5 papers
Charge glass from supercooling topological-ordered liquid
Kouki Kimata, Harukuni Ikeda, Masafumi Udagawa
Topological order characterizes a class of quantum and classical many-body liquid states that escape the conventional classification by spontaneous symmetry breaking. Many properti…
Delocalization Induced by Enhanced Hyperuniformity in One-Dimensional Disordered Systems
Junmo Jeon, Harukuni Ikeda, Shiro Sakai
In one dimension, any disorder is traditionally believed to localize all states. We show that this paradigm breaks down under hyperuniform disorder, which suppresses long-wavelengt…
Interaction-free ergodicity-breaking driven by temporally hyperuniform noise
Harukuni Ikeda
We show that norm-conserving spin models driven by temporally hyperuniform noise exhibit a sharp ergodicity-breaking transition in the absence of interactions. In the nonergodic ph…
Quantum fluctuations can enhance or reduce positional uncertainty at finite temperature
Harukuni Ikeda
The uncertainty principle guarantees a non-zero value for the positional uncertainty, , even without thermal fluctuations. This implies that qua…
Comment on "A new universality class describes Vicsek's flocking phase in physical dimensions''
Harukuni Ikeda
In a recent preprint, ``A new universality class describes Vicsek's flocking phase in physical dimensions'', Patrick Jentsch and Chiu Fan Lee have computed the critical exponents o…