18 citations · 32 across the 8 of their papers we have counts for
8 papers
A quantum geometric mechanism for chiral domain wall metastability: Application to twisted transition-metal dichalcogenides
Nisarg Chadha, Qiang Gao, Eslam Khalaf +1
Band topology can have an imprint on the excitations of a ferromagnet. A known example is quantum Hall ferromagnets and their lattice analogs; when both flavors have the same Chern…
Observation of metastable chiral domain walls in a topological magnet
Richen Xiong, Chenxin Qin, Zhaoyu Han +17
The interplay between topology and correlation can give rise to exotic collective excitations. The integer and fractional quantum anomalous Hall (QAH) magnets recently discovered i…
Bootstrap bounds for Quantum Spin Systems using String Operators
Nisarg Chadha, Michael G. Scheer, Eslam Khalaf
Bootstrap is a numerical many-body method that provides rigorous bounds on ground-state observables by imposing a set of necessary constraints on the expectation values of operator…
Defect Bootstrap: Tight Ground State Bounds in Spontaneous Symmetry Breaking Phases
Michael G. Scheer, Nisarg Chadha, Da-Chuan Lu +1
The recent development of bootstrap methods based on semidefinite relaxations of positivity constraints has enabled rigorous two-sided bounds on local observables directly in the t…
Universality in quantum critical flow of charge and heat in ultra-clean graphene
Aniket Majumdar, Nisarg Chadha, Pritam Pal +6
Close to the Dirac point, graphene is expected to exist in quantum critical Dirac fluid state, where the flow of both charge and heat can be described with a dc electrical conducti…
Vortical currents and reciprocal relations for transport coefficients in the electron hydrodynamic regime
Nisarg Chadha, Subroto Mukerjee
We investigate the hydrodynamic regime in metals with momentum-conserving electron-electron scattering. The conservation of momentum results in well-defined dynamics whose effects…
Real-space topological localizer index to fully characterize the dislocation skin effect
Nisarg Chadha, Ali G. Moghaddam, Jeroen van den Brink +1
The dislocation skin effect exhibits the capacity of topological defects to trap an extensive number of modes in two-dimensional non-Hermitian systems. Similar to the corresponding…
Uncovering Exceptional Contours in non-Hermitian Hyperbolic Matter
Nisarg Chadha, Awadhesh Narayan
Hyperbolic lattices are starting to be explored in search of novel phases of matter. At the same time, non-Hermitian physics has come to the forefront in photonic, optical, phononi…