1.6k citations · 8k across the 84 of their papers we have counts for
86 papers
Geometry of Contact Terms in Linear Response: Applications to Elasticity
Ian Osborne, Gustavo Monteiro, Barry Bradlyn
Employing the Kubo linear response formalism to calculate the elasticity of anisotropic systems has been shown to yield odd elastic moduli. For Hamiltonian systems, this result see…
Building blocks of topological band theory for photonic crystals
Yoonseok Hwang, Vaibhav Gupta, Antonio Morales-Pérez +6
We derive a framework for classifying topological bands in three-dimensional photonic band structures, where the zero frequency polarization singularity implied by Maxwell's equati…
Exploring Many-Body Quantum Geometry Beyond the Quantum Metric with Correlation Functions: A Time-Dependent Perspective
Yuntao Guan, Barry Bradlyn
The quantum geometric tensor and quantum Fisher information have recently been shown to provide a unified geometric description of the linear response of many-body systems. However…
Imaginary Time Formalism for Causal Nonlinear Response Functions
Sounak Sinha, Barry Bradlyn
It is well established that causal linear response functions can be found by computing the much simpler imaginary time-ordered Matsubara functions and performing an analytic contin…
Stable Real-Space Invariants and Topology Beyond Symmetry Indicators
Yoonseok Hwang, Vaibhav Gupta, Frank Schindler +4
We introduce stable real-space invariants (SRSIs), topological invariants defined from adiabatic deformations between Wannier states, generalizing previously discovered local and c…
Extrinsic Geometry and Gappable Edges in Rotationally Invariant Topological Phases
Sounak Sinha, Barry Bradlyn
Recent work on Abelian topological phases with rotational symmetry has raised the question of whether rotational symmetry can protect gapless propagating edge modes. Here we addres…