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Open AccessYukawa-Lorentz symmetry in non-Hermitian Dirac materials
Lorentz space–time symmetry represents a unifying feature of the fundamental forces, typically manifest at sufficiently high energies, while in quantum materials it emerges in the deep low-energy regime. Howev...
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Open AccessQuantum electrodynamics of non-Hermitian Dirac fermions
We develop an effective quantum electrodynamics for non-Hermitian (NH) Dirac materials interacting with photons. These systems are described by nonspatial symmetry protected Lorentz invariant NH Dirac operator...
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Open AccessEmergent metallicity at the grain boundaries of higher-order topological insulators
Topological lattice defects, such as dislocations and grain boundaries (GBs), are ubiquitously present in the bulk of quantum materials and externally tunable in metamaterials. In terms of robust modes, locali...
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Article
Open AccessInner skin effects on non-Hermitian topological fractals
Non-Hermitian (NH) crystals, quasicrystals, and amorphous network display an accumulation of a macroscopic number of states near one of its specific interfaces with vacuum, such as edge, surface, hinge, or cor...
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Article
Open AccessProjected topological branes
Nature harbors crystals of dimensionality (d) only up to three. Here we introduce the notion of projected topological branes (PTBs): Lower-dimensional branes embedded in higher-dimensional parent topological crys...
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Open AccessAnomalous and normal dislocation modes in Floquet topological insulators
Electronic bands featuring nontrivial bulk topological invariant manifest through robust gapless modes at the boundaries, e.g., edges and surfaces. As such this bulk-boundary correspondence is also operative i...
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Open AccessEmergent chiral symmetry in a three-dimensional interacting Dirac liquid
We compute the effects of strong Hubbardlike local electronic interactions on three-dimensional four-component massless Dirac fermions, which in a noninteracting system possess a microscopic global U(1) ⊗ SU(2...
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Open AccessMagnetotransport in multi-Weyl semimetals: a kinetic theory approach
We study the longitudinal magnetotransport in three-dimensional multi-Weyl semimetals, constituted by a pair of (anti)-monopole of arbitrary integer charge (n), with n = 1,2 and 3 in a crystalline environment. Fo...
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Open AccessUniversal optical conductivity of a disordered Weyl semimetal
Topological Weyl semimetals, besides manifesting chiral anomaly, can also accommodate a disorder-driven unconventional quantum phase transition into a metallic phase. A fundamentally and practically important ...
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Open AccessEmergent Lorentz symmetry near fermionic quantum critical points in two and three dimensions
We study the renormalization group flow of the velocities in the field theory describing the coupling of the massless quasi-relativistic fermions to the bosons through the Yukawa coupling, as well as with both...
