Mott physics, sign structure, and high-TC superconductivity
Duration: 49 mins 50 secs
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About this item
| Description: |
Weng, ZY (Tsinghua University)
Monday 16 September 2013, 11:00-11:45 |
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| Created: | 2013-09-18 15:48 |
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| Collection: | Mathematics and Physics of the Holographic Principle |
| Publisher: | Isaac Newton Institute |
| Copyright: | Weng, ZY |
| Language: | eng (English) |
| Keywords: | Mott physics; Fermion sign; high-Tc superconductivity; |
| Abstract: | Fermion sign structure constitutes the foundation of the Landau’s Fermi liquid theory in condensed matter physics. But it will be fundamentally changed by the strong interaction in the so-called doped Mott insulator relevant to high-Tc cuprate materials. New novel sign structure as reduced Fermion signs will appear here, which can be precisely captured by a nonintegrable phase factor like emergent topological gauge fields in the simplest doped Mott insulators: the t-J and Hubbard models. The quantum interference of the altered Fermion signs will result in non-Fermi-liquid/non-BCS-type normal/superconducting phenomena, which may provide a systematical understanding of the anomalous properties observed in cuprate superconductors.
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