557 citations
- Goddard Space Flight CenterUS13 papers
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- Center for Astrophysics Harvard & SmithsonianUS11 papers
- Northwestern UniversityUS10 papers
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4 papers · 1 filter
Hubble Space Telescope WFPC-2 Imaging of Cassiopeia A
Robert A. Fesen, Jon A. Morse, Roger A. Chevalier +4
The young SNR Cassiopeia A was imaged with WFPC-2 through four filters selected to capture the complete velocity range of the remnant's main shell in several important emission lin…
Spinons in a Crossed-Chains Model of a 2D Spin Liquid
Oleg A. Starykh, Rajiv R. P. Singh, Gregory C. Levine
Using Random Phase Approximation, we show that a crossed-chains model of a spin-1/2 Heisenberg spins, with frustrated interchain couplings, has a non-dimerized spin-liquid ground s…
Localization transition in the Mermin model
Gregory Levine, V. N. Muthukumar
We study the dynamical properties of the Mermin model, a simple quantum dissipative model with a monochromatic environment, using analytical and numerical methods. Our numerical re…
Comment on "Critical spin dynamics of the 2D quantum Heisenberg antiferromagnets: Sr2CuO2Cl2 and Sr2Cu3O4Cl2"
Subir Sachdev, Oleg A. Starykh
We compare the neutron measurements of Kim et al. (cond-mat/0012239) on two-dimensional, S=1/2 antiferromagnets with the continuum quasiclassical theory of S. Sachdev and O.A. Star…