192 citations · 956 across the 29 of their papers we have counts for
30 papers
Magnetic Symmetries and the Structure of Correlation Functions in Quantum Field Theory
Masaru Hongo, Kentaro Nishimura
Quantum field theories in the presence of a static and uniform external magnetic field possess two characteristic spatial symmetries: magnetic translations and magnetic rotation. W…
Effective theory of surface oscillations in self-bound superfluid droplets
Jun Mitsuhashi, Keisuke Fujii, Masaru Hongo
We investigate the low-energy dynamics of small-amplitude surface oscillations of spherical superfluid droplets in vacuum. Starting from the effective field theory of superfluid ph…
Schwinger-Keldysh effective action for hydrodynamics with approximate symmetries
Masaru Hongo, Noriyuki Sogabe, Mikhail A. Stephanov +1
We study the hydrodynamic theories with approximate symmetries in the recently developed effective action approach on the Schwinger-Keldysh (SK) contour. We employ the method of sp…
Spin relaxation rate for baryons in thermal pion gas
Yoshimasa Hidaka, Masaru Hongo, Mikhail Stephanov +1
We study the relaxation dynamics of the spin polarization of baryons (nucleon and -baryon), in a thermal pion gas as a simple model of the hadronic phase of the QCD plasma produ…
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…
Universal van der Waals Force Between Heavy Polarons in Superfluids
Keisuke Fujii, Masaru Hongo, Tilman Enss
We investigate the long-range behavior of the induced Casimir interaction between two spinless heavy impurities, or polarons, in superfluid cold atomic gases. With the help of effe…
Spin relaxation rate for heavy quarks in weakly coupled QCD plasma
Masaru Hongo, Xu-Guang Huang, Matthias Kaminski +2
We compute the relaxation rate of the spin density of heavy quarks in a perturbative QCD plasma to leading-log order in the coupling constant . The spin relaxation rate in…
Universal Properties of Weakly Bound Two-Neutron Halo Nuclei
Masaru Hongo, Dam Thanh Son
We construct an effective field theory of a two-neutron halo nucleus in the limit where the two-neutron separation energy and the neutron-neutron two-body virtual energy …
Anomaly-induced edge currents in hydrodynamics with parity anomaly
Takuya Furusawa, Masaru Hongo
In this paper, we discuss relativistic hydrodynamics for a massless Dirac fermion in dimensions, which has the parity anomaly -- a global 't Hooft anomaly between $\mathrm{…
Effective field theory of fluctuating wall in open systems: from a kink in Josephson junction to general domain wall
Keisuke Fujii, Masaru Hongo
We investigate macroscopic behaviors of fluctuating domain walls in nonequilibrium open systems with the help of the effective field theory based on symmetry. Since the domain wall…
Quantum hydrodynamics from local thermal pure states
Shoichiro Tsutsui, Masaru Hongo, Shintaro Sato +1
We provide a pure state formulation for hydrodynamic dynamics of isolated quantum many-body systems. A pure state describing quantum systems in local thermal equilibrium is constru…
Relativistic spin hydrodynamics with torsion and linear response theory for spin relaxation
Masaru Hongo, Xu-Guang Huang, Matthias Kaminski +2
Using the second law of local thermodynamics and the first-order Palatini formalism, we formulate relativistic spin hydrodynamics for quantum field theories with Dirac fermions, su…
Analytical WKB theory for high-harmonic generation and its application to massive Dirac electrons
Hidetoshi Taya, Masaru Hongo, Tatsuhiko N. Ikeda
We propose an analytical approach to high-harmonic generation (HHG) for nonperturbative low-frequency and high-intensity fields based on the (Jeffreys-)Wentzel-Kramers-Brillouin (W…
Effective field theory of magnon: Dynamics in chiral magnets and Schwinger mechanism
Masaru Hongo, Toshiaki Fujimori, Tatsuhiro Misumi +2
We develop the effective field theoretical descriptions of spin systems in the presence of symmetry-breaking effects: the magnetic field, single-ion anisotropy, and Dzyaloshinskii-…
Microscopic theory of the fluctuating hydrodynamics in nonlinear lattices
Keiji Saito, Masaru Hongo, Abhishek Dhar +1
The theory of fluctuating hydrodynamics has been an important tool for analyzing macroscopic behavior in nonlinear lattices. However, despite its practical success, its microscopic…
Revisiting relativistic magnetohydrodynamics from quantum electrodynamics
Masaru Hongo, Koichi Hattori
We provide a statistical mechanical derivation of relativistic magnetohydrodynamics on the basis of the -dimensional quantum electrodynamics; the system endowed with the mag…
Global anomaly matching in higher-dimensional model
Takuya Furusawa, Masaru Hongo
We investigate 't Hooft anomalies in the model in spacetime dimensions higher than two and identify two types of anomalies: One is a mixed anomaly between the $…
Effective Lagrangian for Nambu-Goldstone modes in nonequilibrium open systems
Masaru Hongo, Suro Kim, Toshifumi Noumi +1
We develop the effective field theory of diffusive Nambu-Goldstone (NG) modes associated with spontaneous internal symmetry breaking taking place in nonequilibrium open systems. Th…
Instantons in Chiral Magnets
Masaru Hongo, Toshiaki Fujimori, Tatsuhiro Misumi +2
We exhaustively construct instanton solutions and elucidate their properties in one-dimensional anti-ferromagnetic chiral magnets based on the nonlinear sigma model descript…
Anomaly-induced transport phenomena from the imaginary-time formalism
Masaru Hongo, Yoshimasa Hidaka
A derivation of the anomaly-induced transport phenomena---the chiral magnetic/vortical effect---is revisited based on the imaginary-time formalism of quantum field theory. Consider…
Phase structure of the twisted flag sigma model on
Masaru Hongo, Tatsuhiro Misumi, Yuya Tanizaki
We investigate the phase structure of the compactified -dimensional nonlinear flag sigma model with respect to two -terms. Based on the circle compactification…
Fate of spin polarization in a relativistic fluid: An entropy-current analysis
Koichi Hattori, Masaru Hongo, Xu-Guang Huang +2
We derive relativistic hydrodynamic equations with a dynamical spin degree of freedom on the basis of an entropy-current analysis. The first and second laws of local thermodynamics…
Effective field theory of time-translational symmetry breaking in nonequilibrium open system
Masaru Hongo, Suro Kim, Toshifumi Noumi +1
We develop the effective field theoretical (EFT) approach to time-translational symmetry breaking of nonequilibrium open systems based on the Schwinger-Keldysh formalism. In the Sc…