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pro vyhledávání: '"Nink, Andreas"'
Autor:
Nink, Andreas
In this thesis we investigate various fundamental aspects of asymptotically safe quantum gravity, in particular the compatibility of Asymptotic Safety with the requirements for background independence and unitarity. The first part contains a detailed
Externí odkaz:
http://arxiv.org/abs/1701.08344
Autor:
Nink, Andreas, Reuter, Martin
Publikováno v:
JHEP 1602 (2016) 167
Being interested in the compatibility of Asymptotic Safety with Hilbert space positivity (unitarity), we consider a local truncation of the functional RG flow which describes quantum gravity in $d>2$ dimensions and construct its limit of exactly two
Externí odkaz:
http://arxiv.org/abs/1512.06805
Autor:
Demmel, Maximilian, Nink, Andreas
Publikováno v:
Phys. Rev. D 92, 104013 (2015)
We argue that the exponential relation $g_{\mu\nu} = \bar{g}_{\mu\rho}\big(\mathrm{e}^h\big)^\rho{}_\nu$ is the most natural metric parametrization since it describes geodesics that follow from the basic structure of the space of metrics. The corresp
Externí odkaz:
http://arxiv.org/abs/1506.03809
Autor:
Nink, Andreas
Publikováno v:
Phys. Rev. D 91, 044030 (2015)
Motivated by conformal field theory studies we investigate Quantum Einstein Gravity with a new field parametrization where the dynamical metric is basically given by the exponential of a matrix-valued fluctuating field, $g_{\mu\nu}=\bar{g}_{\mu\rho}(
Externí odkaz:
http://arxiv.org/abs/1410.7816
Autor:
Nink, Andreas, Reuter, Martin
Publikováno v:
Int. J. Mod. Phys. D22 (2013) 1330008
We discuss the conceptual ideas underlying the Asymptotic Safety approach to the nonperturbative renormalization of gravity. By now numerous functional renormalization group studies predict the existence of a suitable nontrivial ultraviolet fixed poi
Externí odkaz:
http://arxiv.org/abs/1212.4325
Autor:
Nink, Andreas, Reuter, Martin
Publikováno v:
JHEP 1301 (2013) 062
We identify a simple physical mechanism which is at the heart of Asymptotic Safety in Quantum Einstein Gravity (QEG) according to all available effective average action-based investigations. Upon linearization the gravitational field equations give r
Externí odkaz:
http://arxiv.org/abs/1208.0031
Autor:
Winker, Martina, Fischer, Michaela, Bliedung, Alexa, Bürgow, Grit, Germer, Jörn, Mohr, Marius, Nink, Andreas, Schmitt, Bea, Wieland, Arne, Dockhorn, Thomas
The HypoWave transdisciplinary research project investigated the innovation of water reuse in a hydroponic system, focusing on its applicability in Germany. The methods applied were the operation of a pilot plant for the appropriate treatment and sub
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od_______610::d12d1e48df4a9da79f380b2a06aac033
https://publica.fraunhofer.de/handle/publica/267557
https://publica.fraunhofer.de/handle/publica/267557
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Autor:
NINK, ANDREAS1 nink@thep.physik.uni-mainz.de, REUTER, MARTIN1 reuter@thep.physik.uni-mainz.de
Publikováno v:
Thirteenth Marcel Grossmann Meeting, The: on Recent Developments in Theoretical & Experimental General Relativity, Astrophysics & Relativistic Field Theories - Proceedings of the Mg13 Meeting on General Relativity (In 3 Volumes). 2015, p138-157. 20p.
Akademický článek
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