Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9854903 | Nuclear Physics B | 2005 | 18 Pages |
Abstract
We construct and investigate quantum fields induced on a d-dimensional dissipationless defect by bulk fields propagating in a (d+1)-dimensional space. All interactions are localized on the defect. We derive a unitary noncanonical quantum field theory on the defect, which is analyzed both in the continuum and on the lattice. The universal critical behavior of the underlying system is determined. It turns out that the O(N)-symmetric Ï4 theory, induced on the defect by massless bulk fields, belongs to the universality class of particular d-dimensional spin models with long-range interactions. On the other hand, in the presence of bulk mass the critical behavior crossovers to the one of d-dimensional spin models with short-range interactions.
Related Topics
Physical Sciences and Engineering
Mathematics
Mathematical Physics
Authors
Davide Fichera, Mihail Mintchev, Ettore Vicari,