3 papers
cond-mat.supr-con2025
Geometric Superfluid Weight in Quasicrystals
Junsong Sun, Huaiming Guo, Bohm-Jung Yang
We study the geometric contribution to the superfluidity in quasicrystals in which the conventional momentum-space quantum geometric tensor cannot be defined due to the lack of tra…
cond-mat.mes-hall2024
Inner non-Hermitian skin effect on Bethe lattice
Junsong Sun, Chang-An Li, Shiping Feng +1
We investigate the non-Hermitian Su-Schrieffer-Heeger (SSH) model on Bethe lattice, revealing a novel localization phenomenon coined inner non-Hermitian skin effect. This effect is…
cond-mat.mes-hall2024
Non-Hermitian Quantum Fractals
Junsong Sun, Chang-An Li, Qingyang Guo +5
The first quantum fractal discovered in physics is the Hofstadter butterfly. It stems from large external magnetic fields. We discover instead a new class of non-Hermitian quantum…