title: Ab Initio simulations of dense helium plasmas.
abstract: We study the thermophysical properties of dense helium plasmas by using quantum molecular dynamics and orbital-free molecular dynamics simulations, where densities are considered from 400 to 800  g/cm3 and temperatures up to 800 eV. Results are presented for the equation of state. From the Kubo-Greenwood formula, we derive the electrical conductivity and electronic thermal conductivity. In particular, with the increase in temperature, we discuss the change in the Lorenz number, which indicates a transition from strong coupling and degenerate state to moderate coupling and partial degeneracy regime for dense helium.
authors.affiliation: LCP, Institute of Applied Physics and Computational Mathematics, P.O. Box 8009, Beijing 100088, People's Republic of China.
authors.forename: Cong
authors.initials: C
authors.lastname: Wang
authors.forename: Xian-Tu
authors.initials: XT
authors.lastname: He
authors.forename: Ping
authors.initials: P
authors.lastname: Zhang