Electronic structure and energetics of praseodymium and   $\alpha$-plutonium under pressure
  We develop a new implementation of the Gutzwiller approximation (GA) and interface it with the local density approximation (LDA). This formulation enables us to study complex $4f$ and $5f$ systems. We perform calculations of praseodymium and $\alpha$-plutonium under pressure, which compare very well with the experiments. Our study of praseodymium indicates that both structure change and $f$-delocalization are important to obtain the correct phase diagram and, in particular, the pressure-induced volume-collapse transition. Our calculations of $\alpha$-plutonium indicate that, even though the $f$ electrons are delocalized in this phase, the electron-correlations affect substantially its electronic structure and thermodynamical properties. 
Nicola Lanat\`a, Yongxin Yao, Cai-Zhuang Wang, Kai-Ming Ho and Gabriel   Kotliar
cond-mat.str-el