围,主导的变形是通用的:一个双局部项,其核由引力子格林函数设定,加上系统性的高阶展开。在极值点(变形)度规上表达后,流变得局部。我们随后提供了两种构造性的完成方法:Palatini f(R)引力和适用于一般里奇基理论的本征值方法,并将其应用于标量广义Nambu-Goto和det T变形(任意d),二维多标量ModMax和Born-Infeld模型,以及四维根-T\ar{T}和T\ar{T}流的麦克斯韦理论,产生ModMax和Born-Infeld电动力学。在自由场理论中,非壳分析进一步显示,主导的量子修正产生一个具有受控高阶导数项的爱因斯坦-希尔伯特项。

英文摘要:

Stress-tensor deformations suggest a geometric origin of emergent gravity but are typically non-local for $d>2$. We couple a seed QFT to Einstein gravity with deformation parameter $λ$ and evaluate the gravitational path integral at the metric saddle. Around a fixed reference background, the leading deformation is universal: a bilocal term quadratic in the stress tensor with kernel set by the graviton Green's function, plus a systematic higher-order expansion. Expressed on the saddle-point (deformed) metric, the flow becomes local. We then provide two constructive completions on deformed backgrounds--Palatini $f(R)$ gravity and an eigenvalue method for general Ricci-based theories--and apply them to scalar generalized Nambu-Goto and $\det T$ deformations (arbitrary $d$), two-dimensional multi-scalar ModMax and Born-Infeld models, and four-dimensional root-$T\bar T$ and $T\bar T$ flows of Maxwell theory yielding ModMax and Born-Infeld electrodynamics. In free field theory, an off-shell analysis further shows that the leading quantum correction generates an Einstein-Hilbert term with controlled higher-derivative terms.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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