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Structure Formation and Backreaction in Growing Neutrino Quintessence
Youness Ayaita, Maik Weber, Christof Wetterich
A dependence of the neutrino masses on the dark energy scalar field could provide a solution to the why now problem of dark energy. The dynamics of the resulting cosmological model…
Where to look for solving the gauge hierarchy problem?
C. Wetterich
A mass of the Higgs boson close to 126 GeV may give a hint that the standard model of particle physics is valid up to the Planck scale. We discuss perspectives for the solution of…
Quantum phase transition in Bose-Fermi mixtures
Denis Ludwig, Stefan Floerchinger, Sergej Moroz +1
We study a quantum Bose-Fermi mixture near a broad Feshbach resonance at zero temperature. Within a quantum field theoretical model a two-step Gaussian approximation allows to capt…
Theoretical constraints on new generations with and without Quarks or Neutrinos
Alexander Knochel, Christof Wetterich
We consider large classes of chiral extensions of the Standard Model, including new quark generations that do not involve additional neutrinos as well as lepton generations without…
Oscillating nonlinear large scale structure in growing neutrino quintessence
Marco Baldi, Valeria Pettorino, Luca Amendola +1
Growing Neutrino quintessence describes a form of dynamical dark energy that could explain why dark energy dominates the universe only in recent cosmological times. This scenario p…
Hydrodynamic collective modes for cold trapped gases
Igor Boettcher, Stefan Floerchinger, Christof Wetterich
We suggest that collective oscillation frequencies of cold trapped gases can be used to test predictions from quantum many-body physics. Our motivation lies both in rigid experimen…