153 citations · 1.2k across the 85 of their papers we have counts for
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Corrections to the RPA Dielectric Function Induced by Fluctuations in the Momentum Distribution
Girish S. Setlur, Yia-Chung Chang
In this article, we introduce a new dielectric function that is different even from the generalised RPA, first introduced in cond-mat/9810043, in that it pays attention to fluctuat…
Computing Number Fluctuations
Girish S. Setlur, Yia-Chung Chang
Here we try and delienate the properties of the function that corresponds to fluctuations in the momentum distribution. The quantity denoted by is quite an interesti…
Band structures and optical properties of GaInAs quantum wires grown by strain-induced lateral ordering
Liang-Xin Li, Yia-Chung Chang
Band structures and optical matrix elements of strained multiple quantum-wires (QWR's) are investigated theoretically via the effective bond-orbital model, which takes into account…
Exact Optical Dielectric Function of a Nearly Homogeneous Solid
Girish S. Setlur, Yia-Chung Chang
Based on an exactly solvable model of a nearly homogeneous solid (jellium+phonons), we compute the optical dielectric function exactly at zero temperature in any number of spatial…
Fine structure of excitons in CuO
G. M. Kavoulakis, Yia-Chung Chang, Gordon Baym
Three experimental observations on 1s-excitons in CuO are not consistent with the picture of the exciton as a simple hydrogenic bound state: the energies of the 1s-excitons dev…