NONCANONICAL-TRANSFORMATION APPROACH TO THE X-RAY-EDGE PROBLEM

被引：15

作者：

PERAKIS, IE ^{[1
]}

CHANG, YC ^{[1
]}

机构：

[1] UNIV ILLINOIS,MAT RES LAB,URBANA,IL 61801

来源：

PHYSICAL REVIEW B | 1991年 / 44卷 / 11期

关键词：

D O I：

10.1103/PhysRevB.44.5877

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An exact approach to the problem of x-ray-edge singularities is presented. We devise a transformation that eliminates from the Hamiltonian the process of creation of virtual electron-hole pairs and makes it possible to apply a rigid Fermi-sea picture. The transformed Hamiltonian can be diagonalized exactly. We demonstrate the power of this approach by obtaining the exact analytic form for the emission spectrum in the infinite-hole-mass case.

引用

页码：5877 / 5880

页数：4

共 28 条

[1] INFRARED CATASTROPHE IN FERMI GASES WITH LOCAL SCATTERING POTENTIALS [J].

ANDERSON, PW .

PHYSICAL REVIEW LETTERS, 1967, 18 (24) :1049-&

[2]

BISHOP RF, 1978, PHYS REV B, V17, P3757, DOI 10.1103/PhysRevB.17.3757

[3] INFRARED CATASTROPHY AND EXCITONS IN X-RAY-SPECTRA OF METALS [J].

COMBESCOT, M ;

NOZIERES, P .

JOURNAL DE PHYSIQUE, 1971, 32 (11-1) :913-+

[4] MANY-ELECTRON SINGULARITY IN X-RAY PHOTOEMISSION AND X-RAY LINE SPECTRA FROM METALS [J].

DONIACH, S ;

SUNJIC, M .

JOURNAL OF PHYSICS PART C SOLID STATE PHYSICS, 1970, 3 (02) :285-&

[5]

ILIAS E, 1991, PHYS REV B, V43, P12556

[6] X-RAY-SPECTRA AND RESPONSE OF CONDUCTION ELECTRONS TO A POTENTIAL CHANGE - PHASE-SHIFT OPERATOR APPROACH [J].

LLOYD, P .

JOURNAL OF PHYSICS F-METAL PHYSICS, 1971, 1 (05) :728-738

[7] CORE-HOLE GREEN-FUNCTION - DISPERSION THEORY [J].

MAHAN, GD .

PHYSICAL REVIEW B, 1982, 25 (08) :5021-5031

[8] EXCITONS IN METALS - INFINITE HOLE MASS [J].

MAHAN, GD .

PHYSICAL REVIEW, 1967, 163 (03) :612-&

[9] EXCITONS IN DEGENERATE SEMICONDUCTORS [J].

MAHAN, GD .

PHYSICAL REVIEW, 1967, 153 (03) :882-+

[10] LOCALIZED DYNAMIC PERTURBATIONS IN METALS [J].

MULLERHA.E ;

RAMAKRIS.TV ;

TOULOUSE, G .

PHYSICAL REVIEW B, 1971, 3 (04) :1102-&

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