دورية أكاديمية
Gravity in $${\varvec{d=2+\epsilon }}$$ d = 2 + ϵ dimensions and realizations of the diffeomorphisms group
العنوان: | Gravity in $${\varvec{d=2+\epsilon }}$$ d = 2 + ϵ dimensions and realizations of the diffeomorphisms group |
---|---|
المؤلفون: | Riccardo Martini, Alessandro Ugolotti, Francesco Del Porro, Omar Zanusso |
المصدر: | European Physical Journal C: Particles and Fields, Vol 81, Iss 10, Pp 1-17 (2021) |
بيانات النشر: | SpringerOpen, 2021. |
سنة النشر: | 2021 |
المجموعة: | LCC:Astrophysics LCC:Nuclear and particle physics. Atomic energy. Radioactivity |
مصطلحات موضوعية: | Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798 |
الوصف: | Abstract We discuss two separate realizations of the diffeomorphism group for metric gravity, which give rise to theories that are classically equivalent, but quantum mechanically distinct. We renormalize them in $$d=2+\epsilon $$ d = 2 + ϵ dimensions, developing a new procedure for dimensional continuation of metric theories and highlighting connections with the constructions that previously appeared in the literature. Our hope is to frame candidates for ultraviolet completions of quantum gravity in $$d>2$$ d > 2 and give some perturbative mean to assess their existence in $$d=4$$ d = 4 , but also to speculate on some potential obstructions in the continuation of such candidates to finite values of $$\epsilon $$ ϵ . Our results suggest the presence of a conformal window in d which seems to extend to values higher than four. |
نوع الوثيقة: | article |
وصف الملف: | electronic resource |
اللغة: | English |
تدمد: | 1434-6044 1434-6052 |
Relation: | https://doaj.org/toc/1434-6044; https://doaj.org/toc/1434-6052 |
DOI: | 10.1140/epjc/s10052-021-09719-z |
URL الوصول: | https://doaj.org/article/6d9ac056f0414aa78f4787601301aec0 |
رقم الأكسشن: | edsdoj.6d9ac056f0414aa78f4787601301aec0 |
قاعدة البيانات: | Directory of Open Access Journals |
تدمد: | 14346044 14346052 |
---|---|
DOI: | 10.1140/epjc/s10052-021-09719-z |