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Type: Artigo de periódico
Title: Statistical thermodynamic approach to vibrational solitary waves in acetanilide
Author: Vasconcellos, AR
Mesquita, MV
Luzzi, R
Abstract: We analyze the behavior of the macroscopic thermodynamic state of polymers, centering on acetanilide. The nonlinear equations of evolution for the populations and the statistically averaged field amplitudes of CO-stretching modes are derived. The existence of excitations of the solitary wave type is evidenced. The infrared spectrum is calculated and compared with the experimental data of Careri et al. [Phys. Rev. Lett. 51, 104 (1983)], resulting in a good agreement. We also consider the situation of a nonthermally highly excited sample, predicting the occurrence of a large increase in the lifetime of the solitary wave excitation. [S0031-9007(98)05407-6].
Country: EUA
Editor: American Physical Soc
Rights: aberto
Identifier DOI: 10.1103/PhysRevLett.80.2008
Date Issue: 1998
Appears in Collections:Unicamp - Artigos e Outros Documentos

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