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Seminário de Mecânica Estatística

O seminário de Mecânica Estatística será apresentado na próxima segunda-feira, 27/04/2015, às 11:00h, na sala A5-01 do Instituto de Física.

Título: Role of temperature on the global response in the interface growth
dynamics.

Apresentador: Thiago Albuquerque de Assis (UFBA - prof. visitante UFF)

Resumo:
The global response of the sudden changes in the interface growth dynamics is discussed using models of the Kardar-Parisi-Zhang (KPZ) and Villain-Lai-Das Sarma (VLDS) classes during their growth regimes in 2 + 1 dimensions.
We introduce scaling arguments and present simulation results to predict the relaxation of the difference in the squared global roughness of the perturbed and the unperturbed interfaces. Following the same lines of previous works [1-3] discussed in previous talk, we propose an asymptotic scaling  which includes the temperature effects in the scaling of the correlation length. Interestingly, our results indicate a crossover from a dynamic where the plateau formation prevails to a dynamic with the scaling of the correlation length of the corresponding VLDS model [4]. Finally, we discuss our results making a parallel with experiments for KPZ-VLDS case that may be viewed as a potential application.

[1] Y.-L. Chou, M. Pleimling, and R. K. P. Zia, Phys. Rev. E \textbf{80}, 061602 (2009)
[2] Y.-L. Chou and M. Pleimling, J. Stat. Mech. P08007 (2010)
[3] T. A. de Assis and F. D. A. Aar\~{a}o Reis, Phys. Rev. E \textbf{89}, 062405 (2014)
[4] F. D. A. Aar\~{a}o Reis, Phys. Rev. E \textbf{81} 041605 (2010)