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          Institute: MPI für Physik     Collection: MPI für Physik     Display Documents



ID: 544939.0, MPI für Physik / MPI für Physik
Construction and clustering properties of the 2-d non-linear
sigma-model form factors: O(3), O(4), large $n$ examples
Authors:Balog, J.; Weisz, P.
Date of Publication (YYYY-MM-DD):2007
Title of Journal:Nuclear Physics B
Journal Abbrev.:Nucl.Phys.B
Issue / Number:778
Start Page:259
End Page:309
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:Multi-particle form factors of local operators in integrable models in two dimensions seem to have the property that they factorize when one subset of the particles in the external states are boosted by a large rapidity with respect to the others. This remarkable property, which goes under the name of form factor clustering, was first observed by Smirnov in the O(3) non-linear sigma-model and has subsequently found useful applications in integrable models without internal symmetry structure. In this paper we conjecture the nature of form factor clustering for the general O(n) sigma-model and make some tests in leading orders of the 1/n expansion and for the special cases n=3,4.
Classification / Thesaurus:Field Theory
Comment of the Author/Creator:61 pages, LaTeX
External Publication Status:published
Document Type:Article
Communicated by:N.N.
Affiliations:MPI für Physik
Identifiers:LOCALID:MPP-2006-125
URL:http://www.slac.stanford.edu/spires/find/hep/www?r...
URL:http://arXiv.org/abs/hep-th/0701202
URL:http://publications.mppmu.mpg.de/?action=search&mp...
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