Abstract
We consider granular quantum matter defined by Sachdev-Ye-Kitaev dots coupled via random one-body hopping. Within the framework of Schwarzian field theory, we identify a zero-temperature quantum phase transition between an insulating phase at weak and a metallic phase at strong hopping. The critical hopping strength scales inversely with the number of degrees of freedom on the dots. The increase of temperature out of either phase induces a crossover into a regime of strange metallic behavior.
Original language | English (US) |
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Article number | 106601 |
Journal | Physical review letters |
Volume | 123 |
Issue number | 10 |
DOIs | |
State | Published - Sep 4 2019 |
Bibliographical note
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