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Neutrino Lump Fluid in Growing Neutrino Quintessence
Youness Ayaita, Maik Weber, Christof Wetterich
Growing neutrino quintessence addresses the "why now" problem of dark energy by assuming that the neutrinos are coupled to the dark energy scalar field. The coupling mediates an at…
Tan contact and universal high momentum behavior of the fermion propagator in the BCS-BEC crossover
Igor Boettcher, Sebastian Diehl, Jan M. Pawlowski +1
We derive the universal high momentum factorization of the fermion self-energy in the BCS-BEC crossover of ultracold atoms using nonperturbative quantum field theoretical methods.…
Chemical freeze-out in heavy ion collisions at large baryon densities
Stefan Floerchinger, Christof Wetterich
We argue that the chemical freeze-out in heavy ion collisions at high baryon density is not associated to a phase transition or rapid crossover. We employ the linear nucleon-meson…
Geometry and symmetries in lattice spinor gravity
C. Wetterich
Lattice spinor gravity is a proposal for regularized quantum gravity based on fermionic degrees of freedom. In our lattice model the local Lorentz symmetry is generalized to comple…
Spinor gravity and diffeomorphism invariance on the lattice
C. Wetterich
The key ingredient for lattice regularized quantum gravity is diffeomorphism symmetry. We formulate a lattice functional integral for quantum gravity in terms of fermions. This all…