Publications (12)
Classification and Description of Bosonic Symmetry Protected Topological Phases with semiclassical Nonlinear Sigma models
Zhen Bi, Alex Rasmussen, Kevin Slagle +1
In this paper we systematically classify and describe bosonic symmetry protected topological (SPT) phases in all physical spatial dimensions using semiclassical nonlinear Sigma mod…
Higher-form Gauge Symmetries in Multipole Topological Phases
Oleg Dubinkin, Alex Rasmussen, Taylor L. Hughes
In this article we study field-theoretical aspects of multipolar topological insulators. Previous research has shown that such systems naturally couple to higher-rank tensor gauge…
Stable Interacting (2 + 1)d Conformal Field Theories at the Boundary of a class of (3 + 1)d Symmetry Protected Topological Phases
Zhen Bi, Alex Rasmussen, Yoni BenTov +1
Motivated by recent studies of symmetry protected topological (SPT) phases, we explore the possible gapless quantum disordered phases in the nonlinear sigma model defined…
Gapless Topological Order, Gravity, and Black Holes
Alex Rasmussen, Adam Jermyn
In this work we demonstrate that linearized gravity exhibits gapless topological order with an extensive ground state degeneracy. This phenomenon is closely related both to the top…
Wave Function and Strange Correlator of Short Range Entangled states
Yi-Zhuang You, Zhen Bi, Alex Rasmussen +2
We demonstrate the following conclusion: If is a or nontrivial short range entangled state, and is a trivial disordered state defined on the sam…
Bridging Fermionic and Bosonic Short Range Entangled States
Yi-Zhuang You, Zhen Bi, Alex Rasmussen +2
In this paper we construct bosonic short range entangled (SRE) states in all spatial dimensions by coupling a gauge field to fermionic SRE states with the same symmetries, an…
Classification and construction of higher-order symmetry protected topological phases of interacting bosons
Alex Rasmussen, Yuan-Ming Lu
Motivated by the recent discovery of higher-order topological insulators, we study their counterparts in strongly interacting bosons: `higher-order symmetry protected topological (…
Intrinsically interacting topological crystalline insulators and superconductors
Alex Rasmussen, Yuan-Ming Lu
Motivated by recent progress in crystalline symmetry protected topological (SPT) phases of interacting bosons, we study topological crystalline insulators/superconductors (TCIs) of…
Emergent Symmetry and Tricritical Points near the deconfined Quantum Critical Point
Chao-Ming Jian, Alex Rasmussen, Yi-Zhuang You +1
Recent proposal of the duality between the noncompact QED and the easy-plane noncompact CP (NCCP) model suggests that the deconfined quantum critical point (dQCP)…
Deconfined Quantum Critical Point on the Triangular Lattice
Chao-Ming Jian, Alex Thomson, Alex Rasmussen +2
We first propose a topological term that captures the "intertwinement" between the standard "" antiferromagnetic order (or the so-called 120 state…
Stable Gapless Bose Liquid Phases without any Symmetry
Alex Rasmussen, Yi-Zhuang You, Cenke Xu
It is well-known that a stable algebraic spin liquid state (or equivalently an algebraic Bose liquid (ABL) state) with emergent gapless photon excitations can exist in quantum spin…
Line defects in Three dimensional Symmetry Protected Topological Phases
Zhen Bi, Alex Rasmussen, Cenke Xu
A 3d symmetry protected topological phase, by definition must have symmetry protected nontrivial boundary states, namely its 2d boundary must be either gapless or degenerate. In th…