Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Rasmussen, Alex"'
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 fields that arise as a result of gauging dipole or subsystem $U(1)$ sy
Externí odkaz:
http://arxiv.org/abs/2007.05539
Autor:
Rasmussen, Alex, Lu, Yuan-Ming
Motivated by recent progress in crystalline symmetry protected topological (SPT) phases of interacting bosons, we study topological crystalline insulators/superconductors (TCIs) of strongly interacting fermions. We construct a class of intrinsically
Externí odkaz:
http://arxiv.org/abs/1810.12317
Autor:
Rasmussen, Alex, Lu, Yuan-Ming
Publikováno v:
Phys. Rev. B 101, 085137 (2020)
Motivated by the recent discovery of higher-order topological insulators, we study their counterparts in strongly interacting bosons: `higher-order symmetry protected topological (HOSPT) phases'. While the usual (1st-order) SPT phases in d spatial di
Externí odkaz:
http://arxiv.org/abs/1809.07325
Publikováno v:
Phys. Rev. B 97, 195115 (2018)
We first propose a topological term that captures the "intertwinement" between the standard "$\sqrt{3} \times \sqrt{3}$" antiferromagnetic order (or the so-called 120$^\circ$ state) and the "$\sqrt{12}\times \sqrt{12}$" valence solid bond (VBS) order
Externí odkaz:
http://arxiv.org/abs/1710.04668
Recent proposal of the duality between the $N=2$ noncompact QED$_3$ and the easy-plane noncompact CP$^1$ (NCCP$^1$) model suggests that the deconfined quantum critical point (dQCP) between the easy-plane antiferromagnet and the VBS order on the squar
Externí odkaz:
http://arxiv.org/abs/1708.03050
Autor:
Rasmussen, Alex, Jermyn, Adam
Publikováno v:
Phys. Rev. B 97, 165141 (2018)
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 topological order of the pyrochlore U(1) spin liquid and to recent work b
Externí odkaz:
http://arxiv.org/abs/1703.04772
Motivated by recent studies of symmetry protected topological (SPT) phases, we explore the possible gapless quantum disordered phases in the $(2+1)d$ nonlinear sigma model defined on the Grassmannian manifold $\frac{U(N)}{U(n)\times U(N - n)}$ with a
Externí odkaz:
http://arxiv.org/abs/1605.05336
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 ice systems, or in a quantum dimer model on a bipartite $3d$ lattice.
Externí odkaz:
http://arxiv.org/abs/1601.08235
Publikováno v:
New J. Phys. 17, 075010 (2015)
In this paper we construct bosonic short range entangled (SRE) states in all spatial dimensions by coupling a $Z_2$ gauge field to fermionic SRE states with the same symmetries, and driving the $Z_2$ gauge field to its confined phase. We demonstrate
Externí odkaz:
http://arxiv.org/abs/1404.6256
Publikováno v:
Phys. Rev. Lett. 112, 247202 (2014)
We demonstrate the following conclusion: If $|\Psi\rangle$ is a $1d$ or $2d$ nontrivial short range entangled state, and $|\Omega \rangle$ is a trivial disordered state defined on the same Hilbert space, then the following quantity (so called strange
Externí odkaz:
http://arxiv.org/abs/1312.0626