The discovery of the quantum spin Hall effect and topological insulators more than a decade
ago has revolutionized modern condensed matter physics. Today, the field of topological …

Topological insulators have become one of the most active research areas in condensed
matter physics. This article reviews progress on the topic of electronic correlation effects in …

Emergence of exceptional points in two dimensions is one of the remarkable phenomena in
non-Hermitian systems. We here elucidate the impacts of symmetry on the non-Hermitian …

Topological insulators represent a new quantum state of matter which is characterized by
peculiar edge or surface states that show up due to a topological character of the bulk wave …

We report a quasidifferential upper limit on the extremely-high-energy (EHE) neutrino flux
above 5× 10 6 GeV based on an analysis of nine years of IceCube data. The astrophysical …

We analyze a two-dimensional Kondo lattice model with special emphasis on non-Hermitian
properties of the single-particle spectrum, following a recent proposal by Kozii and Fu. Our …

We report constraints on the sources of ultrahigh-energy cosmic rays (UHECRs) above 1 0 9
GeV, based on an analysis of seven years of IceCube data. This analysis efficiently selects …

We propose a new correlated topological state, which we call a higher-order topological
Mott insulator (HOTMI). This state exhibits a striking bulk-boundary correspondence due to …

Characteristic patterns of cosmic neutrino spectrum reported by the IceCube Collaboration
and long-standing inconsistency between theory and experiment in muon anomalous …

We analyze a diamond-lattice Hubbard model with the spatially modulated Hubbard
interaction. Our dynamical mean-field analysis with special emphasis on non-Hermitian …