3 papers
hep-th2026
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…
cond-mat.quant-gas2026
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…
hep-th2024
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…