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Abstract
Interactions between electrons in one dimension are fully described at low energies by only a few parameters of the Tomonaga-Luttinger model, which is based on linearization of the spectrum. We consider a model of spinless fermions with short-range interaction via the Bethe-Ansatz technique and show that a Luttinger parameter emerges in an observable beyond the low-energy limit. A distinct feature of the spectral function, the edge that marks the lowest possible excitation energy for a given momentum, is parabolic for arbitrary momenta and the prefactor is a function of the Luttinger parameter, K.
Original language | English |
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Article number | 115142 |
Number of pages | 6 |
Journal | Physical Review B |
Volume | 88 |
Issue number | 11 |
DOIs | |
Publication status | Published - 26 Sept 2013 |
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Dive into the research topics of 'Luttinger parameters of interacting fermions in one dimension at high energies'. Together they form a unique fingerprint.Projects
- 1 Finished
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Beyond Luttinger Liquids-Spin-Charge Separation at High Excitation Energies
Schofield, A.
Engineering & Physical Science Research Council
31/10/12 → 29/04/15
Project: Research Councils