# Research

## Overview

I work broadly on the theory of quantum many-body dynamics and statistical physics, and also have interests in quantum information. This means that I strive to understand and characterize the rich set of universal behaviors that can occur when many quantum mechanical degrees of freedom (ex: qubits) are interacting and out of equilibrium. Such systems can be realized with recently-developed quantum simulators and quantum processors, so this field has a healthy interplay of theory and experiment. In my research, I employ both state-of-the-art numerical simulations and mathematical approaches to gain an understanding of these systems.

## Publications

My papers can also be found on arXiv and google scholar.

### 2023

H. Ha, A. Morningstar, D. Huse, “Many-body resonances in the avalanche instability of many-body localization,” arxiv:2301.04658.

### 2022

N. O'Dea, A. Morningstar, S. Gopalakrishnan, V. Khemani, “Entanglement and absorbing-state transitions in interactive quantum dynamics,” arxiv:2211.12526.

A. Morningstar, D. Huse, V. Khemani, “Universality classes of thermalization for mesoscopic Floquet systems,” arxiv:2210.13444.

L. Christakis, J. Rosenberg, R. Raj, S. Chi, A. Morningstar, D. Huse, Z. Yan, and W. Bakr, “Probing site-resolved correlations in a spin system of ultracold molecules,” Nature 614, 64-69.

T. Micklitz, A. Morningstar, A. Altland, and D. Huse, “Emergence of Fermi's Golden Rule,” Phys. Rev. Lett. 129, 140402. Editor's suggestion.

A. Morningstar and W. Bakr, “Anomalous fluid flow in quantum systems,” Science 376, 6594, 699-700.

S. Gopalakrishnan, A. Morningstar, R. Vasseur, and V. Khemani, “Theory of anomalous full counting statistics in anisotropic spin chains,” arXiv:2203.09526.

### 2021

M. Hauru, A. Morningstar, J. Beall, M. Ganahl, A. Lewis, and G. Vidal, “Simulation of quantum physics with Tensor Processing Units: brute-force computation of ground states and time evolution,” arXiv:2111.10466.

A. Morningstar, M. Hauru, J. Beall, M. Ganahl, A. Lewis, V. Khemani, and G. Vidal, “Simulation of quantum many-body dynamics with Tensor Processing Units: Floquet prethermalization,” PRX Quantum 3, 020331. Editor's suggestion.

A. Morningstar, L. Colmenarez, V. Khemani, D. Luitz, and D. Huse, “Avalanches and many-body resonances in many-body localized systems,” Phys. Rev. B 105, 174205. Editor's suggestion.

### 2020

A. Morningstar, D. Huse, and J. Imbrie, “Many-body localization near the critical point,” Phys. Rev. B 102, 125134. Editor's suggestion.

A. Morningstar, V. Khemani, and D. Huse, “Kinetically constrained freezing transition in a dipole-conserving system,” Phys. Rev. B 101, 214205.

### 2019

E. Guardado-Sanchez, A. Morningstar, B. Spar, P. Brown, D. Huse, and W. Bakr, “Subdiffusion and Heat Transport in a Tilted Two-Dimensional Fermi-Hubbard System,” Phys. Rev. X 10, 011042.

A. Morningstar and D. Huse, “Renormalization-group study of the many-body localization transition in one dimension,” Phys. Rev. B 99, 224205.

### 2018

A. Morningstar and R. Melko, “Deep learning the Ising model near criticality,” J. Mach. Learn. Res. 18, 163.

## Code

You can find some code I've written for research purposes on my GitHub.