Lord Flowers: 1924-2010 OBITUARY

ADVANCES IN PHYSICS 59:6 (2010) PII 927726568

Low-temperature dynamical structure factor of the two-leg spin-1/2 Heisenberg ladder

PHYSICAL REVIEW B 82:10 (2010) ARTN 104417

Authors:

WD Goetze, U Karahasanovic, FHL Essler

Mesoscopic modelling of colloids in chiral nematics.

Faraday Discuss 144 (2010) 159-169

Authors:

Miha Ravnik, Gareth P Alexander, Julia M Yeomans, Slobodan Zumer

Abstract:

We present numerical modelling of colloidal particles in chiral nematics with cubic symmetry (blue phases) within the framework of the Landau-de Gennes free energy. The interaction potential of a single, nano-sized colloidal particle with a -1/2 disclination line is calculated as a generic trapping mechanism for particles within the cholesteric blue phases. The interaction potential is shown to be highly anisotropic and have threefold rotational symmetry. We discuss the equilibration of the colloidal texture with respect to particle positions and the unit cell size of the blue phase. We also describe how preservation of the liquid crystal volume and the number of particles allows blue phase colloidal structures with different unit cell sizes and configurations to be compared numerically.

Parity Effects in the Scaling of Block Entanglement in Gapless Spin Chains

PHYSICAL REVIEW LETTERS 104:9 (2010) ARTN 095701

Authors:

Pasquale Calabrese, Massimo Campostrini, Fabian Essler, Bernard Nienhuis

Quantum Hall wave functions based on S3 conformal field theories

PHYSICAL REVIEW B 81:12 (2010) ARTN 121301

Authors:

Steven H Simon, Edward H Rezayi, Nicolas Regnault