UNIGE document Scientific Article
previous document  unige:87809  next document
add to browser collection

Superfluid/Bose-glass transition in one dimension

Ristivojevic, Zoran
Petković, Aleksandra
Le Doussal, Pierre
Published in Physical Review. B, Condensed Matter. 2014, vol. 90, no. 12, p. 125144
Abstract We consider a one-dimensional system of interacting bosons in a random potential. At zero temperature, it can be either in the superfluid or in the insulating phase. We study the transition at weak disorder and moderate interaction. Using a systematic approach, we derive the renormalization group equations at two-loop order and discuss the phase diagram. We find the universal form of the correlation functions at the transitions and compute the logarithmic corrections to the main universal power-law behavior. In order to mimic large density fluctuations on a single site, we study a simplified model of disordered two-leg bosonic ladders with correlated disorder across the rung. Contrarily to the single-chain case, the latter system exhibits a transition between a superfluid and a localized phase where the exponents of the correlation functions at the transition do not take universal values.
Full text
Article (Published version) (371 Kb) - document accessible for UNIGE members only Limited access to UNIGE
Other version: http://link.aps.org/doi/10.1103/PhysRevB.90.125144
Research group Groupe Giamarchi
(ISO format)
RISTIVOJEVIC, Zoran et al. Superfluid/Bose-glass transition in one dimension. In: Physical Review. B, Condensed Matter, 2014, vol. 90, n° 12, p. 125144. https://archive-ouverte.unige.ch/unige:87809

71 hits

0 download


Deposited on : 2016-09-27

Export document
Format :
Citation style :