Bull. Korean Math. Soc. 2020; 57(2): 281-294
Online first article February 27, 2020 Printed March 31, 2020
https://doi.org/10.4134/BKMS.b190190
Copyright © The Korean Mathematical Society.
Yaojun Ye
Zhejiang University of Science and Technology
The initial-boundary value problem for a class of semilinear Klein-Gordon equation with logarithmic nonlinearity in bounded domain is studied. The existence of global solution for this problem is proved by using potential well method, and obtain the exponential decay of global solution through introducing an appropriate Lyapunov function. Meanwhile, the blow-up of solution in the unstable set is also obtained.
Keywords: Klein-Gordon equation, logarithmic nonlinearity, global solution, exponential decay, blow-up
MSC numbers: Primary 35L05, 35L10, 35B40
Supported by: This work was financially supported by Natural Science Foundation of Zhejiang Province (No. LY17A010009).
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