Name: Nelson Nunes
 Institution: Institute for Theoretical Physics
 Title: Lumps in neutrino dark energy
 Key Words: Structure formation, dark energy, variation of parameters
 Abstract: The growing neutrino mass scenario arises from the coupling between a scalar field and the neutrino mass. This scalar field turns out to be a viable candidate of dark energy accelerating the universe shortly after neutrinos become non-relativistic. In my talk I propose to present results on the dependence on the mass of the neutrinos with their location within a neutrino lump and argue that this profile might be consistent a positive
variation of alpha cosmologically (suggested from quasar data) while satisfying the strong laboratory and geological bounds on its variation (from atomic clocks and the Oklo natural reactor).