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Very large scale structures in growing neutrino quintessence
Nico Wintergerst, Valeria Pettorino, David F. Mota +1
A quintessence scalar field or cosmon interacting with neutrinos can have important effects on cosmological structure formation. Within growing neutrino models the coupling becomes…
Peculiar Velocity Anomaly from Forces Beyond Gravity?
Youness Ayaita, Maik Weber, Christof Wetterich
We address recently reported anomalously large bulk flows on scales of 100 Mpc/h and beyond. These coherent motions of galaxies challenge the standard LCDM concordance model as wel…
Growing neutrino cosmology
Christof Wetterich, Valeria Pettorino
In growing neutrino models, the neutrino mass increases in time and stops the dynamical evolution of a dark energy scalar field, thus explaining the 'why now' problem. A new attrac…
Too few spots in the cosmic microwave background
Youness Ayaita, Maik Weber, Christof Wetterich
We investigate the abundance of large-scale hot and cold spots in the WMAP-5 temperature maps and find considerable discrepancies compared to Gaussian simulations based on the LCDM…
Nonperturbative thermodynamics of an interacting Bose gas
S. Floerchinger, C. Wetterich
We discuss the thermodynamics of a non-relativistic gas of bosons with a local repulsive interaction. In particular, we compute the temperature and density dependence of pressure,…
Clustering in growing neutrino cosmologies
Valeria Pettorino, David F. Mota, Georg Robbers +1
We show that growing neutrino models, in which the growing neutrino mass stops the dynamical evolution of a dark energy scalar field, lead to a substantial neutrino clustering on t…