A species or weak-gravity bound for large N gauge theories coupled to gravity
A species or weak-gravity bound for large N gauge theories coupled to gravity
复制标题
与重力耦合的大 N 规范理论的物种或弱重力界限
DOI：
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发表时间：
2019
影响因子：
5.4
通讯作者：
S. Kundu
中科院分区：
文献类型：
--
作者：
J. Kaplan;S. Kundu
因果关系限制了大质量高自旋粒子在AdS和平面时空中的引力相互作用。我们探索了这些约束在多大程度上适用于复合粒子，解释了为什么它们不排除宏观物体或氢原子。然而，我们发现它们确实适用于限定大N规范理论中的胶球和介子。假设这些理论包含大量的一般自旋束缚态，我们在（3 + 1）个时空维度上找到了形式为N≤MPlΛQCDdocumentclass[12pt]{minimal}的参数界{useppackageamsmath} useppackagewasysym{ useppackageamsfonts} useppackageamssyb{ useppackagemathrsfs} useppackageupgreek {setlengthoddsidemargin}-69pt{ }egindocument{}{}{}{}{}$$ Nlesssim frac{M_{Pl}}{Lambda_{mathrm{QCD}}} $$ enddocument{与N、QCD尺度和普朗克尺度相关}。我们还认为，在平坦时空中的斜向散射可以推导出一个用紫外截止尺度代替∧QCD的更强界。
Causality constrains the gravitational interactions of massive higher spin particles in both AdS and flat spacetime. We explore the extent to which these constraints apply to composite particles, explaining why they do not rule out macroscopic objects or hydrogen atoms. However, we find that they do apply to glueballs and mesons in confining large N gauge theories. Assuming such theories contain massive bound states of general spin, we find parametric bounds in (3 + 1) spacetime dimensions of the form N≲MPlΛQCDdocumentclass[12pt]{minimal} usepackage{amsmath} usepackage{wasysym} usepackage{amsfonts} usepackage{amssymb} usepackage{amsbsy} usepackage{mathrsfs} usepackage{upgreek} setlength{oddsidemargin}{-69pt} egin{document}$$ Nlesssim frac{M_{Pl}}{Lambda_{mathrm{QCD}}} $$end{document} relating N, the QCD scale, and the Planck scale. We also argue that a stronger bound replacing ∧QCD with the UV cut-off scale may be derived from eikonal scattering in flat spacetime.
绘制具有连续全局对称性的 3D CFT 空间
影响因子：
5.4
作者：
Dymarsky, Anatoly;Penedones, Joao;Trevisani, Emilio;Vichi, Alessandro
通讯作者：
Vichi, Alessandro