Open access
Date
2021-03Type
- Journal Article
Abstract
We show that four-dimensional systems may exhibit a topological phase transition analogous to the well-known Berezinskii-Kosterlitz-Thouless vortex unbinding transition in two-dimensional systems. We study a suitable generalization of the sine-Gordon model in four dimensions and the renormalization group flow equation of its couplings, showing that the critical value of the frequency is the square of the corresponding value in 2D. The value of the anomalous dimension at the critical point is determined (η=1/32) and a conjecture for the universal jump of the superfluid stiffness (4/π2) presented. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000469137Publication status
publishedExternal links
Journal / series
Nuclear Physics BVolume
Pages / Article No.
Publisher
ElsevierOrganisational unit
03355 - Graf, Gian Michele / Graf, Gian Michele
03355 - Graf, Gian Michele / Graf, Gian Michele
03355 - Graf, Gian Michele / Graf, Gian Michele
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