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We describe correlator product states, a class of numerically efficient many-body wave functions to describe strongly correlated wave functions in any dimension. Correlator product states introduceâ€¦ (More)

Jastrow-Slater and correlator product state wave functions, two classes of quantum many-body wave functions, are commonly studied using Monte Carlo methods with the associated drawbacks of stochasticâ€¦ (More)

- Hitesh J. Changlani, Huihuo Zheng, Lucas K. Wagner
- The Journal of chemical physics
- 2015

We propose a way of obtaining effective low energy Hubbard-like model Hamiltonians from ab initio quantum Monte Carlo calculations for molecular and extended systems. The Hamiltonian parameters areâ€¦ (More)

- Hitesh J. Changlani, Shivam Ghosh, Sumiran Pujari, Christopher L. Henley
- Physical review letters
- 2013

We study the spin-1/2 quantum Heisenberg antiferromagnet on a Bethe lattice diluted to the percolation threshold. Dilution creates areas of even or odd sublattice imbalance resulting in "danglingâ€¦ (More)

- Adam Holmes, Hitesh J. Changlani, C. J. Umrigar
- Journal of chemical theory and computation
- 2016

We introduce an algorithm for sampling many-body quantum states in Fock space. The algorithm efficiently samples states with probability approximately proportional to an arbitrary function of theâ€¦ (More)

- Huihuo Zheng, Hitesh J. Changlani, Kiel T. Williams, Brian Busemeyer, Lucas K. Wagner
- Front. Phys.
- 2018

Due to advances in computer hardware and new algorithms, it is now possible to perform highly accurate many-body simulations of realistic materials with all their intrinsic complications. The successâ€¦ (More)

- Hitesh J. Changlani, Huihuo Zheng, Lucas K. Wagner
- The Journal of chemical physics
- 2015

- Hitesh J. Changlani, Norm M. Tubman, Taylor L Hughes
- Scientific reports
- 2016

Two powerful theoretical predictions, Anderson localization and the Imry-Ma argument, impose significant restrictions on the phases of matter that can exist in the presence of even the smallestâ€¦ (More)

- Anne Aa Scheie, Jonas Kindervater, +9 authors Collin L. Broholm
- Physical review letters
- 2017

We present a magnetic phase diagram of rare-earth pyrochlore Yb_{2}Ti_{2}O_{7} in a âŸ¨111âŸ© magnetic field. Using heat capacity, magnetization, and neutron scattering data, we show an unusual fieldâ€¦ (More)

- F. R. Petruzielo, Adam Holmes, Hitesh J. Changlani, Maria S. Nightingale, C. J. Umrigar
- Physical review letters
- 2012

We introduce a semistochastic implementation of the power method to compute, for very large matrices, the dominant eigenvalue and expectation values involving the corresponding eigenvector. Theâ€¦ (More)