Finite temperature Thomas-Fermi theory, in addition to its success in systems dominated by classical behavior, can also form the basis for development of a finite temperature local density approximation and its leading corrections. It is therefore imperative that we fully understand its limitations and strengths. To this end, the temperature dependence of Thomas-Fermi errors in densities and integrated quantities for simple models is explored. Behavior of finite-temperature Thomas-Fermi theory in limiting cases will be discussed in the contexts of traditional DFT and its semiclassical foundations[1,2], and analysis of finite temperature Thomas-Fermi as a potential functional will be presented.[3][1] Cangi, A. et al. Phys. Rev. B., 81(23):235128, 2010.[2] Pittalis, S. et al. Phys. Rev. Lett., 107:163001, 2011.[3] Cangi, A. et al. Phys. Rev. Lett., 106:236404, 2011.

Temperature dependence of Thomas-Fermi errors

243rd National Meeting (2012)

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