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http://hdl.handle.net/2445/179273
Title: | Correlation functions in scalar field theory at large charge |
Author: | Arias Tamargo, G. Rodríguez Gómez, Diego Russo, J. G. (Jorge Guillermo) |
Keywords: | Simetria (Física) Teoria quàntica de camps Symmetry (Physics) Quantum field theory |
Issue Date: | 28-Jan-2020 |
Publisher: | Springer Verlag |
Abstract: | We compute general higher-point functions in the sector of large charge operators ϕn,ϕ¯¯¯n at large charge in O(2) (ϕ¯¯¯ϕ)2 theory. We find that there is a special class of "extremal" correlators having only one insertion of ϕ¯¯¯n that have a remarkably simple form in the double-scaling limit n →∞ at fixed g n2 ≡ λ, where g ~ ϵ is the coupling at the O(2) Wilson-Fisher fixed point in 4 − ϵ dimensions. In this limit, also non-extremal correlators can be computed. As an example, we give the complete formula for ⟨ϕ(x1)nϕ(x2)nϕ¯¯¯(x3)nϕ¯¯¯(x4)n⟩, which reveals an interesting structure. |
Note: | Reproducció del document publicat a: https://doi.org/10.1007/JHEP01(2020)171 |
It is part of: | Journal of High Energy Physics, 2020, num. 171 |
URI: | http://hdl.handle.net/2445/179273 |
Related resource: | https://doi.org/10.1007/JHEP01(2020)171 |
ISSN: | 1126-6708 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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