37 citations · 56 across the 3 of their papers we have counts for
4 papers
Effective Hamiltonians for the study of real metals using quantum chemical theories
Tina N. Mihm, Tobias Schäfer, Sai Kumar Ramadugu +2
Computationally efficient and accurate quantum mechanical approximations to solve the many-electron Schrödinger equation are at the heart of computational materials science. In tha…
The sign problem in density matrix quantum Monte Carlo
Hayley R. Petras, William Z. Van Benschoten, Sai Kumar Ramadugu +1
Density matrix quantum Monte Carlo (DMQMC) is a recently-developed method for stochastically sampling the -particle thermal density matrix to obtain exact-on-average energies fo…
Using density matrix quantum Monte Carlo for calculating exact-on-average energies for ab-initio Hamiltonians in a finite basis set
Hayley R. Petras, Sai Kumar Ramadugu, Fionn D. Malone +1
We here apply the recently developed initiator density matrix quantum Monte Carlo (i-DMQMC) to a wide range of chemical environments using atoms and molecules in vacuum. i-DMQMC sa…
Fully quantum embedding with density functional theory for full configuration interaction quantum Monte Carlo
Hayley R. Petras, Daniel Graham, Sai Kumar Ramadugu +2
In common with many high-accuracy electronic structure methods, the initiator adaptation of full configuration interaction quantum Monte Carlo (i-FCIQMC) has difficulty treating re…