177 citations · 669 across the 29 of their papers we have counts for
29 papers
Strongly Interacting Phases in Twisted Bilayer Graphene at the Magic Angle
Khagendra Adhikari, Kangjun Seo, K. S. D. Beach +1
Twisted bilayer graphene near the magic angle is known to have a cascade of insulating phases at integer filling factors of the low-energy bands. In this Letter we address the natu…
Universal Aspects of Barrier Crossing Under Bias
Sudeep Adhikari, K. S. D. Beach
The thermal activation process by which a system passes from one local energy minimum to another is a recurring motif in physics, chemistry, and biology. For instance, biopolymer c…
Tunable quantum spin chain with three-body interactions
Khagendra Adhikari, K. S. D. Beach
We introduce a generalization of the Fredkin spin chain with tunable three-body interactions expressed in terms of conventional spin-half operators. Of the model's two free paramet…
Effective interactions between local hopping modulations on the square lattice
Huu T. Do, Khagendra Adhikari, K. S. D. Beach
We address the problem of free fermions interacting with frozen gauge fields. In particular, we consider a tight-binding model of fermions on the square lattice in which (i) flux 0…
Deforming the Fredkin spin chain away from its frustration-free point
Khagendra Adhikari, K. S. D. Beach
The Fredkin model describes a spin-half chain segment subject to three-body, correlated-exchange interactions and twisted boundary conditions. The model is frustration-free, and it…
Detection of symmetry-protected topological order in AKLT states by exact evaluation of the strange correlator
Keola Wierschem, K. S. D. Beach
The strange correlator [Phys. Rev. Lett. 112, 247202 (2014)] has been proposed as a measure of symmetry protected topological order in one- and two-dimensional systems. It takes th…