Path Integral Monte Carlo Simulations Of Positronium Annihilation: From Micropores To Mesopores

Authors

Amy Lisa Graves, Swarthmore CollegeFollow
P. A. Sterne

Document Type

Article

Publication Date

3-1-2006

Published In

Physical Review B

Abstract

Path integral Monte Carlo (PIMC) can reproduce the results of simple analytical calculations in which a single quantum particle is used to represent positronium within an idealized spherical pore. Our calculations improve on this approach by explicitly treating the positronium as a two-particle e(-), e(+) system interacting via the Coulomb interaction. We study the lifetime and the internal contact density, kappa, which controls the self-annihilation behavior for positronium in model spherical pores as a function of temperature and pore size. We compare the results with both PIMC and analytical calculations for a single-particle model.

Comments

This work is freely available courtesy of the American Physical Society.

Recommended Citation

Amy Lisa Graves and P. A. Sterne. (2006). "Path Integral Monte Carlo Simulations Of Positronium Annihilation: From Micropores To Mesopores". Physical Review B. Volume 73, Issue 9. DOI: 10.1103/PhysRevB.73.094106
https://works.swarthmore.edu/fac-physics/95