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Topological Goldstone phases of matter
Dominic V. Else
We consider the possibility for phases of matter in which a continuous symmetry is spontaneously broken in a \emph{topologically non-trivial} way, which, roughly, means that the ac…
Strange metals as ersatz Fermi liquids
Dominic V. Else, T. Senthil
A long standing mystery of fundamental importance in correlated electron physics is to understand strange non-Fermi liquid metals that are seen in diverse quantum materials. A stri…
Non-Fermi liquids as ersatz Fermi liquids: general constraints on compressible metals
Dominic V. Else, Ryan Thorngren, T. Senthil
A system with charge conservation and lattice translation symmetry has a well-defined filling , which is a real number representing the average charge per unit cell. We show tha…
Long-lived interacting phases of matter protected by multiple time-translation symmetries in quasiperiodically-driven systems
Dominic V. Else, Wen Wei Ho, Philipp T. Dumitrescu
We show how a large family of interacting nonequilibrium phases of matter can arise from the presence of multiple time-translation symmetries, which occur by quasiperiodically driv…
Topological theory of Lieb-Schultz-Mattis theorems in quantum spin systems
Dominic V. Else, Ryan Thorngren
The Lieb-Schultz-Mattis (LSM) theorem states that a spin system with translation and spin rotation symmetry and half-integer spin per unit cell does not admit a gapped symmetric gr…
Crystalline topological phases as defect networks
Dominic V. Else, Ryan Thorngren
A crystalline topological phase is a topological phase with spatial symmetries. In this work, we give a very general physical picture of such phases: a topological phase with spati…