192 citations · 1.9k across the 43 of their papers we have counts for
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Dirac Kondo effect under magnetic catalysis
Koichi Hattori, Daiki Suenaga, Kei Suzuki +1
We develop a mean-field theory of a novel Kondo effect emerging in systems without a Fermi surface, which instead emerges under strong magnetic fields. We determine the magnitude o…
Euler-Heisenberg Lagrangian under an axial gauge field
Patrick Copinger, Koichi Hattori, Di-Lun Yang
Augmentations to the Euler-Heisenberg Lagrangian (QED one-loop effective action in homogeneous electromagnetic fields) under a constant background axial gauge are examined. Two spe…
New developments in relativistic magnetohydrodynamics
Koichi Hattori, Masaru Hongo, Xu-Guang Huang
Relativistic magnetohydrodynamics (RMHD) provides an extremely useful description of the low-energy long-wavelength phenomena in a variety of physical systems from quark-gluon plas…
Gyrohydrodynamics: Relativistic spinful fluid with strong vorticity
Zheng Cao, Koichi Hattori, Masaru Hongo +2
We develop a relativistic (quasi-)hydrodynamic framework, dubbed the gyrohydrodynamics, to describe fluid dynamics of many-body systems with spin under strong vorticity based on en…
In-medium polarization tensor in strong magnetic fields (II): Axial Ward identity at finite temperature and density
Koichi Hattori, Kazunori Itakura
We investigate the axial Ward identity (AWI) for massive fermions in strong magnetic fields. The divergence of the axial-vector current is computed at finite temperature and/or den…
In-medium polarization tensor in strong magnetic fields (I): Magneto-birefringence at finite temperature and density
Koichi Hattori, Kazunori Itakura
We investigate in-medium polarization effects of the fermion and antifermion pairs at finite temperature and density in strong magnetic fields within the lowest Landau level approx…