title: Critical behaviour of a O(n)-symmetric model with antisymmetric tensor order parameter: Four-loop approximation
metadata.name: dc.contributor.author
metadata.value: Lebedev, Nikita M.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Kompaniets, Mikhail V.
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2018-04-26T08:57:47Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2018-04-26T08:57:47Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2018-03
metadata.lang: -
metadata.name: dc.identifier.citation
metadata.value: Lebedev N.M., Kompaniets M. V. Critical behaviour of a O(n)-symmetric model with antisymmetric tensor order parameter: Four-loop approximation. Vestnik SPbSU. Physics and Chemistry. 2018. Vol. 5 (63), iss. 1. P. 20–31.
metadata.lang: en_GB
metadata.name: dc.identifier.other
metadata.value: 10.21638/11701/spbu04.2018.103
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/9487
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: The critical behavior of the O(n)-symmetric φ4 model with an antisymmetric tensor order parameter
  is studied by means of the renormalization group approach. Previously, this model was
  studied in the framework of the three-loop approximation by means of ε-expansion with conformal
  Borel resummation technique and pseudo-ε-expansion. It was shown that the results of
  these approaches are in qualitative agreement with each other, however, the numerical values
  of the critical indices can differ quite significantly. Moreover, the question of the sensitivity of
  even qualitative results to the accounting of the higher orders of perturbation theory remained
  open. In the present paper, the RG functions and critical indices of the model are calculated up
  to four-loop accuracy within both approaches. Their analysis shows that the results of applying
  different approaches are qualitatively consistent both with each other and with the results of the
  three-loop analysis.
metadata.lang: en_GB
metadata.name: dc.description.sponsorship
metadata.value: Н. М. Лебедев выражает благодарность РФФИ за финансовую поддержку в рамках гранта
  16-32-00086 мол-а.
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: ru
metadata.lang: en_GB
metadata.name: dc.publisher
metadata.value: St Petersburg State University
metadata.lang: en_GB
metadata.name: dc.relation.ispartofseries
metadata.value: Vestnik of St Petersburg University. Physics and Chemistry;Volume 5(63); Issue 1
metadata.lang: -
metadata.name: dc.subject
metadata.value: renormalization group
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: critical behavior
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Critical behaviour of a O(n)-symmetric model with antisymmetric tensor order parameter: Four-loop approximation
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: 03-Lebedev.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/9487/1/03-Lebedev.pdf
resources.format: Adobe PDF
resources.size: 288,22 kB