Multiple existence and linear stability of equilibrium balls in a nonlinear free boundary problem
Author:
M. Taniguchi
Journal:
Quart. Appl. Math. 58 (2000), 283-302
MSC:
Primary 35R35; Secondary 34B15, 35B35
DOI:
https://doi.org/10.1090/qam/1753400
MathSciNet review:
MR1753400
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Abstract: This paper studies construction and linear stability of spherical interfaces in an equilibrium state in a two-phase boundary problem arising in activator-inhibitor models in chemistry. By studying the linearized eigenvalue problem near a given equilibrium ball, we show that the eigenvalues with nonnegative real parts are all real, and that they are characterized as values of a strictly convex function for specific discrete values of its argument. The stability is determined by the location of the zero points of this convex function. Using this fact, we present a criterion of stability in a useful form. We show examples and illustrate that stable equilibrium balls and unstable ones coexist near saddle-node bifurcation points in the bifurcation diagram, and a given equilibrium ball located far from bifurcation points is unstable and the eigenfunction associated with the largest eigenvalue consists of spherically harmonic functions of high degrees.
M. Abramowitz and I. A. Stegun, Handbook of Mathematical Functions, Dover Publications, New York, 1964
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- Xu-Yan Chen, Dynamics of interfaces in reaction diffusion systems, Hiroshima Math. J. 21 (1991), no. 1, 47–83. MR 1091432
- X. Chen and M. Taniguchi, Instability of spherical interfaces in a nonlinear free boundary problem, Adv. Differential Equations 5 (2000), no. 4-6, 747–772. MR 1750117
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D. Hilhorst, Y. Nishiura, and M. Mimura, A free boundary problem arising in some reaction-diffusion systems, Proc. Roy. Soc. Edinburgh 118A, 355–378 (1991)
M. Mimura and T. Tsujikawa, Aggregating pattern dynamics in a chemotaxis model including growth, Physica A 230, 499–543 (1996)
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M. Abramowitz and I. A. Stegun, Handbook of Mathematical Functions, Dover Publications, New York, 1964
X. Chen, Generation and propagation of interfaces in reaction-diffusion systems, Trans. Amer. Math. Soc. (2) 334, 877–913 (1992)
X-Y. Chen, Dynamics of interfaces in reaction diffusion systems, Hiroshima Math. J. 21, 47–83 (1991)
X. Chen and M. Taniguchi, Instability of spherical interfaces in a nonlinear free boundary problem, to appear in Advances in Differential Equations
P. C. Fife, Dynamics of internal layers and diffusive interfaces, CBMS-NSF Regional Conference Series in Applied Mathematics 53, SIAM, Philadelphia, 1988
C. Müller, Spherical Harmonics, Lecture Notes in Mathematics 17, Springer-Verlag, Berlin, Heidelberg, New York, 1966
Y. Giga, S. Goto, and H. Ishii, Global existence of weak solutions for interface equations coupled with diffusion equations, SIAM J. Math. Anal. 23, 821–835 (1992)
D. Hilhorst, Y. Nishiura, and M. Mimura, A free boundary problem arising in some reaction-diffusion systems, Proc. Roy. Soc. Edinburgh 118A, 355–378 (1991)
M. Mimura and T. Tsujikawa, Aggregating pattern dynamics in a chemotaxis model including growth, Physica A 230, 499–543 (1996)
Y. Nishiura and M. Mimura, Layer oscillations in reaction-diffusion systems, SIAM J. Appl. Math. 49, 481–514 (1989)
T. Ohta, M. Mimura, and R. Kobayashi, Higher-dimensional localized patterns in excitable media, Physica D 34, 115–144 (1989)
M. Taniguchi and Y. Nishiura, Instability of planar interfaces in reaction-diffusion systems, SIAM J. Math. Anal. (1) 25, 99–134 (1994)
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© Copyright 2000
American Mathematical Society