Effect of magnetic field on dynamic response function in Ising systems

Pawlak A., ERDEM R.

PHYSICS LETTERS A, vol.377, no.38, pp.2487-2493, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 377 Issue: 38
  • Publication Date: 2013
  • Doi Number: 10.1016/j.physleta.2013.07.033
  • Journal Name: PHYSICS LETTERS A
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2487-2493
  • Akdeniz University Affiliated: Yes

Abstract

As a continuation of our previously published work, we use the Nelson's method to study the effect of the magnetic field on the temperature-, frequency-, and momentum-dependent response function and dynamic correlation function in the Ising-type systems with relaxational dynamics. The scaling function is given within the renormalization group formalism at one-loop order for nonzero field. We show how the typical two-peak structure of the real part of response function changes with magnetic field. We discuss the deviations of the correlation function from the Gaussian expression. The Fisher-Langer maximum is also considered. (C) 2013 Elsevier B.V. All rights reserved.