535 citations · 1.1k across the 14 of their papers we have counts for
7 papers · 1 filter
Bootstrap certification of string order in quantum spin chains
Sagnik Banerjee, Haoyu Guo, Debanjan Chowdhury
The many-body bootstrap certifies ground-state properties by minimizing energy over correlators constrained only by positivity, without any variational wavefunction. Its cost, howe…
Resolving unconventional gap structure in kagome superconductors with hybrid microwave circuits
Yejin Lee, Haolin Jin, Sushmita Chandra +12
Unconventional superconductivity is a hallmark of exotic quantum matter, where determining the pairing symmetry is essential for uncovering its microscopic origin. Kagome supercond…
Floquet Quasiparticle Poisoning of Frozonium
Haoyu Guo, Debanjan Chowdhury
Periodic driving can suppress the Josephson nonlinearity of a fluxonium superconducting circuit, producing a nearly harmonic Floquet spectrum at isolated freezing points [K. Lewell…
Dynamical Control of Superconductivity in Superconductor-Ferromagnet Bilayers
Dimitri Pimenov, Nicholas R. Poniatowski, Charlotte G. L. Bøttcher +2
We study a simplified model of a ferromagnetic metal proximitized by a fully-gapped wave superconductor and integrated with a microwave resonator. The low-energy excitations in…
Charting the emergent low-dimensional manifold of quantum materials
Jason Z. Kim, Omri Lesser, Debanjan Chowdhury
The periodic table of elements transformed chemistry by revealing simple organizing principles underlying atomic behavior. Despite decades of effort, no analogous framework has eme…
Competing nonlinearities, criticality, and order-to-chaos transition in deep networks
Omri Lesser, Debanjan Chowdhury
Deep neural networks owe their expressive power to nonlinear activation functions. The effective field theory of signal propagation at initialization reveals a few distinct univers…
Can electronic quantum criticality drive phonon-induced linear-in-temperature resistivity?
Haoyu Guo, Debanjan Chowdhury
Optical phonons naturally generate linear-in- resistivity in the high-temperature equipartition regime, but their finite gap prevents this mechanism from surviving to asymptotic…