5 papers
Fast Length-Squared Sampling for Positive-Semidefinite Matrices
Rajarshi Bhattacharjee, Ethan N. Epperly, Cameron Musco +1
We describe a simple rejection-sampling-based algorithm to perform length-squared sampling on an positive-semidefinite (psd) matrix: that is, to sample a column with p…
Finite temperature precursors of Mottness in the Fermi Hubbard model
Sayantan Roy, Abhisek Samanta, Nandini Trivedi
We investigate finite-temperature precursors of Mottness in the repulsive Hubbard model above the spin-ordering temperature, using numerically exact determinant quantum Monte Carlo…
Sign changes of the thermoelectric transport coefficient across the metal-insulator crossover in the doped Fermi Hubbard model
Sayantan Roy, Abhisek Samanta, Nandini Trivedi
We investigate the doping-dependence of the Seebeck coefficient, as calculated from the Kelvin formula, for the Fermi Hubbard model using determinantal quantum Monte Carlo simulati…
Symmetry broken states at high displacement fields in ABA trilayer graphene
Simrandeep Kaur, Unmesh Ghorai, Abhisek Samanta +4
In this Letter, we present a comprehensive study of magnetotransport in high-mobility trilayer graphene (TLG) devices under a transverse displacement field, focusing on symmetry-br…
Dynamic mass generation on two-dimensional electronic hyperbolic lattices
Noble Gluscevich, Abhisek Samanta, Sourav Manna +1
Free electrons hopping on hyperbolic lattices embedded on a negatively curved space can foster (a) Dirac liquids, (b) Fermi liquids, and (c) flat bands, respectively characterized…