Second quantization of anyons and spin-anyon duality

Abstract

Anyons exhibit a non-trivial interplay between local exclusion rules and non-local braiding and exchange phases, making a consistent commutation algebra and second-quantized formulation challenging. We develop an algebraic framework for Abelian anyons in one dimension with statistical phase $\hat{I}¸$ = $\ddot{I}€$/N that enforces a finite on-site occupancy of N-1 anyons with the exchange phase $\hat{I}¸$ between different sites. Moreover, we introduce an exact Jordan-Wigner duality between $\ddot{I}€$/3 anyons and spin-1 operators, allowing us to map a tight-binding anyon model to an XY-like spin-1 model. The model exhibits anyon-density-dependent flux, incompressible or gapless regions, and critical points with level crossings that appear as discontinuities in ground-state currents, momenta, fidelities, and correlation functions. Our second-quantization formalism establishes a novel spin anyon duality, offering a conceptually new route to realize anyons from spin Hamiltonians and to engineer corresponding device architectures.

11 pages, 8 figures