High Tc Superconductor Woodstock 2020 - the 2nd meeting.
Please circulate. 10:30 -- 12 ET Wed.
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Strongly Correlated Quantum Materials and High-Temperature
Superconductors Series
September 23 Wed 2020, 10:30 -- 12 noon ET
Venue: 977347126
https://harvard.zoom.us/j/977347126Password: cmsa
Speaker: Subir Sachdev (Harvard University)
Title:
Metal-to-metal quantum phase transitions not described by
symmetry-breaking orders II
Abstract: In this second talk, I will focus on (nearly) solvable
models of metal-metal transition in random systems. The t-J model with
random and all-to-all hopping and exchange can be mapped onto a
quantum impurity model coupled self-consistently to an environment
(the mapping also applies to a t-J model in a large dimension lattice,
with random nearest-neighbor exchange). Such models will be argued to
exhibit metal-metal quantum phase transitions in the universality
class of the SYK model, accompanied by a linear-in-T resistivity from
time reparameterization fluctuations. I will also present the results
of exact diagonalization of random t-J clusters, obtained recently
with Henry Shackleton, Alexander Wietek, and Antoine Georges.
https://cmsa.fas.harvard.edu/strongly-correlated-materials/as part of Quantum Matter in Mathematics and Physics
https://cmsa.fas.harvard.edu/quantum-matter-seminar/------
Thank you very much. Hope you have a great day.
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Harvard University CMSA