Spiers Memorial Lecture: Quantum chemistry, classical heuristics, and quantum advantage
GKL Chan - Faraday Discussions, 2024 - pubs.rsc.org
We describe the problems of quantum chemistry, the intuition behind classical heuristic
methods used to solve them, a conjectured form of the classical complexity of quantum …
methods used to solve them, a conjectured form of the classical complexity of quantum …
The shape of full configuration interaction to come
JJ Eriksen - The Journal of Physical Chemistry Letters, 2020 - ACS Publications
We present a Perspective on what the future holds for full configuration interaction (FCI)
theory, with an emphasis on conceptual rather than technical details. Upon revisiting the …
theory, with an emphasis on conceptual rather than technical details. Upon revisiting the …
Conversion of projected entangled pair states into a canonical form
We propose an algorithm to convert a projected entangled pair state (PEPS) into a canonical
form, analogous to the well-known canonical form of a matrix product state. Our approach is …
form, analogous to the well-known canonical form of a matrix product state. Our approach is …
Quantum simulation of two-dimensional quantum chemistry in optical lattices
Benchmarking numerical methods in quantum chemistry is one of the key opportunities that
quantum simulators can offer. Here, we propose an analog simulator for discrete two …
quantum simulators can offer. Here, we propose an analog simulator for discrete two …
Multisliced gausslet basis sets for electronic structure
SR White, EM Stoudenmire - Physical Review B, 2019 - APS
We introduce highly local basis sets for electronic structure which are very efficient for
correlation calculations near the complete basis set limit. Our approach is based on …
correlation calculations near the complete basis set limit. Our approach is based on …
Generating function for tensor network diagrammatic summation
The understanding of complex quantum many-body systems has been vastly boosted by
tensor network (TN) methods. Among others, excitation spectrum and long-range interacting …
tensor network (TN) methods. Among others, excitation spectrum and long-range interacting …
Simplified and improved approach to tensor network operators in two dimensions
MJ O'Rourke, GKL Chan - Physical Review B, 2020 - APS
Matrix product states and matrix product operators (MPOs) are one-dimensional tensor
networks that underlie the modern density matrix renormalization group (DMRG) algorithm …
networks that underlie the modern density matrix renormalization group (DMRG) algorithm …
Generalization of the exponential basis for tensor network representations of long-range interactions in two and three dimensions
In one dimension (1D), a general decaying long-range interaction can be fit to a sum of
exponential interactions e− λ rij with varying exponents λ, each of which can be represented …
exponential interactions e− λ rij with varying exponents λ, each of which can be represented …
Emergence of gaussianity in the thermodynamic limit of interacting fermions
Systems of interacting fermions can give rise to ground states whose correlations become
effectively free-fermion-like in the thermodynamic limit, as shown by Baxter for a class of …
effectively free-fermion-like in the thermodynamic limit, as shown by Baxter for a class of …
Numerical continuum tensor networks in two dimensions
We describe the use of tensor networks to numerically determine wave functions of
interacting two-dimensional fermionic models in the continuum limit. We use two different …
interacting two-dimensional fermionic models in the continuum limit. We use two different …