26 citations · 88 across the 7 of their papers we have counts for
8 papers
Quantization through dissipation: impurity states and the optical quantum Hall effect
Zhenisbek Tagay, Ahmed Abouelkomsan, Yugo Onishi +4
The integer quantum Hall effect remains the most paradigmatic and remarkable example of exact quantization in condensed matter physics. Its Hall conductivity is fixed to $…
Revealing quantum geometry of solids through vacuum fluctuations
Yugo Onishi, Liang Fu
We show that quantum fluctuations of electromagnetic fields induce an extensive zero-point energy in insulators. The zero-point energy density is proportional to the quantum fluctu…
Emergent curved space and gravitational lensing in quantum materials
Yugo Onishi, Nisarga Paul, Liang Fu
We show that an effective gravitational field naturally emerges in quantum materials with long-wavelength spin (or pseudospin) textures. When the itinerant electrons' spin strongly…
Geometric bound on structure factor
Yugo Onishi, Alexander Avdoshkin, Liang Fu
We show that a quadratic form of quantum geometric tensor in -space sets a bound on the term in the static structure factor at small . Bands that saturate…
Topological bound on structure factor
Yugo Onishi, Liang Fu
We show that the static structure factor of general many-body systems with symmetry has a lower bound determined only by the ground state Chern number. Our bound relies only…
Quantum weight: A fundamental property of quantum many-body systems
Yugo Onishi, Liang Fu
We introduce the concept of quantum weight as a ground state property of quantum many-body systems that is encoded in the static structure factor and characterizes density fluctuat…
Quantum weight
Yugo Onishi, Liang Fu
We introduce the concept of quantum weight as a fundamental property of insulating states of matter that is encoded in the ground-state static structure and measures quantum fluctu…
Universal relation between energy gap and dielectric constant
Yugo Onishi, Liang Fu
We establish a universal relation between the energy gap and the static dielectric constant for all insulating states. This relation yields an upper bound on the energy gap, which…