In this paper we study both projective and non-projective constraints on four-dimensional gravitational effective fields theories implied from unitarity, causality and crossing, assuming perturbative UV completions in $M_{\rm pl}$. We derive bounds on the Wilson coefficients of $R^3$ and $D^{2n}R^4$ from its dispersive representation, utilizing both numerical semi-definite programming and analytic geometry analysis. From the former, we derive projective bounds on ratios of couplings and observe accumulation point spectrum populating the boundary of the allowed region. For the latter we consider the non-projective geometry of the EFThedron, which we relate to the known $L$-moment problem in the literature. This allows us to move beyond positivity and incorporate the upper bound from unitarity of the imaginary parts of partial waves. This leads to sharp bounds on individual coefficients, which are of order unity when normalized with respect to the UV scale. Finally, the non-projective geometry also allows us to derive optimal bounds reflecting assumptions of low-spin dominance, improving previous results. We complement the analytic analysis with a simple linear programming approach that validates the bounds.
On the Asymptotic Causal Structure in Gravitational EFTs
Scuola Normale Superiore(高等师范学校);INFN, Sezione di Pisa(意大利国家核物理研究所比萨分部);Department of Physics and Beyond: Center for Fundamental Concepts in Science, Arizona State University(亚利桑那州立大学物理及 beyond 系:基础概念科学中心);ICTP, International Centre for Theoretical Physics(国际理论物理中心);IFPU - Institute for Fundamental Physics of the Universe(宇宙基础物理研究所);INFN, Sezione di Trieste(意大利国家核物理研究所的里雅斯特分部);SISSA, International School for Advanced Studies(的里雅斯特高级研究学院);Université Paris Cité, CNRS, AstroParticule et Cosmologie(巴黎西岱大学,法国国家科学研究中心,天体粒子与宇宙学)
Weak Gravity Conjecture in the sky: gravitational waves from preheating in Einstein-Maxwell-Scalar EFT
School of Fundamental Physics and Mathematical Sciences, Hangzhou Institute for Advanced Study, UCAS(基础物理与数学科学学院,杭州高等研究院,中国科学院大学);Institute of Theoretical Physics, Chinese Academy of Sciences(中国科学院理论物理研究所);University of Chinese Academy of Sciences(中国科学院大学);Department of Physics, Blackett Laboratory, Imperial College London(帝国理工学院布莱克特物理学系);International Centre for Theoretical Physics Asia-Pacific(亚太理论物理中心)
Sampling the Graviton Pole and Deprojecting the Swampland
School of Fundamental Physics and Mathematical Sciences, Hangzhou Institute for Advanced Study, UCAS(杭州高等研究院基础物理与数学学院,UCAS);Institute of Theoretical Physics, Chinese Academy of Sciences(中国科学院理论物理研究所);University of Chinese Academy of Sciences(中国科学院大学);Beijing Institute of Mathematical Sciences and Applications (BIMSA)(北京国际数学研究中心);International Centre for Theoretical Physics Asia-Pacific(亚太理论物理中心);Department of Physics, Blackett Laboratory, Imperial College London(帝国理工学院布莱克特物理系)
Dynamical Tidal Response of Non-rotating Black Holes: Connecting the MST Formalism and Worldline EFT
Yukawa Institute for Theoretical Physics, Kyoto University(京都大学汤川理论物理研究所);Graduate School of Science, The University of Tokyo(东京大学理学研究科);Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study (UTIAS), The University of Tokyo(东京大学宇宙物质量子前沿研究中心(WPI),东京大学高等研究院,东京大学);The Hakubi Center for Advanced Research, Kyoto University(京都大学博慧中心);RIKEN iTHEMS(理化学研究所 iTHEMS);Department of Physics, College of Humanities and Sciences, Nihon University(日本大学文理学部物理学系);High Energy Physics Research Unit, Department of Physics, Faculty of Science, Chulalongkorn University(朱拉隆功大学理学院物理学系高能物理研究组)
Gravitational Sommerfeld Effects: Formalism, Renormalization, and Perturbation to $O(G^{10})$
National Taiwan University(台湾大学);National Center for Theoretical Sciences(国家理论科学中心);Max Planck-IAS-NTU Center for Particle Physics, Cosmology and Geometry(马克斯·普朗克研究所-台湾大学粒子物理、宇宙学与几何中心);Uppsala University(乌普萨拉大学);Princeton University(普林斯顿大学)
Effective Field Theory of Chiral Gravitational Waves
Yukawa Institute for Theoretical Physics, Kyoto University(京都大学汤川理论物理研究所);Ochanomizu University(御茶水女子大学);Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo(东京大学宇宙物质量子前沿研究センター(WPI));Waseda University(早稻田大学)
From Frame Covariance to the Swampland Distance Conjecture
Institute of Physics, University of Tartu(塔尔图大学物理研究所);School of Physics and Astronomy, University of Nottingham(诺丁汉大学物理与天文学学院);Nottingham Centre of Gravity, University of Nottingham(诺丁汉大学引力中心)
One-loop renormalization of the effective field theory of inflationary fluctuations from gravitational interactions
New York University(纽约大学);Laboratoire de Physique de l’École Normale Supérieure, ENS, CNRS, Université PSL, Sorbonne Université, Université Paris Cité(巴黎高等师范学院物理实验室,ENS,法国国家科学研究中心,巴黎文理研究大学,索邦大学,巴黎西岱大学)
Precise Calibration of the One-Loop Trispectrum in the Effective Field Theory of Large Scale Structure
宇宙的大尺度结构(LSS)有可能为宇宙学中尚未解决的问题提供决定性的答案。早期的尝试,它的分析建模集中在使用微扰理论。然而,由引力坍缩引入的小尺度效应不能用微扰来描述,而微扰理论的失败甚至在最大尺度上也能反映出来。大尺度结构的有效场论(Effective Field Theory of Large Scale Structure,EFTofLSS)通过引入小尺度动力学效应的反项,已经成为描述大尺度LSS的一致方法。迄今为止,对EFT的研究主要集中在二点和三点函数上,而对四点函数和三谱的研究较少。三谱探测由非线性聚类、偏置和原始非高斯性引起的立方相互作用,并构成功率谱协方差矩阵的关键元素。在本文中,我们提出了明确的EFT计数器项的单圈三谱校准。具体来说,我们发现明确的证据,非零EFT更正。我们定义了两个单参数ansätze的counterterterm的一个循环传播,并表明,他们提供了一个很好的校正,在尺度低于k~0.07 h/Mpc的残差。然后,我们采取的幅度的线性和二次计算的counterkernels在我们以前的论文上的双谱,并使用它们在其余的counterterterms,建立的一致性的counterterterterms在两个,三个和四个点的功能。我们还表明,通常使用的EdS近似的密度场的增长导致的错误,是相同的幅度的循环校正大尺度上的三谱。