| Full text | |
| Author(s): |
Miro, Joan Elias
[1]
;
Guerrieri, Andrea L.
[2]
;
Hebbar, Aditya
[3]
;
Penedones, Joao
[3]
;
Vieira, Pedro
[4, 2]
Total Authors: 5
|
| Affiliation: | [1] CERN, Theoret Phys Dept, Route Meyrin 385, CH-1211 Geneva - Switzerland
[2] Univ Estadual Paulista, ICTP South Amer Inst Fundamental Res, Inst Fis Teor, Rua Dr Bento Teobaldo Ferraz 271, BR-01140070 Sao Paulo, SP - Brazil
[3] Ecole Polytech Fed Lausanne, Inst Phys, Fields & String Lab, Route Sorge, BSP 728, CH-1015 Lausanne - Switzerland
[4] Perimeter Inst Theoret Phys, 31 Caroline St N, Waterloo, ON N2L 2Y5 - Canada
Total Affiliations: 4
|
| Document type: | Journal article |
| Source: | Physical Review Letters; v. 123, n. 22 NOV 27 2019. |
| Web of Science Citations: | 6 |
| Abstract | |
We bootstrap the S matrix of massless particles in unitary, relativistic two dimensional quantum field theories. We find that the low energy expansion of such S matrices is strongly constrained by the existence of a UV completion. In the context of flux tube (FT) physics, this allows us to constrain several terms in the S matrix low energy expansion or-equivalently-on Wilson coefficients of several irrelevant operators showing up in the FT effective action. These bounds have direct implications for other physical quantities; for instance, they allow us to further bound the ground state energy as well as the level splitting of degenerate energy levels of large FTs. We find that the S matrices living at the boundary of the allowed space exhibit an intricate pattern of resonances with one sharper resonance whose quantum numbers, mass, and width are precisely those of the world-sheet axion proposed by Athenodorou, Bringoltz, and Teper and Dubovsky, Flauger, and Gorbenko. The general method proposed here should be extendable to massless S matrices in higher dimensions and should lead to new quantitative bounds on irrelevant operators in theories of Goldstones and, also, in gauge and gravity theories. (AU) | |
| FAPESP's process: | 16/01343-7 - ICTP South American Institute for Fundamental Research: a regional center for theoretical physics |
| Grantee: | Nathan Jacob Berkovits |
| Support Opportunities: | Special Projects |