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10 papers · 2 filters
Non-perturbative thermal flows and resummations
Daniel F. Litim, Jan M. Pawlowski
We construct a functional renormalisation group for thermal fluctuations. Thermal resummations are naturally built in, and the infrared problem of thermal fluctuations is well unde…
D-Branes, RR-Fields and Duality on Noncommutative Manifolds
Jacek Brodzki, Varghese Mathai, Jonathan Rosenberg +1
We develop some of the ingredients needed for string theory on noncommutative spacetimes, proposing an axiomatic formulation of T-duality as well as establishing a very general for…
Manifestly Gauge Invariant QCD
Tim R. Morris, Oliver J. Rosten
Building on recent work in SU(N) Yang-Mills theory, we construct a manifestly gauge invariant exact renormalization group for QCD. A gauge invariant cutoff is constructed by embedd…
Fixed points of quantum gravity in higher dimensions
Peter Fischer, Daniel F. Litim
We study quantum gravity in more than four dimensions by means of an exact functional flow. A non-trivial ultraviolet fixed point is found in the Einstein-Hilbert theory. It is sho…
On fixed points of quantum gravity
Daniel F. Litim
We study the short distance behaviour of euclidean quantum gravity in the light of Weinberg's asymptotic safety scenario. Implications of a non-trivial ultraviolet fixed point are…
Structure of the MHV-rules Lagrangian
James H. Ettle, Tim R. Morris
Recently, a canonical change of field variables was proposed that converts the Yang-Mills Lagrangian into an MHV-rules Lagrangian, i.e. one whose tree level Feynman diagram expansi…