2003/11/30 by E Smørgrav, E. Smorgrav, J Smiseth +5
Physics and Astronomy · #Black Holes and Theoretical Physics #Quantum many-body systems #Theoretical and Computational Physics #cond-mat.str-el #hep-lat
paper · pdf · doi:10.1209/epl/i2004-10192-7
published as Europhys.Lett. 68 (2004) 198 · RevTex4, 4 pages, 1 figure; v3: improvements and corrections made in the first part of the paper; references added. To be published in Europhysics Letters
arxiv created 2004/08/29 · openalex publication_date 2004/10/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
We study the effect of a Chern-Simons (CS) term in the phase structure of two different Abelian gauge theories. For the compact Maxwell-Chern-Simons theory, with the CS term properly defined, we obtain that for values g = n /2π of the CS coupling with n = ±1, ±2, the theory is equivalent to a gas of closed loops with contact interaction, exhibiting a phase transition in the 3 dXY universality class. We also employ Monte Carlo simulations to study the noncompact U (1) Abelian Higgs model with a CS term. Finite-size scaling of the third moment of the action yields critical exponents α and ν that vary continuously with the strength of the CS term, and a comparison with available analytical results is made.