### Abstract

We derive an algorithm which permits the calculation of our independent boson Hamiltonian for a jellium with a surface, which gives, when solved exactly, the same results as the random phase approximation. Applications to films and spheres are discussed in detail. The independent boson scheme is applied to the computation of the influence of the electron-hole pair excitations on the trajectory of a charged particle scattered by the metal surface. We show that the classical equation of motion of the particle, coupled to the quantized boson fields, is stochastic and must contain a peculiar force which depends on the final state of the quantum fields and on the past and the future of the trajectory. If the bosons are held at constant temperature, the motion of the particle is given by a quantum Langevin equation, which is derived here. The equation of motion derived here can be applied to both phonon-or electron-hole pair excitations.

Original language | English (US) |
---|---|

Pages (from-to) | 3307-3321 |

Number of pages | 15 |

Journal | The Journal of chemical physics |

Volume | 81 |

Issue number | 7 |

State | Published - 1984 |

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### ASJC Scopus subject areas

- Atomic and Molecular Physics, and Optics

### Cite this

*The Journal of chemical physics*,

*81*(7), 3307-3321.

**The use of an independent boson model to study the dynamic effects of electron excitations by a particle colliding with a metal surface.** / Leung, Kok-Ming; Schön, G.; Rudolph, P.; Metiu, Horia.

Research output: Contribution to journal › Article

*The Journal of chemical physics*, vol. 81, no. 7, pp. 3307-3321.

}

TY - JOUR

T1 - The use of an independent boson model to study the dynamic effects of electron excitations by a particle colliding with a metal surface

AU - Leung, Kok-Ming

AU - Schön, G.

AU - Rudolph, P.

AU - Metiu, Horia

PY - 1984

Y1 - 1984

N2 - We derive an algorithm which permits the calculation of our independent boson Hamiltonian for a jellium with a surface, which gives, when solved exactly, the same results as the random phase approximation. Applications to films and spheres are discussed in detail. The independent boson scheme is applied to the computation of the influence of the electron-hole pair excitations on the trajectory of a charged particle scattered by the metal surface. We show that the classical equation of motion of the particle, coupled to the quantized boson fields, is stochastic and must contain a peculiar force which depends on the final state of the quantum fields and on the past and the future of the trajectory. If the bosons are held at constant temperature, the motion of the particle is given by a quantum Langevin equation, which is derived here. The equation of motion derived here can be applied to both phonon-or electron-hole pair excitations.

AB - We derive an algorithm which permits the calculation of our independent boson Hamiltonian for a jellium with a surface, which gives, when solved exactly, the same results as the random phase approximation. Applications to films and spheres are discussed in detail. The independent boson scheme is applied to the computation of the influence of the electron-hole pair excitations on the trajectory of a charged particle scattered by the metal surface. We show that the classical equation of motion of the particle, coupled to the quantized boson fields, is stochastic and must contain a peculiar force which depends on the final state of the quantum fields and on the past and the future of the trajectory. If the bosons are held at constant temperature, the motion of the particle is given by a quantum Langevin equation, which is derived here. The equation of motion derived here can be applied to both phonon-or electron-hole pair excitations.

UR - http://www.scopus.com/inward/record.url?scp=0344792249&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0344792249&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0344792249

VL - 81

SP - 3307

EP - 3321

JO - Journal of Chemical Physics

JF - Journal of Chemical Physics

SN - 0021-9606

IS - 7

ER -