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- University of MichiganUS42 papers
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16 papers · 1 filter
RPA Analysis of a Two-orbital Model for the BiS2-based Superconductors
George Martins, Adriana Moreo, Elbio Dagotto
The random-phase approximation (RPA) is here applied to a two-orbital model for the BiS2-based superconductors that was recently proposed by Usui et al., arXiv:1207.3888. Varying t…
Combinatorics of certain higher -Catalan polynomials: chains, joint symmetry, and the Garsia-Haiman formula
Kyungyong Lee, Li Li, Nicholas A. Loehr
The higher -Catalan polynomial can be defined combinatorially as a weighted sum of lattice paths contained in certain triangles, or algebraically as a complic…
On natural maps from strata of quiver Grassmannians to ordinary Grassmannians
Kyungyong Lee, Li Li
Caldero and Zelevinsky studied the geometry of quiver Grassmannians for the Kronecker quiver and computed their Euler characteristics by examining natural stratification of quiver…
Some remarks on the hyperelliptic moduli of genus 3
T. Shaska
In 1967, Shioda \cite{Shi1} determined the ring of invariants of binary octavics and their syzygies using the symbolic method. We discover that the syzygies determined in \cite{Shi…
Transport properties of a two impurity system: a theoretical approach
I. J. Hamad, L. Costa Ribeiro, G. B. Martins +1
A system of two interacting cobalt atoms, at varying distances, was studied in a recent scanning tunneling microscope experiment by Bork et. al.[Nature Phys. 7, 901 (2011)]. We pro…
Greedy elements in rank 2 cluster algebras
Kyungyong Lee, Li Li, Andrei Zelevinsky
A lot of recent activity in the theory of cluster algebras has been directed towards various constructions of "natural" bases in them. One of the approaches to this problem was dev…