Towards a nonperturbative construction of the S-matrix

被引：10

作者：

Henning, Brian ^{[1
,2
]}

Murayama, Hitoshi ^{[3
,4
,5
]}

Riva, Francesco ^{[2
]}

Thompson, Jedidiah O. ^{[6
]}

Walters, Matthew T. ^{[1
,2
,7
]}

机构：

[1] Ecole Polytech Fed Lausanne EPFL, Inst Phys, CH-1015 Lausanne, Switzerland

[2] Univ Geneva, Dept Phys Theor, CH-1211 Geneva, Switzerland

[3] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[4] Univ Tokyo, Kavli Inst Phys & Math Universe WPI, Kashiwa 2778583, Japan

[5] Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[6] Stanford Univ, Stanford Inst Theoret Phyiscs, Stanford, CA 94305 USA

[7] Trinity Coll Dublin, Sch Math, Dublin 2, Ireland

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2023年 / 2023卷 / 05期

基金：

瑞士国家科学基金会;

关键词：

Nonperturbative Effects; Scattering Amplitudes; Field Theories in Lower Dimensions; SPACE APPROACH; ISING-MODEL;

D O I：

10.1007/JHEP05(2023)197

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 present a nonperturbative recipe for directly computing the S-matrix in strongly-coupled QFTs. The method makes use of spectral data obtained in a Hamiltonian framework and can be applied to a wide range of theories, including potentially QCD. We demonstrate the utility of this prescription in the specific example of the 2+1d O(N) model at large N, using energy eigenstates computed with Hamiltonian truncation to reproduce the full 2 -> 2 scattering amplitude for arbitrary (complex) center-of-mass energy.

引用

页数：37

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