INT Special Seminars
Javier Menendez, TU Darmstadt
"Exploring exotic nuclei, neutrinos and dark matter with chiral effective
10:30 am, C421 PAT
Thursday, January 23, 2014
Chiral effective field theory (EFT) describes the interactions relevant
for the low-energy structure of nuclei. Two- and three-nucleon forces
have recently been combined with many-body methods suitable for
medium-mass nuclei. I will present results for the shell evolution of
exotic calcium isotopes, confirmed by precision experiments, and discuss
the extension to other medium-mass nuclei.
In addition, chiral EFT predicts the consistent electroweak currents
that enter the transition operators that test fundamental symmetries. I
will discuss matrix elements calculated with state-of-the-art nuclear
structure and chiral EFT currents, highlighting the effects of two-body
currents for neutrinoless double-beta decay, a key process to determine
the nature of the neutrinos and their masses.
Chiral EFT currents also impact the interaction of weakly interacting
massive particles (WIMPs) off nuclei. I will show results for the
elastic WIMP scattering off nuclei, and also discuss possible signals of
inelastic scattering, which would establish the spin-dependent character
of the WIMP-nucleus interaction.