Delve into the intricacies of fractionalized metallic phases in the single band Hubbard model through this comprehensive lecture by Subir Sachdev. Explore key concepts such as the pseudogap regime, Fermi arcs, and the interplay between Fermi liquid and Z2 gauge theory. Gain insights into experimental evidence, photoemission spectra, and the challenges of modeling high-temperature superconductors. Engage with in-depth discussions on topics ranging from charge carrier density to random matrix models, and benefit from extensive Q&A sessions addressing complex queries from the audience. This advanced physics talk, part of a joint course with TIFR, IAS, and ICTS, offers a deep dive into quantum phases of matter and their implications for understanding exotic materials.
Fractionalized Metallic Phases in the Single Band Hubbard Model - Quantum Phases of Matter XXII
International Centre for Theoretical Sciences via YouTube
Overview
Syllabus
Start
Introduction
Q&A - Brief Idea about John Simon's theory for G2 spin Liquid
Preface
The Big Problem!!
Getting Started
Q&A - Any Experimental Evidence proving One-Band model actually captures low energy of Cuprite?
What's the Density of Charge Carriers in the system?
The Experiments - Pseudogap Regime
A Misguided Perception
Specific facts & data
Puzzling Phases - Flanking Metal
Pseudogap Metal - Experiments
PhotoEmission Experiment
Q&A - What's known about temperature dependence of Fermi Arcs?
Why Photoemission Spectrum doesn't have more than one line?
A Naïve Pseudogap Picture
Fixing Holons & Electrons issue
Q&A - To what extent are these steps distinct?
How do you select the state?
Why doesn't this Jk couple symmetrically to both layers?
Is there any substance which shows transition b/w Pseudogap and Fermi Liquid?
Are High-Energy electrons located uniquely or they're spread across equally?
Doesn't the actual Hamiltonian say, there is no symmetry between the two extra spins?
Are Fermi Liquid and Z2 Gauge theory completely decoupled?
How to tune Lambda 1 & 2 microscopic setup and whether L becomes a low energy degree of freedom?
Context about the Strange Metal
Random Matrix Model
Q&A - Are the E the eigenvalue of T or T-mu?
Does the Fermi service which has holes, have any gaps in it?
Thank You!
Taught by
International Centre for Theoretical Sciences
