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Gravity in $${\varvec{d=2+\epsilon }}$$ d = 2 + ϵ dimensions and realizations of the diffeomorphisms group

التفاصيل البيبلوغرافية
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
الوصف
تدمد:14346044
14346052
DOI:10.1140/epjc/s10052-021-09719-z