Ground State Energy of the One-Component Charged Bose Gas

Details Ground State Energy of the One-Component Charged Bose Gas Ground State Energy of the One-Component Charged Bose Gas

2000-07-26

arxiv.org/abs/cond-mat/0007425v3

Physics

Condensed Matter

Statistical Mechanics

38 pages latex. Typos corrected.Lemma 6.2 changed

Scientific paper

10.1007/s002200000353

The model considered here is the `jellium' model in which there is a uniform, fixed background with charge density $-e\rho$ in a large volume $V$ and in which $N=\rho V$ particles of electric charge $+e$ and mass $m$ move --- the whole system being neutral. In 1961 Foldy used Bogolubov's 1947 method to investigate the ground state energy of this system for bosonic particles in the large $\rho$ limit. He found that the energy per particle is $-0.402 r_s^{-3/4} {me^4}/{\hbar^2}$ in this limit, where $r_s=(3/4\pi \rho)^{1/3}e^2m/\hbar^2$. Here we prove that this formula is correct, thereby validating, for the first time, at least one aspect of Bogolubov's pairing theory of the Bose gas

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