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The periodic Lieb-Thirring inequality

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arxiv 2010.02981 v2 pith:B7C3KCL5 submitted 2020-10-06 math-ph math.MPmath.SP

The periodic Lieb-Thirring inequality

classification math-ph math.MPmath.SP
keywords periodicinequalitylieb-thirringconjectureconstantoptimizerssystemsadmits
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We discuss the Lieb-Thirring inequality for periodic systems, which has the same optimal constant as the original inequality for finite systems. This allows us to formulate a new conjecture about the value of its best constant. To demonstrate the importance of periodic states, we prove that the 1D Lieb-Thirring inequality at the special exponent $\gamma=3/2$ admits a one-parameter family of periodic optimizers, interpolating between the one-bound state and the uniform potential. Finally, we provide numerical simulations in 2D which support our conjecture that optimizers could be periodic.

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