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Full-Text Articles in Physics
A Two-Chain Path Integral Model Of Positronium, L. Larrimore, R. N. Mcfarland, P. A. Sterne, Amy Lisa Graves
A Two-Chain Path Integral Model Of Positronium, L. Larrimore, R. N. Mcfarland, P. A. Sterne, Amy Lisa Graves
Physics & Astronomy Faculty Works
We have used a path integral Monte Carlo technique to simulate positronium (Ps) in a cavity. The primitive propagator is used, with a pair of interacting chains representing the positron and electron. We calculate the energy and radial distribution function for Ps enclosed in a hard, spherical cavity, and the polarizability of the model Ps in the presence of an electrostatic field. We find that the positron distribution near the hard wall differs significantly from that for a single particle in a hard cavity. This leads to systematic deviations from predictions of free-volume models which treat Ps as an effective, …
Helix Inversion In The Chiral Nematic And Isotropic Phases Of A Liquid Crystal, Benjamin P. Huff , '99, Jacob J. Krich , '00, Peter J. Collings
Helix Inversion In The Chiral Nematic And Isotropic Phases Of A Liquid Crystal, Benjamin P. Huff , '99, Jacob J. Krich , '00, Peter J. Collings
Physics & Astronomy Faculty Works
Measurements of the chirality (2π/pitch) in the chiral nematic phase and of a structural constant proportional to the chirality in the isotropic liquid for a system in which a helix inversion line crosses the chiral nematic to isotropic phase transition line are reported. While the chirality shows a strong temperature dependence in the chiral nematic phase, it loses all temperature dependence in the isotropic phase. In addition, the chirality in the isotropic phase is proportional to the chirality in the chiral nematic phase at the phase transition, and may in fact be continuous across the transition. While molecular field and …
Gender And Physical Science: A Hard Look At A Hard Science, Amy Lisa Graves
Gender And Physical Science: A Hard Look At A Hard Science, Amy Lisa Graves
Physics & Astronomy Faculty Works
No abstract provided.