Flux correlators and semiclassics

被引:1
|
作者
Firat, Eren [1 ]
Monin, Alexander [1 ,2 ]
Rattazzi, Riccardo [1 ]
Walters, Matthew T. [1 ,3 ,4 ,5 ]
机构
[1] Ecole Polytech Fed Lausanne EPFL, Inst Phys, Theoret Particle Phys Lab LPTP, CH-1015 Lausanne, Switzerland
[2] Univ South Carolina, Dept Phys & Astron, Columbia, SC 29208 USA
[3] Univ Geneva, Dept Theoret Phys, CH-1211 Geneva, Switzerland
[4] Trinity Coll Dublin, Hamilton Math Inst, Sch Math, Dublin, Ireland
[5] Heriot Watt Univ, Dept Math, Maxwell Inst Math Sci, Edinburgh EH14 4AS, Scotland
基金
爱尔兰科学基金会; 美国国家科学基金会; 瑞士国家科学基金会;
关键词
Effective Field Theories; Large-Order Behaviour of Perturbation Theory; Renormalons; Nonperturbative Effects; Scale and Conformal Symmetries; MULTIPARTICLE AMPLITUDES; EVENT SHAPES; GRAPHS; ENERGY;
D O I
10.1007/JHEP03(2024)067
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We consider correlators for the flux of energy and charge in the background of operators with large global U(1) charge in conformal field theory (CFT). It has recently been shown that the corresponding Euclidean correlators generically admit a semiclassical description in terms of the effective field theory (EFT) for a conformal superfluid. We adapt the semiclassical description to Lorentzian observables and compute the leading large charge behavior of the flux correlators in general U(1) symmetric CFTs. We discuss the regime of validity of the large charge EFT for these Lorentzian observables and the subtleties in extending the EFT approach to subleading corrections. We also consider the Wilson-Fisher fixed point in d = 4 - epsilon dimensions, which offers a specific weakly coupled realization of the general setup, where the subleading corrections can be systematically computed without relying on an EFT.
引用
收藏
页数:35
相关论文
共 50 条