One- plus two-body random matrix ensembles with spin: Results for pairing correlations

被引：11

作者：

Vyas, Manan ^{[1
]}

Kota, V. K. B. ^{[1
,2
]}

Chavda, N. D. ^{[3
]}

机构：

[1] Phys Res Lab, Ahmadabad 380009, Gujarat, India

[2] Laurentian Univ, Dept Phys, Sudbury, ON P3E 2C6, Canada

[3] Maharaja Sayajirao Univ Baroda, Fac Engn & Technol, Dept Appl Phys, Vadodara 390001, India

来源：

PHYSICS LETTERS A | 2009年 / 373卷 / 16期

关键词：

Interacting fermion systems; EGOE(1+2)-s; Pairing symmetry; Pair transfer strength sums; Peak spacing distributions; Mesoscopic systems; STATES; CHAOS;

D O I：

10.1016/j.physleta.2009.02.045

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

For EGOE(1 + 2)-s ensemble for fermions, in the strong coupling region, partial densities over pairing subspaces follow Gaussian form and propagation formulas for their centroids and variances are derived. Similarly for this ensemble: (i) pair transfer strength sums, a statistic for chaos, are shown to follow a simple form: (ii) a quantity used in conductance peak spacings analysis is shown to exhibit bimodal form when pairing is stronger than the exchange interaction. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：1434 / 1443

页数：10

共 36 条

[1] Disordered mesoscopic systems with interactions:: Induced two-body ensembles and the Hartree-Fock approach -: art. no. 045318 [J].