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Critical temperature and superfluid gap of the Unitary Fermi Gas from Functional Renormalization
Igor Boettcher, Jan M. Pawlowski, Christof Wetterich
We investigate the superfluid transition of the Unitary Fermi Gas by means of the Functional Renormalization Group, aiming at quantitative precision. We extract $T_{\rm c}/μ=0.38(2…
Isotropization from Color Field Condensate in heavy ion collisions
Stefan Floerchinger, Christof Wetterich
The expanding fireball shortly after a heavy ion collision may be qualitatively described by a condensate of color fields or gluons which is analogous to Bose-Einstein-condensation…
Linear lattice gauge theory
C. Wetterich
Linear lattice gauge theory is based on link variables that are arbitrary complex or real matrices, in distinction to the usual (non-linear) formulation with unitary or…
Dilaton Quantum Gravity
Tobias Henz, Jan Martin Pawlowski, Andreas Rodigast +1
We propose a simple fixed point scenario in the renormalization flow of a scalar dilaton coupled to gravity. This would render gravity non-perturbatively renormalizable and thus co…
Cosmon inflation
C. Wetterich
The cosmon field responsible for dynamical dark energy can induce an inflationary period in early cosmology. Details depend on dilatation symmetry breaking terms in its potential a…
How early is early dark energy?
Valeria Pettorino, Luca Amendola, Christof Wetterich
We investigate constraints on early dark energy (EDE) from the Cosmic Microwave Background (CMB) anisotropy, taking into account data from WMAP9 combined with latest small scale me…
Error estimates and specification parameters for functional renormalization
David Schnoerr, Igor Boettcher, Jan M. Pawlowski +1
We present a strategy for estimating the error of truncated functional flow equations. While the basic functional renormalization group equation is exact, approximated solutions by…