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Random walk approximation in a chiral Yukawa-model and global symmetries
This item is provided by the institution :
National Technical University of Athens
Repository :
Digital Library of National Technical University of Athens | Dspace@NTUA
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ΕΚΤ item type
Journal part
(EN)
Scientific article
(EN)
EKT year
1990
(EN)
EKT historical period
Title
Random walk approximation in a chiral Yukawa-model and global symmetries (EN)
Creator
Koutsoumbas, G (EN)
Montvay, I (EN)
Farakos, K (EN)
Description
The fermion propagator is investigated in a chiral Yukawa-model with explicit mirror fermions applying the random walk approximation to the hopping parameter expansion. It is shown that the global SU(2)L⊗SU(2)R symmetry breaking due to the mass splitting within fermion doublets does influence the critical behaviour of the fermion spectrum in the continuum limit. In particular, in the case of a mirror pair of split doublets, where SU(2)L⊕SU(2)R is broken to SU(2)L, no evidence is found for a dynamical spectrum doubling at infinitely strong bare Yukawa-couplings, in contrast to the case with degenerate doublets and SU(2)L⊗SU(2)R symmetry. © 1990 Springer-Verlag. (EN)
Type
journalArticle (EN)
Subject
Random Walk (EN)
Symmetry Breaking (EN)
Physics, Particles & Fields (EN)
Global Symmetries (EN)
Degeneration (EN)
Spectrum (EN)
Provider
National Technical University of Athens
Repository / collection
Digital Library of National Technical University of Athens | Dspace@NTUA
Subcollections
Κεντρική Βιβλιοθήκη Ε.Μ.Π.
Ιδρυματικό Αποθετήριο
Δημοσιεύσεις μελών Δ.Ε.Π. σε περιοδικά
Journal
Zeitschrift für Physik C Particles and Fields (EN)
Language
English
Issued
1990 (EN)
Identifier
http://hdl.handle.net/123456789/10289
47 (EN)
641 (EN)
4 (EN)
0170-9739 (EN)
10.1007/BF01552331 (EN)
645 (EN)
ISI:A1990DW80100018 (EN)
Publisher
Springer-Verlag (EN)
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