Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2011-10-24
Phys. Rev. B 85, 035136 (2012)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
17 pages, 4 figures; corresponding to published version
Scientific paper
10.1103/PhysRevB.85.035136
We provide analytic expressions for the Green's functions in position-frequency space as well as for the tunneling density of states of various Luttinger liquids at zero temperature: the standard spinless and spinful Luttinger liquids, the helical Luttinger liquid at the edge of a topological insulator, and the Luttinger liquid that appears either together with an ordering transition of nuclear spins in a one-dimensional conductor, or in spin-orbit split quantum wires in an external magnetic field. The latter system is often used to mimic a helical Luttinger liquid, yet we show here that it exhibits significantly different response functions and, to discriminate, we call it the spiral Luttinger liquid. We give fully analytic results for the tunneling density of state of all the Luttinger liquids as well as for most of the Green's functions. The remaining Green's functions are expressed by simple convolution integrals between analytic results.
Bena Cristina
Braunecker Bernd
Simon Pascal
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