Nonequilibrium dynamics of quantum many-body systems

Strongly driven superconductors and Mott insulators

D. De Santis, M. H. Michael, S. Chattopadhyay, A. Cavalleri, G. Refael, P. A. Lee, E. A. Demler, Enhanced coherence in the periodically driven two-dimensional XY model, https://arxiv.org/pdf/2511.12287
R. Andrei, M. Guo, M. Ali, H. Kim, R. D. Averitt, D. Hsieh, E. Demler, Subgap pumping of antiferromagnetic Mott insulators: photoexcitation mechanisms and applications, https://arxiv.org/pdf/2505.15343
V. Radovskaia, R. Andrei, J. R. Hortensius, R. V. Mikhaylovskiy, R. Citro, S. Chattopadhyay, M. X. Na, B. A. Ivanov, E. Demler, A. V. Kimel, A. D. Caviglia, D. Afanasiev, Photoengineering the Magnon Spectrum in an Insulating Antiferromagnet, https://arxiv.org/pdf/2505.00459
M. H. Michael, D. De Santis, E. A. Demler, P. A. Lee, Giant Dynamical Paramagnetism in the driven pseudogap phase of YBa2Cu3O6+x, https://arxiv.org/pdf/2410.12919
P. Dolgirev, M. Michael, A. Zong, N. Gedik, E. Demler, Self-similar dynamics of order parameter fluctuations in pump-probe experiments, Phys. Rev. B 101:174306 (2019). https://arxiv.org/pdf/1910.02518

M. H. Michael, E. Demler, P. Lee, Parametrically amplified Josephson plasma waves in YBa2Cu3O(6+x), arXiv:2505.03358
M. Michael et al., Photonic time-crystalline behaviour mediated by phonon squeezing in Ta2NiSe5, Nat. Commun. 15:3638 (2024). https://doi.org/10.1038/s41467-024-47855-8
S. R. Ul Haque et al., Terahertz parametric amplification as a reporter of exciton condensate dynamics, Nat. Mater. 23, 796 (2024). https://doi.org/10.1038/s41563-023-01755-2
A. von Hoegen et al., Amplification of Superconducting Fluctuations in Driven YBa2Cu3O(6+x), Phys. Rev. X 12:031008 (2022). https://doi.org/10.1103/PhysRevX.12.031008
S. Sugiura, E. Demler, M. Lukin, D. Podolsky, Resonantly enhanced polariton wave mixing and Floquet parametric instability, J. Chem. Phys. 156, 174110 (2022). https://doi.org/10.1063/5.0091718
M. Michael et al., Generalized Fresnel-Floquet equations for driven quantum materials, Phys. Rev. B 105:174301 (2022). https://doi.org/10.1103/PhysRevB.105.174301
M. Buzzi et al., Higgs-mediated optical amplification in a non-equilibrium superconductor, Phys. Rev. X 11:011055 (2021). https://doi.org/10.1103/PhysRevX.11.011055
M. Michael et al., Parametric resonance of Josephson plasma waves..., Phys. Rev. B 102:174505 (2020). https://doi.org/10.1103/PhysRevB.102.174505

S. Chattopadhyay et al., Metastable photo-induced superconductivity far above Tc, NPJ Quantum Materials 10:34 (2025). https://doi.org/10.1038/s41535-025-00750-x
C. J. Eckhardt, S. Chattopadhyay, D. M. Kennes, E. A. Demler, M. A. Sentef, M. H. Michael, Theory of resonantly enhanced photo-induced superconductivity, Nat. Commun. 15:2300 (2024). https://doi.org/10.1038/s41467-024-46632-x
M. Babadi, M. Knap, I. Martin, G. Refael, E. Demler, The theory of parametrically amplified electron-phonon superconductivity, Phys. Rev. B 96:014512 (2017). https://doi.org/10.1103/PhysRevB.96.014512

Z. Z. Yan, Y. Ni, A. Chuang, P. E. Dolgirev, K. Seetharam, E. Demler, C. Robens, M. Zwierlein, Collective flow of fermionic impurities immersed in a Bose-Einstein condensate, Nat. Phys. 20, 1395 (2024). https://doi.org/10.1038/s41567-024-02541-w
P. E. Dolgirev, K. Seetharam, M. Kanasz-Nagy, C. Robens, Z. Z. Yan, M. Zwierlein, E. Demler, Accelerating analysis of Boltzmann equations using Gaussian mixture models..., Phys. Rev. Research 6, 033017 (2024). https://doi.org/10.1103/PhysRevResearch.6.033017