Non-Local Space-Time Transformations Generated from the Ageing Algebra

  • Stoimen Stoimenov
  • Malte Henkel
Conference paper
Part of the Springer Proceedings in Mathematics & Statistics book series (PROMS, volume 36)


The ageing algebra is a local dynamical symmetry of many ageing systems, far from equilibrium, and with a dynamical exponent z = 2. Here, new representations for an integer dynamical exponent z = n are constructed, which act non-locally on the physical scaling operators. The new mathematical mechanism which makes the infinitesimal generators of the ageing algebra dynamical symmetries, is explicitly discussed for a n-dependent family of linear equations of motion for the order-parameter. Finite transformations are derived through the exponentiation of the infinitesimal generators and it is proposed to interpret them in terms of the transformation of distributions of spatio-temporal coordinates. The two-point functions which transform co-variantly under the new representations are computed, which quite distinct forms for n even and n odd. Depending on the sign of the dimensionful mass parameter, the two-point scaling functions either decay monotonously or in an oscillatory way towards zero.


Scaling Function Infinitesimal Generator Dynamical Symmetry Dynamical Exponent Finite Transformation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



Most of the work on this paper was done during the visits of S.S. at the Université Henri Poincaré Nancy I. S.S. is supported in part by the Bulgarian NSF grant DO 02-257.


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Copyright information

© Springer Japan 2013

Authors and Affiliations

  1. 1.Institute of Nuclear Research and Nuclear EnergyBulgarian Academy of SciencesSofiaBulgaria
  2. 2.Groupe de Physique Statistique, Département de Physique de la Matière et des Matériaux, Institut Jean LamourNancy UniversitéVandœuvre lès Nancy CedexFrance

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