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Functional renormalization for spontaneous symmetry breaking in the Hubbard model
Simon Friederich, Hans Christian Krahl, Christof Wetterich
The phases with spontaneously broken symmetries corresponding to antiferromagnetic and d-wave superconducting order in the two-dimensional t-t'-Hubbard model are investigated by me…
Coupled dark energy and dark matter from dilatation anomaly
Joschka Beyer, Sami Nurmi, Christof Wetterich
Cosmological runaway solutions may exhibit an exact dilatation symmetry in the asymptotic limit of infinite time. In this limit, the massless dilaton or cosmon could be accompanied…
Neutrino lumps and the Cosmic Microwave Background
Valeria Pettorino, Nico Wintergerst, Luca Amendola +1
The interaction between the cosmon and neutrinos may solve the "why now problem" for dark energy cosmologies. Within growing neutrino quintessence it leads to the formation of nonl…
Non-commutativity from coarse grained classical probabilities
C. Wetterich
Non-commutative quantum physics at the atom scale can arise from coarse graining of a classical statistical ensemble at the Planck scale. Position and momentum of an isolated parti…
Asymptotic safety of gravity and the Higgs boson mass
Mikhail Shaposhnikov, Christof Wetterich
There are indications that gravity is asymptotically safe. The Standard Model (SM) plus gravity could be valid up to arbitrarily high energies. Supposing that this is indeed the ca…