Spinless Fermionic ladders in a magnetic field: Phase Diagram
classification
❄️ cond-mat.str-el
keywords
phasetransitionsfieldmagneticphasesspinlessberezinskii-kosterlitz-thoulessdiagram
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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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