Detectors in weakly-coupled field theories
Detectors in weakly-coupled field theories
复制标题
弱耦合场论中的探测器
DOI:
10.1007/jhep04(2023)014
复制
发表时间:
2023
影响因子:
5.4
通讯作者:
Simmons-Duffin, David
中科院分区:
文献类型:
--
作者:
Caron-Huot, Simon;Koloğlu, Murat;Kravchuk, Petr;Meltzer, David;Simmons-Duffin, David
We initiate a study of asymptotic detector operators in weakly-coupled field theories. These operators describe measurements that can be performed at future null infinity in a collider experiment. In a conformal theory they can be identified with light-ray operators, and thus have a direct relation to the spectrum of the theory. After a general discussion of the underlying physical picture, we show how infrared divergences of general detector operators can be renormalized in perturbation theory, and how they give rise to detector anomalous dimensions. We discuss in detail how this renormalization can be performed at the intersections of the Regge trajectories where non-trivial mixing occurs, which is related to the poles in anomalous dimensions at special values of spin. Finally, we discuss novel horizontal trajectories in scalar theories and show how they contribute to correlation functions. Our calculations are done in the example of ϕ 4 theory in d= 4− ϵ dimensions, but the methods are applicable more broadly. At the Wilson-Fisher fixed point our results include an explicit expression for the Pomeron light-ray operator at two loops, as well as a prediction for the value of the Regge intercept at five loops.
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影响因子:
4.4
作者:
A. Mueller
通讯作者:
A. Mueller
DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
A. Kotikov;L. Lipatov
通讯作者:
L. Lipatov
DOI:
10.1016/s0550-3213(00)00045-6
发表时间:
1999-12
期刊:
Nuclear Physics
影响因子:
--
作者:
S. Moch;J. Vermaseren
通讯作者:
S. Moch;J. Vermaseren
影响因子:
2.4
作者:
M. Lüscher;G. Mack
通讯作者:
G. Mack
影响因子:
5
作者:
Wenliang Li
通讯作者:
Wenliang Li