Rasolt, M.Geldart, D. J. W.2013-06-192013-06-191986-07/15Rasolt, M., and D. J. W. Geldart. 1986. "Exchange and correlation energy in a nonuniform fermion fluid." Physical Review B (Condensed Matter) 34(2): 1325-8. Copyright © 1986 American Physical Society.0163-1829http://dx.doi.org/10.1103/PhysRevB.34.1325http://hdl.handle.net/10222/24992Recent results for the surface energy of jelliumlike surfaces are investigated within the functional-density formalism. These results along with first-principles considerations support the contention that the first gradient coefficient of the exchange and correlation energy, in its unmodified form, is the proper nonlocal correction to the local-density approximation in extended systemsExchange interactions (electron)Fermion systemsJelliumarticle3421325