723 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of TorontoCA148 papers
- Canadian Institute for Theoretical AstrophysicsCA30 papers
- Scarborough Health NetworkCA16 papers
- University of GenevaCH15 papers
- Princeton UniversityUS13 papers
- Université de MontréalCA12 papers
- University of CambridgeGB12 papers
- Centre National de la Recherche ScientifiqueFR11 papers
- Massachusetts Institute of TechnologyUS9 papers
- University of ArizonaUS8 papers
- University of WarwickGB8 papers
- Centro de Astrofísica da Universidade do PortoPT7 papers
153 papers
Eigenvectors of the square grid plus GUE
András Mészáros, Bálint Virág
Eigenvectors of the GUE-perturbed discrete torus with uniform boundary conditions retain some product structure for small perturbations but converge to discrete Gaussian waves for…
Assessment of various Hamiltonian partitionings for the electronic structure problem on a quantum computer using the Trotter approximation
Luis A. Martínez-Martínez, Tzu-Ching Yen, Artur F. Izmaylov
Solving the electronic structure problem via unitary evolution of the electronic Hamiltonian is one of the promising applications of digital quantum computers. One of the practical…
Fluid fermionic fragments for optimizing quantum measurements of electronic Hamiltonians in the variational quantum eigensolver
Seonghoon Choi, Ignacio Loaiza, Artur F. Izmaylov
Measuring the expectation value of the molecular electronic Hamiltonian is one of the challenging parts of the variational quantum eigensolver. A widely used strategy is to express…
Reducing molecular electronic Hamiltonian simulation cost for Linear Combination of Unitaries approaches
Ignacio Loaiza, Alireza Marefat Khah, Nathan Wiebe +1
We consider different Linear Combination of Unitaries (LCU) decompositions for molecular electronic structure Hamiltonians. Using these LCU decompositions for Hamiltonian simulatio…
Improving quantum measurements by introducing "ghost" Pauli products
Seonghoon Choi, Tzu-Ching Yen, Artur F. Izmaylov
Reducing the number of measurements required to estimate the expectation value of an observable is crucial for the variational quantum eigensolver to become competitive with state-…
Stability of concordance embeddings
Thomas Goodwillie, Manuel Krannich, Alexander Kupers
We prove a stability theorem for spaces of smooth concordance embeddings. From it we derive various applications to spaces of concordance diffeomorphisms and homeomorphisms.
The Open Catalyst 2022 (OC22) Dataset and Challenges for Oxide Electrocatalysts
Richard Tran, Janice Lan, Muhammed Shuaibi +14
The development of machine learning models for electrocatalysts requires a broad set of training data to enable their use across a wide variety of materials. One class of materials…
Controlling energy conservation in quantum dynamics with independently moving basis functions: Application to Multi-Configuration Ehrenfest
Mina Asaad, Loïc Joubert-Doriol, Artur F. Izmaylov
Application of the time-dependent variational principle to a linear combination of frozen-width Gaussians describing the nuclear wavefunction provides a formalism where the total e…
Semi-Transparent Shear Turbulence in Hot Jupiter Atmospheres
Kristen Menou
Turbulent transport driven by secular shear instabilities can lead to enhanced vertical mixing in hot Jupiter atmospheres, impacting their cloudiness, chemistry and overall vertica…
Neptune's ring arcs from VLT/SPHERE-IRDIS near-infrared observations
D. Souami, S. Renner, B. Sicardy +4
Neptune's incomplete ring arcs have been stable since their discovery in 1984 by stellar occultation. Although these structures should be destroyed within a few months through diff…
Climate uncertainties caused by unknown land distribution on habitable M-Earths
Evelyn Macdonald, Adiv Paradise, Kristen Menou +1
A planet's surface conditions can significantly impact its climate and habitability. In this study, we use the 3D general circulation model ExoPlaSim to systematically vary dayside…
A Quantum Computing View on Unitary Coupled Cluster Theory
Abhinav Anand, Philipp Schleich, Sumner Alperin-Lea +7
We present a review of the Unitary Coupled Cluster (UCC) ansatz and related ansätze which are used to variationally solve the electronic structure problem on quantum computers. A b…
Analytic gradients in variational quantum algorithms: Algebraic extensions of the parameter-shift rule to general unitary transformations
Artur F. Izmaylov, Robert A. Lang, Tzu-Ching Yen
Optimization of unitary transformations in Variational Quantum Algorithms benefits highly from efficient evaluation of cost function gradients with respect to amplitudes of unitary…
ExoPlaSim: Extending the Planet Simulator for Exoplanets
Adiv Paradise, Evelyn Macdonald, Kristen Menou +2
The discovery of a large number of terrestrial exoplanets in the habitable zones of their stars, many of which are qualitatively different from Earth, has led to a growing need for…
Fundamental Challenges to Remote Sensing of Exo-Earths
Adiv Paradise, Kristen Menou, Christopher Lee +1
Inferring the climate and surface conditions of terrestrial exoplanets in the habitable zone is a major goal for the field of exoplanet science. This pursuit will require both stat…
Subspace stabilisers in hyperbolic lattices
Mikhail Belolipetsky, Nikolay Bogachev, Alexander Kolpakov +1
This paper shows that immersed totally geodesic -dimensional suborbifolds of -dimensional arithmetic hyperbolic orbifolds correspond to finite subgroups of the commensurator…
The rarity of very red TNOs in the scattered disk
Mohamad Ali-Dib, Michael Marsset, Wing-Cheung Wong +1
We investigate the origins of the photometrically Very Red and Less Red Trans-Neptunian Objects. We first reanalyse the dataset of Marsset et al. 2019 and find that, in addition to…
Constraining protoplanetary disks with exoplanetary dynamics: Kepler-419 as an example
Mohamad Ali-Dib, Cristobal Petrovich
We investigate the origins of Kepler-419, a peculiar system hosting two nearly coplanar and highly eccentric gas giants with apsidal orientations librating around anti-alignment, a…
How to define quantum mean-field solvable Hamiltonians using Lie algebras
Artur F. Izmaylov, Tzu-Ching Yen
Necessary and sufficient conditions for quantum Hamiltonians to be exactly solvable within mean-field theories have not been formulated so far. To resolve this problem, first, we d…
An -bundle over with nontrivial -genus
Manuel Krannich, Alexander Kupers, Oscar Randal-Williams
We explain the existence of a smooth -bundle over whose total space has nontrivial -genus. Combined with an argument going back to Hitchin, this answers a ques…
Cartan sub-algebra approach to efficient measurements of quantum observables
Tzu-Ching Yen, Artur F. Izmaylov
An arbitrary operator corresponding to a physical observable cannot be measured in a single measurement on currently available quantum hardware. To obtain the expectation value of…
Ethical Analysis on the Application of Neurotechnology for Human Augmentation in Physicians and Surgeons
Soaad Hossain, Syed Ishtiaque Ahmed
With the shortage of physicians and surgeons and increase in demand worldwide due to situations such as the COVID-19 pandemic, there is a growing interest in finding solutions to h…
On the generalized Bykovskii presentation of Steinberg modules
Alexander Kupers, Jeremy Miller, Peter Patzt +1
We study presentations of the virtual dualizing modules of special linear groups of number rings, the Steinberg modules. Bykovskii gave a presentation for the Steinberg modules of…
Some Hermitian K-groups via geometric topology
Manuel Krannich, Alexander Kupers
We compute the first two symplectic quadratic K-theory groups of the integers, or equivalently, the first two stable homology groups of the group of symplectic integral matrices pr…