title: Positronium lifetime in polymers.
abstract: A model describing the relationship between the orthopositronium lifetime and the volume of a void, located in a synthetic zeolite, is analyzed. Our idea, which allows us to take into account the effects of temperature, comprises the introduction of a non-Hermitian term in the Hamiltonian, which accounts for the annihilation of the orthopositronium. The predictions of the present model are also confronted against an already known experimental result.
authors.affiliation: Department of Physics, Universidad Aútonoma Metropolitana-Iztapalapa, Apartado Postal 55-534, Apartado Postal 09340, México, Distrito Federal, Mexico. acq@xanum.uam.mx
authors.forename: Abel
authors.initials: A
authors.lastname: Camacho