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Calabrese, Pasquale and Martín Mayor, Víctor and Pelissetto, Andrea and Vicari, Ettore
(2003)
*Dynamic structure factor of the three-dimensional Ising model with purely relaxational dynamics.*
Physical review E, 68
(1 (2)).
ISSN 1539-3755

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Official URL: http://dx.doi.org/10.1103/PhysRevE.68.016110

## Abstract

We compute the dynamic structure factor for the three-dimensional Ising model with a purely relaxational dynamics (model A). We perform a perturbative calculation in the e expansion, at two loops in the high temperature phase and at one loop in the temperature magnetic-field plane, and a Monte Carlo simulation in the high-temperature phase. We find that the dynamic structure factor is very well approximated by its mean-field Gaussian form up to moderately large values of frequency ω and momentum k. In the region we can investigate, kξ≤5, ωϮ≤10, where ξ is the correlation length and Ϯ is the zero-momentum autocorrelation time, deviations are at most of a few percent.

Item Type: | Article |
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Additional Information: | © 2003 The American Physical Society. This work was partly supported by MCyT (Spain), Project Nos. FPA2001-1813 and FPA2000-0956. |

Uncontrolled Keywords: | Dispersion-theory approach; Critical-point scattering; Renormalization-group; Critical exponents; Field-theory; Monte-Carlo; Systems; Equation; State; Temperature. |

Subjects: | Sciences > Physics > Physics-Mathematical models |

ID Code: | 46435 |

Deposited On: | 09 Mar 2018 09:23 |

Last Modified: | 09 Mar 2018 09:23 |

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