A variational principle for the electron density using the exchange hole %26 its implications for N-representability

作者：Ayers Paul W^*; Cuevas Saavedra Rogelio; Chakraborty Debajit

来源：Physics Letters A, 2012, 376(6-7): 839-844.

DOI：10.1016/j.physleta.2012.01.028

We show that the exchange hole determines both the electron density and the number of electrons through a variational principle. An eigenvalue condition related to the exchange hole is also derived. These results provide N-representability constraints on the exchange hole and limit the forms of model exchange holes. Whether a similar principle holds for the exchange-correlation hole is an open question.

• 出版日期2012-1-30