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Bond algebraic liquid phase in strongly correlated multiflavor cold atom systems
Cenke Xu, Matthew P. A. Fisher
When cold atoms are trapped in a square or cubic optical lattice, it should be possible to pump the atoms into excited level orbitals within each well. Following earlier work,…
Topological Entanglement Entropy from the Holographic Partition Function
Paul Fendley, Matthew P. A. Fisher, Chetan Nayak
We study the entropy of chiral 2+1-dimensional topological phases, where there are both gapped bulk excitations and gapless edge modes. We show how the entanglement entropy of both…
Critical spin liquid at 1/3 magnetization in a spin-1/2 triangular antiferromagnet
Jason Alicea, Matthew P. A. Fisher
Although magnetically ordered at low temperatures, the spin-1/2 triangular antiferromagnet Cs_2CuCl_4 exhibits remarkable spin dynamics that strongly suggest proximity to a spin li…
Edge states and tunneling of non-Abelian quasiparticles in the nu=5/2 quantum Hall state and p+ip superconductors
Paul Fendley, Matthew P. A. Fisher, Chetan Nayak
We study quasiparticle tunneling between the edges of a non-Abelian topological state. The simplest examples are a p+ip superconductor and the Moore-Read Pfaffian non-Abelian fract…
Dynamical Disentanglement across a Point Contact in a Non-Abelian Quantum Hall State
Paul Fendley, Matthew P. A. Fisher, Chetan Nayak
We analyze tunneling of non-Abelian quasiparticles between the edges of a quantum Hall droplet at Landau level filling fraction nu=5/2, assuming that the electrons in the first exc…
Graphene integer quantum Hall effect in the ferromagnetic and paramagnetic regimes
Jason Alicea, Matthew P. A. Fisher
Starting from the graphene lattice tight-binding Hamiltonian with an on-site U and long-range Coulomb repulsion, we derive an interacting continuum Dirac theory governing the low-e…