Renormalization group flow in large N-c

Meyer J., Schwenzer K. O., Pirner H., Deandrea A.

PHYSICS LETTERS B, cilt.526, ss.79-89, 2002 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 526
  • Basım Tarihi: 2002
  • Doi Numarası: 10.1016/s0370-2693(01)01482-4
  • Dergi Adı: PHYSICS LETTERS B
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.79-89
  • İstanbul Üniversitesi Adresli: Hayır

Özet

We calculate renormalization group flow equations for the linear sigma-model in large N-c approximation. The flow equations decouple and can be solved analytically. The solution is equal to a self consistent solution of the NJL model in the same approximation, which shows that flow equations are a promising method to extend the calculation to higher order in 1/N-c. Including explicit chiral symmetry breaking, the large N-c approximation describes physics reasonably well. We further compare the analytic solution to the usually used polynomial truncation and find consistency. (C) 2002 Elsevier Science B.V. All rights reserved.