Fermi edge singularities for excitons created in front of a metal
GPS, Université Denis Diderot and Université
Pierre et Marie Curie, CNRS Tour 23, 2 place Jussieu, 75251
Paris Cedex 05, France
Accepted: 3 December 2001
We predict significant changes in the absorption spectrum of excitons created close to a metal. These changes, which include shifts, splittings and tails on the high-energy sides, result from many-body interactions between the metal Fermi sea and the suddenly photocreated electron-hole pair. They have thus the same origin as Fermi edge singularities. Similar changes are expected in the optical transitions of atoms trapped close to a metallic mirror.
PACS: 71.10.Ca – Electron gas, Fermi gas / 71.35.-y – Excitons and related phenomena / 71.45.-d – Collective effects
© EDP Sciences, 2002