168 citations · 472 across the 10 of their papers we have counts for
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Edge Electron Gas
Walter Kohn, Ann E. Mattsson
The uniform electron gas, the traditional starting point for density-based many-body theories of inhomogeneous systems, is inappropriate near electronic edges. In its place we put…
Boundary Effects on Spectral Properties of Interacting Electrons in One Dimension
Sebastian Eggert, Henrik Johannesson, Ann Mattsson
The single electron Green's function of the one-dimensional Tomonaga-Luttinger model in the presence of open boundaries is calculated with bosonization methods. We show that the cr…
Spin Dynamics of the Triangular Heisenberg Antiferromagnet: A Schwinger Boson Approach
Ann Mattsson
We have analyzed the two-dimensional antiferromagnetic Heisenberg model on the triangular lattice using a Schwinger boson mean-field theory. By expanding around a state with local…
Frustrated Honeycomb Heisenberg Antiferromagnet: A Schwinger Boson Approach
Ann Mattsson, Per Fröjdh, Torbjörn Einarsson
We analyze the frustrated Heisenberg antiferromagnet defined on a honeycomb lattice using a Schwinger-boson mean-field theory. The spin-wave velocity and the susceptibility are pre…