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cond-mat.quant-gas2026
Anomalous tunneling as a low-energy theorem for Nambu-Goldstone modes
Keisuke Fujii, Daichi Kagamihara, Masaru Hongo
Anomalous tunneling refers to the phenomenon in which the transmission coefficient through a potential barrier approaches unity as the energy of an incident particle or quasipartic…
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…