Critical Exponents Curve for Semilinear System of Weakly Coupled Effectively Damped Waves with Different Power Nonlinearities


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Authors: A. M. DJAOUTI

DOI: 10.46793/KgJMat2503.375D

Abstract:

In this paper we prove a blow-up result for the semi linear system of weakly coupled effectively damped waves with different power nonlinearities




utt Δu + b(t)ut = |v|p, v tt Δv + b(t)vt = |u|q,


u(0,x) = u0(x), ut(0,x) = u1(x), v(0,x) = v0(x), vt(0,x) = v1(x),

where b(t) will be explained in detail in the next sections. We apply the so called “test function method” to determine the range for the exponents p,q > 0 in the nonlinear terms in which local in time existence may not globally prolonged with respect to the t variable under suitable integral sign assumptions for the Cauchy data u0,u1,v0,v1. Since we prove the blow-up in a complementary range for powers of the nonlinear terms to that for the global existence of small data solutions (see [?]), the main blow-up of this paper is optimal.



Keywords:

Weakly coupled hyperbolic systems, damped wave equations, Cauchy problem, blow up, effective dissipation.



References:

[1]   M. D’Abbicco, A new critical exponent for the heat and damped wave equations with nonlinear memory and not integrable data, in: M. Cicognani, D. Del Santo, A. Parmeggiani and M. Reissig (Eds.), Anomalies in Partial Differential Equations, Springer, 2021. https://doi.org/10.1007/978-3-030-61346-4_9

[2]   M. D’Abbicco, S. Lucente and M. Reissig, Semilinear wave equations with effective damping, Chin. Ann. Math. 34B(3) (2013), 345–380. https://doi.org/10.1007/s11401-013-0773-0

[3]   M. D’Abbicco and S. Lucente, A modified test function method for damped wave equations, Adv. Nonlinear Stud. 13(4) (2013), 867–892. https://doi.org/10.1515/ans-2013-0407

[4]   A. M. Djaouti, On the benefit of different additional regularity for the weakly coupled systems of semilinear effectively damped waves, Mediterr. J. Math. 15(115) (2018). https://doi.org/10.1007/s00009-018-1173-1

[5]   A. M. Djaouti and M. Reissig, Weakly coupled systems of semilinear effectively damped waves with different time-dependent coefficients in the dissipation terms and different power nonlinearities, in: M. D’Abbicco, M. Ebert, V. Georgiev and T. Ozawa (Eds.), New Tools for Nonlinear PDEs and Application, Birkhäuser, Cham, 2019. https://doi.org/10.1007/978-3-030-10937-0_3

[6]   A. M. Djaouti, Modified different nonlinearities for weakly coupled systems of semilinear effectively damped waves with different time-dependent coefficients in the dissipation terms, Adv. Difference Equ. 66 (2021). https://doi.org/10.1186/s13662-021-03215-0

[7]   A. M. Djaouti and M. Reissig, Weakly coupled systems of semilinear effectively damped waves with time-dependent coefficient, different power nonlinearities and different regularity of the data, Nonlinear Anal. 175 (2018), 28–55. https://doi.org/10.1016/j.na.2018.05.006

[8]   M. R. Ebert and M. Reissig, Methods for Partial Differential Equations, Birkhauser, 2018.

[9]   N. Hayashi, E. I. Kaikina and P. I. Naumkin, Damped wave equation with super critical nonlinearities, Differential Integral Equations 17 (2004), 637–652. https://doi.org/die/1356060352

[10]   N. Hayashi, E. I. Kaikina and P. I. Naumkin, Damped wave equation in the subcritical case, J. Differential Equations 207 (2004), 161–194. https://doi.org/10.1016/j.jde.2004.06.018

[11]   N. Hayashi, E. I. Kaikina and P. I. Naumkin, On the critical nonlinear damped wave equation with large initial data, J. Math. Anal. Appl. 334 (2007), 1400–1425. https://doi.org/10.1016/j.jmaa.2007.01.021

[12]   T. Hosono and T. Ogawa, Large time behavior and Lp Lq estimate of solutions of 2- dimensional nonlinear damped wave equations, J. Differential Equations 203 (2004), 82–118. https://doi.org/10.1016/j.jde.2004.03.034

[13]   R. Ikehata, Diffusion phenomenon for linear dissipative wave equations in an exterior domain, J. Differential Equations 186 (2002), 633–651. https://doi.org/10.1016/S0022-0396(02)00008-6

[14]   R. Ikehata and K. Nishihara, Diffusion phenomenon for second order linear evolution equations, Studia Math. 158 (2003), 153–161. https://doi.org/10.4064/sm158-2-4

[15]   R. Ikehata, K. Nishihara and H. Zhao, Global asymptotics of solutions to the Cauchy problem for the damped wave equation with absorption, J. Differential Equations 226 (2006), 1–29. https://doi.org/10.1016/j.jde.2006.01.002

[16]   R. Karch, Selfsimilar profiles in large time asymptotic of solutions to damped wave equations, Studia Math. 143 (2000), 175–197. https://doi.org/10.4064/sm-143-2-175-197

[17]   S. Kawashima, M. Nakao and K. Ono, On the decay property of solutions to the Cauchy problem of the semilinear wave equation with a dissipative term, J. Math. Soc. Japan 47 (1995), 617–653. https://doi.org/10.2969/jmsj/04740617

[18]   J. Lin, K. Nishihara and J. Zhai, Critical exponent for the semilinear wave equation with time-dependent damping, Discrete Contin. Dyn. Syst. 12(32) (2012), 4307–4320. https://doi.org/10.3934/dcds.2012.32.4307

[19]   E. Mitidieri and S. I. Pohozaev, A priori estimates and blow-up of solutions to nonlinear partial differential equations and inequalities, Proc. Steklov Inst. Math. 3(234) (2001), 3–383.

[20]   T. Narazaki, LpLq estimates for damped wave equations and their applications to semi-linear problem, J. Math. Soc. Japan 56 (2004). https://doi.org/585--626.10.2969/jmsj/1191418647

[21]   K. Nishihara, LpLq estimates of solutions to the damped wave equation in 3-dimensional space and their application, Math. Z. 244 (2003), 631–649. https://doi.org/10.1007/s00209-003-0516-0

[22]   K. Nishihara, LpLq Global asymptotics for the damped wave equation with absorption in higher dimensional space, J. Math. Soc. Japan 58 (2006), 805–836. https://doi.org/10.2969/jmsj/1156342039

[23]   K. Nishihara and H. Zhao, Decay properties of solutions to the Cauchy problem for the damped wave equation with absorption, J. Math. Anal. Appl. 313 (2006), 598–610. https://doi.org/10.1016/j.jmaa.2005.08.059

[24]    K. Nishihara and Y. Wakasugi, Critical exponent for the Cauchy problem to the weakly coupled wave system, Nonlinear Analysis 108 (2014), 249–259. https://doi.org/10.1016/j.na.2014.06.001

[25]   F. Sun and M. Wang, Existence and nonexistence of global solutions for a nonlinear hyperbolic system with damping, Nonlinear Analysis 66 (2007), 2889–2910. https://doi.org/10.1016/j.na.2006.04.012

[26]    G. Todorova and B. Yordanov, Critical exponent for a nonlinear wave equation with damping, J. Differential Equations 174 (2001), 464–489. https://doi.org/10.1006/jdeq.2000.3933

[27]   J. Wirth, Wave equations with time-dependent dissipation II, Effective dissipation, J. Differential Equation 232 (2007), 74–103. https://doi.org/10.1016/j.jde.2006.06.004

[28]   Q. S. Zhang, A blow-up result for a nonlinear wave equation with damping: the critical case, C. R. Math. Acad. Sci. Paris 333 (2001), 109–114. https://doi.org/10.1016/S0764-4442(01)01999-1

[29]   Y. Zhou, A blow-up result for a nonlinear wave equation with damping and vanishing initial energy in n, Appl. Math. Lett. 18 (2005), 281–286. https://doi.org/10.1016/j.aml.2003.07.018