Stanford Advisors

All Publications

  • Mixed Stochastic-Deterministic Approach for Many-Body Perturbation Theory Calculations. Physical review letters Altman, A. R., Kundu, S., da Jornada, F. H. 2024; 132 (8): 086401


    We present an approach for GW calculations of quasiparticle energies with quasiquadratic scaling by approximating high-energy contributions to the Green's function in its Lehmann representation with effective stochastic vectors. The method is easy to implement without altering the GW code, converges rapidly with stochastic parameters, and treats systems of various dimensionality and screening response. Our calculations on a 5.75° twisted MoS_{2} bilayer show how large-scale GW methods include geometry relaxations and electronic correlations on an equal basis in structurally nontrivial materials.

    View details for DOI 10.1103/PhysRevLett.132.086401

    View details for PubMedID 38457735

  • Exciton fine structure in twisted transition metal dichalcogenide heterostructures NPJ COMPUTATIONAL MATERIALS Kundu, S., Amit, T., Krishnamurthy, H. R., Jain, M., Refaely-Abramson, S. 2023; 9 (1)