There are two prominent applications of the mathematical concept of topology to the physics
of materials: band topology, which classifies different topological insulators and semimetals …

We are investigating the inviscid limit of the Navier–Stokes equation, and we find previously
unknown anomalous terms in Hamiltonian, Dissipation, and Helicity, which survive this limit …

A bstract The spontaneous breaking of a U (1) symmetry via an intermediate discrete
symmetry may yield a hybrid topological defect of domain walls bounded by cosmic strings …

A bstract We explore a variety of composite topological structures that arise from the
spontaneous breaking of SO (10) to SU (3) c× U (1) em via one of its maximal subgroups SU …

A bstract We discuss the appearance of topological structures from the spontaneous
breaking of E 6 to the Standard Model via its maximal subgroup SO (10)× U (1) ψ. They …

In the paper “Life, the Universe, and everything—42 fundamental questions,” Roland Allen
and Suzy Lidström presented personal selection of the fundamental questions. Here, based …

In superfluid He 3-B confined in a slab geometry, domain walls between regions of different
order parameter orientation are predicted to be energetically stable. Formation of the …

A bstract We employ a variety of symmetry breaking patterns in SO (10) and E 6 Grand
Unified Theories to demonstrate the appearance of topological defects including magnetic …

We report the observation of spin domain walls bounded by half-quantum vortices (HQVs) in
a spin-1 Bose-Einstein condensate with antiferromagnetic interactions. A spinor condensate …

The post-inflationary breaking of Peccei-Quinn (PQ) symmetry can lead to the cosmic
domain wall catastrophe. In this paper we show how to avoid domain walls by implementing …