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Spin connection and boundary states in a topological insulator
Spin connection boundary states topological insulator
2010/12/24
We study the surface resistivity of a three-dimensional topological insulator when the boundaries exhibit a non trivial curvature. We obtain an analytical solution for a spherical topological insulato...
Boundary conditions in the Dirac approach to graphene devices
Boundary conditions Dirac approach graphene devices
2010/12/27
We study a family of local boundary conditions for the Dirac problem corresponding to the continuum limit of graphene, both for nanoribbons and nanodots. We show that, among the members of such family...
Thermal momentum distribution from path integrals with shifted boundary conditions
Thermal momentum distribution path integrals shifted boundary conditions
2010/12/27
For a thermal field theory formulated in the grand canonical ensemble, the distribution of the total momentum is an observable characterizing the thermal state. We show that its cumulants are related...
Determinant representations of scalar products for the open XXZ chain with non-diagonal boundary terms
scalar products the open XXZ chain non-diagonal boundary terms
2010/12/24
With the help of the F-basis provided by the Drinfeld twist or factorizing F-matrix for the open XXZ spin chain with non-diagonal boundary terms, we obtain the determinant representations of the scala...
Drinfeld twists of the open XXZ chain with non-diagonal boundary terms
the open XXZ chain non-diagonal boundary terms
2010/12/24
The Drinfeld twists or factorizing F-matrices for the open XXZ spin chain with non-diagonal boundary terms are constructed. It is shown that in the F-basis the two sets of pseudo-particle creation op...