On gaussian curvature equation in $  \mathbb{R}^2 $ with prescribed nonpositive curvature

Huyuan Chen; Dong Ye; Feng Zhou

doi:10.3934/dcds.2020125

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June 2020, 40(6): 3201-3214. doi: 10.3934/dcds.2020125

On gaussian curvature equation in $ \mathbb{R}^2 $ with prescribed nonpositive curvature

Huyuan Chen ^1, , Dong Ye ^2,3, and Feng Zhou ^2,,

1.	Department of Mathematics, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
2.	Center for PDEs, School of Mathematical Sciences, East China Normal University, Shanghai Key Laboratory of PMMP, Shanghai 200062, China
3.	IECL, UMR 7502, University of Lorraine, 57073 Metz, France

^* Corresponding author: Feng Zhou

Dedicated to Professor Wei-Ming Ni’s seventieth birthday

Received March 2019 Revised January 2020 Published February 2020

Fund Project: H.C. is supported by NSFC (No. 11726614 and 11661045). F.Z. and D.Y. are supported by Science and Technology Commission of Shanghai Municipality (STCSM), grant No. 18dz2271000. F.Z. is also supported by NSFC (No. 11726613 and 11431005)

Abstract
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The purpose of this paper is to study the solutions of

$ \Delta u +K(x) e^{2u} = 0 \quad{\rm in}\;\; \mathbb{R}^2 $

with

$ K\le 0 $

. We introduce the following quantities:

$ \alpha_p(K) = \sup\left\{\alpha \in \mathbb{R}:\, \int_{ \mathbb{R}^2} |K(x)|^p(1+|x|)^{2\alpha p+2(p-1)} dx<+\infty\right\}, \quad \forall\; p \ge 1. $

Under the assumption

$ ({\mathbb H}_1) $

$ \alpha_p(K)> -\infty $

for some

$ p>1 $

and

$ \alpha_1(K) > 0 $

, we show that for any

$ 0 < \alpha < \alpha_1(K) $

, there is a unique solution

$ u_\alpha $

with

$ u_\alpha(x) = \alpha \ln |x|+ c_\alpha+o\big(|x|^{-\frac{2\beta}{1+2\beta}} \big) $

at infinity and

$ \beta\in (0, \, \alpha_1(K)-\alpha) $

. Furthermore, we show an example

$ K_0 \leq 0 $

such that

$ \alpha_p(K_0) = -\infty $

for any

$ p>1 $

and

$ \alpha_1(K_0) > 0 $

, for which we study the asymptotic behavior of solutions. In particular, we prove the existence of a solution

$ u_{\alpha_*} $

such that

$ u_{\alpha_*} -\alpha_*\ln|x| = O(1) $

at infinity for some

$ \alpha_* > 0 $

, which does not converge to a constant at infinity. This example exhibits a new phenomenon of solution with logarithmic growth, finite total curvature, and non-uniform asymptotic behavior at infinity.

Keywords: Gaussian curvature, conformal metrics, asymptotic behavior.

Mathematics Subject Classification: 35R06, 35A01, 35J66.

Citation: Huyuan Chen, Dong Ye, Feng Zhou. On gaussian curvature equation in $ \mathbb{R}^2 $ with prescribed nonpositive curvature. Discrete and Continuous Dynamical Systems, 2020, 40 (6) : 3201-3214. doi: 10.3934/dcds.2020125

References:

[1]	L. V. Ahlfors, An extension of Schwartz’s lemma, Trans. Amer. Math. Soc., 43 (1938), 359-364. doi: 10.2307/1990065.
[2]	K.-S. Cheng and C.-S. Lin, Conformal metrics with prescribed nonpositive Gaussian on $ \mathbb{R}^2$, Calc. Var. PDE, 11 (2000), 203-231. doi: 10.1007/s005260000037.
[3]	K.-S. Cheng and W.-M. Ni, On the structure of the conformal Gaussian curvature equation on $ \mathbb{R}^2$, Duke Math. J., 62 (1991), 721-737. doi: 10.1215/S0012-7094-91-06231-9.
[4]	K.-S. Cheng and W.-M. Ni, On the structure of the conformal Gaussian curvature equation on $ \mathbb{R}^2$ Ⅱ, Math. Ann., 290 (1991), 671-680. doi: 10.1007/BF01459266.
[5]	J. Kazdan and F. Warner, Curvature functions for open 2-manifolds, Ann. Math., 99 (1974), 203-219. doi: 10.2307/1970898.
[6]	R. McOwen, On the equation $\Delta u+Ke^2u=f$ and prescribed negative curvature in $ \mathbb{R}^2$, J. Math. Anal. Appl., 103 (1984), 365-370. doi: 10.1016/0022-247X(84)90133-1.
[7]	R. McOwen, Conformal metrics in $ \mathbb{R}^2$ with prescribed Gaussian curvature and positive total curvature, Indiana Univ. Math. J., 34 (1985), 97-104. doi: 10.1512/iumj.1985.34.34005.
[8]	W.-M. Ni, On the elliptic equation $\Delta u+K(x)e^2u=0$ and conformal metric with prescribed Gaussian curvatures, Invent. Math., 66 (1982), 343-352. doi: 10.1007/BF01389399.
[9]	D. Sattinger, Conformal metrics in $ \mathbb{R}^2$ with prescribed curvature, Indiana Univ. Math. J., 22 (1972/73), 1-4. doi: 10.1512/iumj.1973.22.22001.

show all references

References:

[1]	L. V. Ahlfors, An extension of Schwartz’s lemma, Trans. Amer. Math. Soc., 43 (1938), 359-364. doi: 10.2307/1990065.
[2]	K.-S. Cheng and C.-S. Lin, Conformal metrics with prescribed nonpositive Gaussian on $ \mathbb{R}^2$, Calc. Var. PDE, 11 (2000), 203-231. doi: 10.1007/s005260000037.
[3]	K.-S. Cheng and W.-M. Ni, On the structure of the conformal Gaussian curvature equation on $ \mathbb{R}^2$, Duke Math. J., 62 (1991), 721-737. doi: 10.1215/S0012-7094-91-06231-9.
[4]	K.-S. Cheng and W.-M. Ni, On the structure of the conformal Gaussian curvature equation on $ \mathbb{R}^2$ Ⅱ, Math. Ann., 290 (1991), 671-680. doi: 10.1007/BF01459266.
[5]	J. Kazdan and F. Warner, Curvature functions for open 2-manifolds, Ann. Math., 99 (1974), 203-219. doi: 10.2307/1970898.
[6]	R. McOwen, On the equation $\Delta u+Ke^2u=f$ and prescribed negative curvature in $ \mathbb{R}^2$, J. Math. Anal. Appl., 103 (1984), 365-370. doi: 10.1016/0022-247X(84)90133-1.
[7]	R. McOwen, Conformal metrics in $ \mathbb{R}^2$ with prescribed Gaussian curvature and positive total curvature, Indiana Univ. Math. J., 34 (1985), 97-104. doi: 10.1512/iumj.1985.34.34005.
[8]	W.-M. Ni, On the elliptic equation $\Delta u+K(x)e^2u=0$ and conformal metric with prescribed Gaussian curvatures, Invent. Math., 66 (1982), 343-352. doi: 10.1007/BF01389399.
[9]	D. Sattinger, Conformal metrics in $ \mathbb{R}^2$ with prescribed curvature, Indiana Univ. Math. J., 22 (1972/73), 1-4. doi: 10.1512/iumj.1973.22.22001.

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On gaussian curvature equation in $ \mathbb{R}^2 $ with prescribed nonpositive curvature

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