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Spinless Fermionic ladders in a magnetic field: Phase Diagram

Sam T. Carr·Boris N. Narozhny·Alexander A. Nersesyan
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Abstract

The system of interacting spinless fermions hopping on a two-leg ladder exhibits a series of quantum phase transitions when subjected to an external magnetic field. At half filling, these are either U(1) Gaussian phase transitions between two phases with distinct types of long-range order or Berezinskii-Kosterlitz-Thouless transitions between ordered and gapless phases.

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Sam T. Carr, Boris N. Narozhny, Alexander A. Nersesyan. 2006-01-09. Spinless Fermionic ladders in a magnetic field: Phase Diagram. https://doi.org/10.1103/physrevb.73.195114

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