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Journal of the Australian Mathematical Society Journal of the Australian Mathematical Society

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UNIQUENESS OF SOLUTIONS TO SCHRÖDINGER EQUATIONS ON $H$ -TYPE GROUPS

Part of: Abstract harmonic analysis Lie groups

Published online by Cambridge University Press:  07 August 2013

SALEM BEN SAÏD ,
SUNDARAM THANGAVELU  and
VENKU NAIDU DOGGA
SALEM BEN SAÏD
Affiliation:
Institut Elie Cartan, Université de Lorraine, B.P. 239, 54506 Vandoeuvre-Les-Nancy, France
SUNDARAM THANGAVELU
Affiliation:
Department of Mathematics, Indian Institute of Science, Bangalore 560 012, India email veluma@math.iisc.ernet.invenku11@math.iisc.ernet.in
VENKU NAIDU DOGGA
Affiliation:
Department of Mathematics, Indian Institute of Science, Bangalore 560 012, India email veluma@math.iisc.ernet.invenku11@math.iisc.ernet.in
Corresponding
E-mail address:
veluma@math.iisc.ernet.in
venku11@math.iisc.ernet.in
Salem.BenSaid@univ-lorraine.fr
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Abstract

This paper deals with the Schrödinger equation $i{\partial }_{s} u(\mathbf{z} , t; s)- \mathcal{L} u(\mathbf{z} , t; s)= 0, $ where $ \mathcal{L} $ is the sub-Laplacian on the Heisenberg group. Assume that the initial data $f$ satisfies $\vert f(\mathbf{z} , t)\vert \lesssim {q}_{\alpha } (\mathbf{z} , t), $ where ${q}_{s} $ is the heat kernel associated to $ \mathcal{L} . $ If in addition $\vert u(\mathbf{z} , t; {s}_{0} )\vert \lesssim {q}_{\beta } (\mathbf{z} , t), $ for some ${s}_{0} \in \mathbb{R} \setminus \{ 0\} , $ then we prove that $u(\mathbf{z} , t; s)= 0$ for all $s\in \mathbb{R} $ whenever $\alpha \beta \lt { s}_{0}^{2} . $ This result holds true in the more general context of $H$ -type groups. We also prove an analogous result for the Grushin operator on ${ \mathbb{R} }^{n+ 1} . $

Keywords

H-type groups sub-Laplacian Schrödinger equation heat kernel spherical harmonics

MSC classification

Secondary: 22E30: Analysis on real and complex Lie groups 43A80: Analysis on other specific Lie groups
Type
Research Article
Information
Journal of the Australian Mathematical Society , Volume 95 , Issue 3 , December 2013 , pp. 297 - 314
Copyright
Copyright ©2013 Australian Mathematical Publishing Association Inc. 

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UNIQUENESS OF SOLUTIONS TO SCHRÖDINGER EQUATIONS ON $H$ -TYPE GROUPS
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