Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2006-02-16
Physics
Condensed Matter
Other Condensed Matter
14 pages, 7 figures
Scientific paper
10.1142/S0217979206036077
Macroscopic systems of hydrogen molecules exhibit a rich thermodynamic phase behavior. Due to the simplicity of the molecular constituents a detailed exploration of the thermal properties of these boson systems at low temperatures is of fundamental interest. Here,we report theoretical and experimental results on various spatial correlation functions and corresponding distributions in momentum space of liquid para-hydrogen close to the triple point. They characterize the structure of the correlated liquid and provide information on quantum effects present in this Bose fluid. Numerical calculations employ Correlated Density-Matrix(CDM)theory and Path-Integral Monte-Carlo(PIMC)simulations. A comparison of these theoretical results demonstrates the accuracy of CDM theory. This algorithm therefore permits a fast and efficient quantitative analysis of the normal phase of liquid para-hydrogen.We compare and discuss the theoretical results with available experimental data.
Bermejo Francisco J.
Dawidowski Javier
Gernoth Klaus A.
Lindenau Thomas
Ristig Manfred L.
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