About

I am a quantitative researcher. You can reach me at mail.gracezhang (at) gmail (dot) com.

I completed my PhD in theoretical condensed matter physics at Harvard, where I was fortunate to work with David Nelson under the support of NSF GRFP and the Paul and Daisy Soros Fellowship. Previously, I obtained my undergraduate degree in physics at Massachusetts Institute of Technology and enjoyed a summer at Google Research, working with Anton Geraschenko on the applied science team.

Research

The Renormalization Group and Condensed Matter Physics,
D. R. Nelson and G. H. Zhang. Princeton University Press. (2025)

Colloidal Crystallization on Cones,
J. H. Sun, G. H. Zhang, A. Plummer, C. Martin, N. Tanjeem, D. R. Nelson, V. N. Manoharan. Physical Review Letters 134, 018201. (2025) (Editor's Suggestion)

Geometric frustration of hard-disk packings on cones,
J. H. Sun, A. Plummer, G. H. Zhang, D. R. Nelson, V. N. Manoharan. Physical Review E 108, 054608. (2023) (Editor's Suggestion) [arXiv:2309.14446]

Defect absorption and emission for p-atic liquid crystals on cones,
F. Vafa, G. H. Zhang, D. R. Nelson. Physical Review E 106, 024704. (2022) [arXiv:2204.06576]

Fractional defect charges in liquid crystals with p-fold rotational symmetry on cones,
G. H. Zhang, D. R. Nelson, Physical Review E 105, 054703. (2022) (Editor's Suggestion) [arXiv:2201.11201]

Bottlenecks, Modularity, and the Neural Control of Behavior,
A. Nande, V. Dubinkina, R. Ravasio, G. H. Zhang, G. J. Berman, Frontiers in Behavioral Neuroscience, 117 (2022)

Phonon localization of inhomogeneous lattices: Can you hear the shape of a cone?
G. H. Zhang, D. R. Nelson, Physical Review E 104.6, 065005. (2021) (Editor's Suggestion) [arXiv:2107.11431]

Statistical Mechanics of Dislocation Pileups in Two Dimensions,
G. H. Zhang, D. R. Nelson, Physical Review E 103, 022139. (2021) (Editor's Suggestion) [arXiv:2009.14402]

Statistical Mechanics of Low Angle Grain Boundaries in Two Dimensions,
G. H. Zhang, D. R. Nelson, Physical Review Letters 125, 215503. (2020) [arXiv:2009.03408]

Eigenvalue Repulsion and Eigenvector Localization in Sparse Non-Hermitian Random Matrices,
G. H. Zhang, D. R. Nelson, Physical Review E 100, 052315. (2019) [arXiv:1909.08741]

Phase diagrams for quantum Brownian motion on two-dimensional Bravais lattices,
G. H. Zhang, Physical Review B 96, 205440. (2017) [arXiv:1708.06007]

Sudden Collapse of Magnetic Order in Oxygen-Deficient Nickelate Films,
J. Li, R. J. Green, Z. Zhang, R. Sutarto, J. T. Sadowski, Z. Zhu, G. H. Zhang, D. Zhou, Y. Sun, F. He, S. Ramanathan, and R. Comin, Physical Review Letters 126, 187602. (2021) [arXiv:2010.08545]

Photon-mediated interactions between quantum emitters in a diamond nanocavity,
R. E. Evans, M. K. Bhaskar, D. D. Sukachev, C. T. Nguyen, A. Sipahigil, M. J. Burek, B. Machielse, G. H. Zhang, A. S. Zibrov, E. Bielejec, H. Park, M. Loncar, M. D. Lukin, Science 362 (6415), 662-665. (2018) [arXiv:1807.04265]

Fermi surface in the absence of a Fermi liquid in the Kondo insulator SmB6,
M. Hartstein, W. H. Toews, Y.-T. Hsu, B. Zeng, X. Chen, M. Ciomaga Hatnean, Q. R. Zhang, S. Nakamura, A. S. Padgett, G. Rodway-Gant, J. Berk, M. K. Kingston, G. H. Zhang, M. K. Chan, S. Yamashita, T. Sakakibara, Y. Takano, J.-H. Park, L. Balicas, N. Harrison, N. Shitsevalova, G. Balakrishnan, G. G. Lonzarich, R. W. Hill, M. Sutherland, Suchitra E. Sebastian, Nature Physics 14, 166-172. (2017) [arXiv:1710.08366]

Accessing the full superconducting dome in pristine YBa2Cu3O6+x under pressure,
P. L. Alireza, G. H. Zhang, W. Guo, J. Porras, T. Loew, Y. -T. Hsu, G. G. Lonzarich, M. Le Tacon, B. Keimer, Suchitra E. Sebastian, Physical Review B 95, 100505(R). (2017) [arXiv:1610.09790]

Fast Compact Laser Shutter Using a Direct Current Motor and 3D Printing,
G. H. Zhang, B. Braverman, A. Kawasaki, V. Vuletić, Review of Scientific Instruments 86, 126105. (2015) [arXiv:1509.01566]