Keisuke Fujii, Daichi Kagamihara, Masaru Hongo, "Anomalous tunneling as a low-energy theorem for Nambu-Goldstone modes," [arXiv:2604.27489]
Jun Mitsuhashi, Keisuke Fujii, Masaru Hongo, "Effective theory of surface oscillations in self-bound superfluid droplets," [arXiv:2603.10304]
Juergen Berges, Sandra Brandstetter, Jasmine Brewer, Georg Bruun, Tilman Enss, Stefan Floerchinger, Keisuke Fujii, Maciej Galka, Giuliano Giacalone, Qingze Guan, Carl Heintze, Lars H. Heyen, Ilya Selyuzhenkov, Selim Jochim, Jesper Levinsen, Philipp Lunt, Silvia Masciocchi, Aleksas Mazeliauskas, Nir Navon, Alice Ohlson, Meera Parish, Stephanie M. Reimann, Francesco Scazza, Thomas Schaefer, Derek Teaney, Joseph Thywissen, Raju Venugopalan, Yangqian Yan, Matteo Zaccanti, Torsten V. Zache, "Few is different: deciphering many-body dynamics in mesoscopic quantum gases," [arXiv:2509.05049]
Keisuke Fujii, Yuto Ashida, "Gauge theory for topological waves in continuum fluids with odd viscosity," SciPost Phys. Core 8, 058 (2025);[arXiv:2411.02958]
Nikolas Liebster, Marius Sparn, Elinor Kath, Jelte Duchene, Keisuke Fujii, Sarah Görlitz, Tilman Enss, Helmut Strobel, and Markus K. Oberthaler, "Observation of Pattern Stabilization in a Driven Superfluid," Phys. Rev. X 15, 011026 (2025); [arXiv:2309.03792]
Keisuke Fujii and Tilman Enss, "Hydrodynamic Attractor in Ultracold Atoms," Phys. Rev. Lett. 133, 173402 (2024); [arXiv:2404.12921]
Yukinao Akamatsu, Shimpei Endo, Keisuke Fujii, and Masaru Hongo, "Complex-valued in-medium potential between heavy impurities in ultracold atoms," Phys. Rev. A 110, 033304 (2024); [arXiv:2312.08241]
Keisuke Fujii, Sarah L. Görlitz, Nikolas Liebster, Marius Sparn, Elinor Kath, Helmut Strobel, Markus K. Oberthaler, and Tilman Enss, "Stable-fixed-point description of square-pattern formation in driven two-dimensional Bose-Einstein condensates," Phys. Rev. A 109, L051301 (2024); [arXiv:2309.03829]
Keisuke Fujii and Tilman Enss, "Bulk viscosity of resonantly interacting fermions in the quantum virial expansion," Ann. Phys. 453, 169296 (2023); [arXiv:2208.03353].
Keisuke Fujii, Masaru Hongo, and Tilman Enss, "Universal van der Waals force between heavy polarons in superfluids," Phys. Rev. Lett. 129, 233401(2022);[arXiv:2206.01048]. (Press release in Japanese)
Keisuke Fujii and Masaru Hongo, "Effective field theory of fluctuating wall in open systems: from a kink in Josephson junction to general domain wall,'' SciPost Phys. 12, 160 (2022); [arXiv:2109.10335].
Keisuke Fujii and Yusuke Nishida, "Microscopic derivation of the Boltzmann equation for transport coefficients of resonating fermions at high temperature,'' Phys. Rev. A 103, 053320 (2021); [arXiv:2103.10123].
Takuya Furusawa, Keisuke Fujii, and Yusuke Nishida, "Hall viscosity in the A-phase of superfluid 3He,'' Phys. Rev. B 103, 064506 (2021); [arXiv:2008.08276].
Keisuke Fujii and Yusuke Nishida, "Bulk viscosity of resonating fermions revisited: Kubo formula, sum rule, and the dimer and high-temperature limits,'' Phys. Rev. A 102, 023310 (2020); [arXiv:2004.12154].
Kazutaka Takahashi, Yuki Hino, Keisuke Fujii, and Hisao Hayakawa, "Full counting statistics and fluctuation-dissipation relation for periodically driven systems,'' J. Stat. Phys. 181, 2206 (2020); [arXiv:2003.11935].
Kazutaka Takahashi, Keisuke Fujii, Yuki Hino, and Hisao Hayakawa, "Nonadiabatic Control of Geometric Pumping,'' Phys. Rev. Lett. 124, 150602 (2020); [arXiv:1909.02202].
Keisuke Fujii and Yusuke Nishida, "Hydrodynamics with spacetime-dependent scattering length,'' Phys. Rev. A 98, 063634 (2018); [arXiv:1807.07983].
Keisuke Fujii and Yusuke Nishida, "Low-energy effective field theory of superfluid 3He-B and its gyromagnetic and Hall responses,'' Ann. Phys. 395, 170 (2018); [arXiv:1610.06330].