Publications (13)
Symmetry Protected Topological Phases of Mixed States in the Doubled Space
Ruochen Ma, Alex Turzillo
The interplay of symmetry and topology in quantum many-body mixed states has recently garnered significant interest. In a phenomenon not seen in pure states, mixed states can exhib…
Edge physics at the deconfined transition between a quantum spin Hall insulator and a superconductor
Ruochen Ma, Liujun Zou, Chong Wang
We study the edge physics of the deconfined quantum phase transition (DQCP) between a spontaneous quantum spin Hall (QSH) insulator and a spin-singlet superconductor (SC). Although…
A theory of deconfined pseudo-criticality
Ruochen Ma, Chong Wang
It has been proposed that the deconfined criticality in -- the quantum phase transition between a Neel anti-ferromagnet and a valence-bond-solid (VBS) -- may actually be p…
Lieb-Schultz-Mattis Theorem with Long-Range Interactions
Ruochen Ma
We prove the Lieb-Schultz-Mattis theorem in -dimensional spin systems exhibiting spin rotation and lattice translation symmetries in the presence of local interactio…
Emergent anomaly of Fermi surfaces: a simple derivation from Weyl fermions
Ruochen Ma, Chong Wang
The Fermi liquid has an emergent low-energy symmetry that corresponds to charge conservation at each momentum on the Ferm surface. Recently Else, Thorngren and Senthil (ETS) argued…
Topological Phases with Average Symmetries: the Decohered, the Disordered, and the Intrinsic
Ruochen Ma, Jian-Hao Zhang, Zhen Bi +2
Global symmetries greatly enrich the landscape of topological quantum phases, playing an essential role from topological insulators to fractional quantum Hall effect. Topological p…