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arXiv · 2309.11428

Off-shell selfenergy for 1-D Fermi liquids

Klaus Morawetz·Vinod Ashokan·Kare Narain Pathak·Neil Drummond
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Abstract

The selfenergy in Born approximation including exchange of interacting one-dimensional systems is expressed in terms of a single integral about the potential which allows a fast and precise calculation for any potential analytically. The imaginary part of the self energy as damping of single-particle excitations shows a rich structure of different areas limited by single-particle and collective excitation lines. The corresponding spectral function reveals a pseudogap, a splitting of excitation into holons and antiholons as well as bound states.

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Klaus Morawetz, Vinod Ashokan, Kare Narain Pathak, Neil Drummond. 2023-09-20. Off-shell selfenergy for 1-D Fermi liquids. https://doi.org/10.1007/s12043-024-02788-1

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