Correlation Effects in Positron-electron Systems: a Quantum Monte-carlo Study
نویسنده
چکیده
We present Quantum Monte-Carlo results for various positron-electron systems. We discuss the energetics of the bound state of a positronium (Ps) with finite atomic systems: a massive point charge Z, hydrogen (H) and lithium (Li). We also analyze the screening cloud around the positron in the positronium hydride flips) and in the homogeneous electron gas in order to determine the positron annihilation rates.
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