This paper explores some novel solutions to the generalized Schrödinger-Boussinesq(gSBq)equations,which describe the interaction between complex short wave and real long wave envelope.In order to derive some nove...This paper explores some novel solutions to the generalized Schrödinger-Boussinesq(gSBq)equations,which describe the interaction between complex short wave and real long wave envelope.In order to derive some novel complex hyperbolic and complex trigonometric function solutions,the sine-Gordon equation method(sGEM)is applied to the gSBq equations.Novel complex hyperbolic and trigonometric function solutions are expressed by the dark,bright,combo dark-bright,W-shaped,M-shaped,singular,combo singular,and periodic wave solutions.The accuracy of the explored solitons is examined under the back substitution to the corresponding equations via the symbolic computation software Maple.It is found from the back substitution outcomes that all soliton solutions satisfy the original equations.The proper significance of the explored outcomes is demonstrated by the three-dimensional(3D)and two-dimensional(2D)graphs,which are presented under the selection of particular values of the free parameters.All the combo-soliton(W-shaped,M-shaped,and periodic wave)solutions are found to be new for the interaction between complex short wave and real long wave envelope in laser physics that show the novelty of the study.Moreover,the applied method provides an efficient tool for exploring novel soliton solutions,and it overcomes the complexities of the solitary wave ansatz method.展开更多
In this paper,we are concerned with the existence of multiple solutions to the critical magnetic Schrödinger equation(-i▽-a(x))^(2)u+⒂λV(x)u=p|u|^(p-2)u+(∫R(n)|u(y)|^(2)_(a)^(*)/|x-y|^(a)dy)|u|2_(a)^(*)-2_(u)...In this paper,we are concerned with the existence of multiple solutions to the critical magnetic Schrödinger equation(-i▽-a(x))^(2)u+⒂λV(x)u=p|u|^(p-2)u+(∫R(n)|u(y)|^(2)_(a)^(*)/|x-y|^(a)dy)|u|2_(a)^(*)-2_(u)in R^(N),(0.1)where N≥4,2≤p<2^(*),2_α^(*)=(2N-α)/(N-2)with 0<α<4,λ>0,μ∈R,A(x)=(A_(1)(x),A_(2)(x),…,A_(N)(x))is a real local Hölder continuous vector function,i is the imaginary unit,and V(x)is a real valued potential function on R^(N).Supposing thatΩ=int V^(-1)(0)■R^(N)is bounded,we show that problem(0.1)possesses at least cat_(Ω)(Ω)nontrivial solutions ifλis large.展开更多
In this paper,numerical experiments are carried out to investigate the impact of penalty parameters in the numerical traces on the resonance errors of high-order multiscale discontinuous Galerkin(DG)methods(Dong et al...In this paper,numerical experiments are carried out to investigate the impact of penalty parameters in the numerical traces on the resonance errors of high-order multiscale discontinuous Galerkin(DG)methods(Dong et al.in J Sci Comput 66:321–345,2016;Dong and Wang in J Comput Appl Math 380:1–11,2020)for a one-dimensional stationary Schrödinger equation.Previous work showed that penalty parameters were required to be positive in error analysis,but the methods with zero penalty parameters worked fine in numerical simulations on coarse meshes.In this work,by performing extensive numerical experiments,we discover that zero penalty parameters lead to resonance errors in the multiscale DG methods,and taking positive penalty parameters can effectively reduce resonance errors and make the matrix in the global linear system have better condition numbers.展开更多
运用变分方法讨论一类Schrödinger-Kirchhoff-Poisson方程正解的存在性。在适当假设下,通过运用一些技巧证明了能量泛函满足Palais-Smale条件。最后运用山路引理,Ekeland变分原理和强极大值原理得到了主要结论。The existence of p...运用变分方法讨论一类Schrödinger-Kirchhoff-Poisson方程正解的存在性。在适当假设下,通过运用一些技巧证明了能量泛函满足Palais-Smale条件。最后运用山路引理,Ekeland变分原理和强极大值原理得到了主要结论。The existence of positive solutions for a class of Schrödinger-Kirchhoff-Poisson equation is discussed by using variational methods. Under appropriate assumption, it is proved that the energy functional satisfies the Palais-Smale condition by using some techniques. Finally, the main conclusions are obtained by using mountain pass lemma, Ekeland variational principle and strong maximum principle.展开更多
文摘This paper explores some novel solutions to the generalized Schrödinger-Boussinesq(gSBq)equations,which describe the interaction between complex short wave and real long wave envelope.In order to derive some novel complex hyperbolic and complex trigonometric function solutions,the sine-Gordon equation method(sGEM)is applied to the gSBq equations.Novel complex hyperbolic and trigonometric function solutions are expressed by the dark,bright,combo dark-bright,W-shaped,M-shaped,singular,combo singular,and periodic wave solutions.The accuracy of the explored solitons is examined under the back substitution to the corresponding equations via the symbolic computation software Maple.It is found from the back substitution outcomes that all soliton solutions satisfy the original equations.The proper significance of the explored outcomes is demonstrated by the three-dimensional(3D)and two-dimensional(2D)graphs,which are presented under the selection of particular values of the free parameters.All the combo-soliton(W-shaped,M-shaped,and periodic wave)solutions are found to be new for the interaction between complex short wave and real long wave envelope in laser physics that show the novelty of the study.Moreover,the applied method provides an efficient tool for exploring novel soliton solutions,and it overcomes the complexities of the solitary wave ansatz method.
基金supported by the National Natural Science Foundation of China(12171212)。
文摘In this paper,we are concerned with the existence of multiple solutions to the critical magnetic Schrödinger equation(-i▽-a(x))^(2)u+⒂λV(x)u=p|u|^(p-2)u+(∫R(n)|u(y)|^(2)_(a)^(*)/|x-y|^(a)dy)|u|2_(a)^(*)-2_(u)in R^(N),(0.1)where N≥4,2≤p<2^(*),2_α^(*)=(2N-α)/(N-2)with 0<α<4,λ>0,μ∈R,A(x)=(A_(1)(x),A_(2)(x),…,A_(N)(x))is a real local Hölder continuous vector function,i is the imaginary unit,and V(x)is a real valued potential function on R^(N).Supposing thatΩ=int V^(-1)(0)■R^(N)is bounded,we show that problem(0.1)possesses at least cat_(Ω)(Ω)nontrivial solutions ifλis large.
基金supported by the National Science Foundation grant DMS-1818998.
文摘In this paper,numerical experiments are carried out to investigate the impact of penalty parameters in the numerical traces on the resonance errors of high-order multiscale discontinuous Galerkin(DG)methods(Dong et al.in J Sci Comput 66:321–345,2016;Dong and Wang in J Comput Appl Math 380:1–11,2020)for a one-dimensional stationary Schrödinger equation.Previous work showed that penalty parameters were required to be positive in error analysis,but the methods with zero penalty parameters worked fine in numerical simulations on coarse meshes.In this work,by performing extensive numerical experiments,we discover that zero penalty parameters lead to resonance errors in the multiscale DG methods,and taking positive penalty parameters can effectively reduce resonance errors and make the matrix in the global linear system have better condition numbers.
文摘运用变分方法讨论一类Schrödinger-Kirchhoff-Poisson方程正解的存在性。在适当假设下,通过运用一些技巧证明了能量泛函满足Palais-Smale条件。最后运用山路引理,Ekeland变分原理和强极大值原理得到了主要结论。The existence of positive solutions for a class of Schrödinger-Kirchhoff-Poisson equation is discussed by using variational methods. Under appropriate assumption, it is proved that the energy functional satisfies the Palais-Smale condition by using some techniques. Finally, the main conclusions are obtained by using mountain pass lemma, Ekeland variational principle and strong maximum principle.
