Fixed-Functionals of three-dimensional Quantum Einstein Gravity
Fixed-Functionals of three-dimensional Quantum Einstein Gravity
复制标题
三维量子爱因斯坦引力的固定泛函
DOI:
10.1007/jhep11(2012)131
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发表时间:
2012
影响因子:
5.4
通讯作者:
O. Zanusso
中科院分区:
文献类型:
--
作者:
M. Demmel;F. Saueressig;O. Zanusso
We study the non-perturbative renormalization group flow of f (R)-gravity in three-dimensional Asymptotically Safe Quantum Einstein Gravity. Within the conformally reduced approximation, we derive an exact partial differential equation governing the RG-scale dependence of the function f (R). This equation is shown to possess two isolated and one continuous one-parameter family of scale-independent, regular solutions which constitute the natural generalization of RG fixed points to the realm of infinite-dimensional theory spaces. All solutions are bounded from below and give rise to positive definite kinetic terms. Moreover, they admit either one or two UV-relevant deformations, indicating that the corresponding UV-critical hypersurfaces remain finite dimensional despite the inclusion of an infinite number of coupling constants. The impact of our findings on the gravitational Asymptotic Safety program and its connection to new massive gravity is briefly discussed.
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DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
Pedro F. Machado;R. Percacci
通讯作者:
R. Percacci
影响因子:
5
作者:
Stefan Rechenberger;F. Saueressig
通讯作者:
F. Saueressig
影响因子:
5
作者:
R. Flore;A. Wipf;O. Zanusso
通讯作者:
O. Zanusso
影响因子:
4.6
作者:
R. Cole
通讯作者:
R. Cole
DOI:
10.1088/0954-3899/39/3/033001
发表时间:
2011-08
期刊:
Journal of Physics G
影响因子:
--
作者:
J. Braun
通讯作者:
J. Braun