Two loop critical fluctuation dissipation ratio for the relaxational dynamics of the O(N) Landau-Ginzburg Hamiltonian - INSPIRE

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Two loop critical fluctuation dissipation ratio for the relaxational dynamics of the O(N) Landau-Ginzburg Hamiltonian

Pasquale Calabrese
(
- Pisa, Scuola Normale Superiore and
- INFN, Pisa
)
,
Andrea Gambassi
(
- Pisa, Scuola Normale Superiore and
- INFN, Pisa
)

2002

19 pages

Published in:

Phys.Rev.E 66 (2002) 066101

e-Print:

cond-mat/0207452 [cond-mat]

DOI:

10.1103/PhysRevE.66.066101

View in:

ADS Abstract Service

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Abstract: (arXiv)

The off-equilibrium purely dissipative dynamics (Model A) of the O(N) vector model is considered at criticality in an

\epsilon = 4- d > 0

up to O(

\epsilon^2

). The scaling behavior of two-time response and correlation functions at zero momentum, the associated universal scaling functions, and the nontrivial limit of the fluctuation-dissipation ratio are determined in the aging regime.

Note:

21 pages, 6 figures. Discussion enlarged and two figures added. Final version accepted for publication in Phys. Rev. E Subj-class: Statistical Mechanics Journal-ref: Phys. Rev. E 66, 066101 (2002)

References(20)

Figures(6)

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