The low-energy ARPES and heat capacity of Na$_{0.3}$CoO$_2$: A DMFT study

We use DMFT to calculate the ARPES spectrum and heat capacity for Na$_{0.3}$CoO$_2$. Both the traditional Hirsch-Fye (HF) Quantum Monte-Carlo technique and the newly developed continuous time (CT) quantum Monte-Carlo technique are used to solve the DMFT impurity problem. We show that the e$_g$' hole pockets on the Fermi surface are destroyed as the on-site coulomb repulsion is increased. Additionally, we show that quantitative agreement with both ARPES and heat capacity can be achieved.