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Yao, Zhiyuan; Pollet, Lode; Prokof'ev, N.; Svistunov, B. (2016): Superfluid-insulator transition in strongly disordered one-dimensional systems. In: New Journal of Physics, Vol. 18, 045018
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Abstract

We present an asymptotically exact renormalization-group theory of the superfluid-insulator transition in one-dimensional (1D) disordered systems, with emphasis on an accurate description of the interplay between the Giamarchi-Schulz (instanton-anti-instanton) and weak-link (scratched-XY) criticalities. Combining the theory with extensive quantum Monte Carlo simulations allows us to shed new light on the ground-state phase diagram of the 1D disordered Bose-Hubbard model at unit filling.