7 papers
No-Go Theorem and Routes towards Cavity-Enhanced Superconductivity
Qing-Dong Jiang
Recent experiments reporting cavity-vacuum-modified superconductivity raise a fundamental question: under what conditions can vacuum electromagnetic fluctuations increase a superco…
Sound Induced Hall Currents in Weyl Exciton Insulators
Xinhong Zhou, Varsha Subramanyan, Qing-Dong Jiang
Weyl semimetals exhibit anomalous transport controlled by their gapless chiral nodes, while gapped Weyl systems are often expected to lose such distinctive responses. Here we show…
A field theory approach to Breit-type Hamiltonians in gapped Dirac systems
Xinhong Zhou, T. H. Hansson, Varsha Subramanyan +1
We develop a path-integral-based field theory for deriving Breit-type low-energy Hamiltonians for gapped Dirac systems coupled to both vector and axial gauge fields. Treating the m…
Quantum Hall Liquids Coupled to Dynamical Electromagnetism
T. H. Hansson, Qing-Dong Jiang, S. A. Kivelson +1
We investigate the effect on a Quantum Hall (QH) liquid of its coupling to 3+1 dimensional dynamical electromagnetism, which renders the system gapless. We calculate both the Hall…
Cavity-Vacuum-Induced Chiral Spin Liquids in Kagome Lattices: Tuning and Probing Topological Quantum Phases via Cavity Quantum Electrodynamics
Chenan Wei, Liu Yang, Qing-Dong Jiang
Topological phases in frustrated quantum magnetic systems have captivated researchers for decades, with the chiral spin liquid (CSL) standing out as one of the most compelling exam…
Quantum Hall effect in a chiral cavity
Liu Yang, Gabriel Cardoso, Thors Hans Hansson +1
We investigate the influence of quantum fluctuations in a chiral cavity on the quantum Hall (QH) state, extending previous studies of QH liquids in linearly polarized cavities. Usi…