Author Affiliations

S.R. Bolton,^#,*** U. Neukirch,^#,* D.S. Chemia,^#,* V.M. Axt,^#,** and L.J. Sham^#,†

^#Physics Department, Williams Col., Williamstown MA 01267, USA

^*Department of Physics, University of California and Materials Sciences Division, Lawrence Berkeley, Natl. Lab., 1 Cyclotron Rd., MS 2-346, Berkeley, CA 94720, USA

^**Inst. fuer Theorctische Physik II, Wcstfaelische Wilhelms-Universitat, Wilhelm Klemm Str. 10, Muenster 48149 Muenster, Germany

^†Department of Physics, Univ. of California-San Diego, La Jolla, CA 92093-03, USA

^*** sbolton@williams.edu