104 citations · 203 across the 2 of their papers we have counts for
3 papers
cond-mat.str-el2008★ 99 cited
Hierarchical mean-field approach to the - Heisenberg model on a square lattice
L. Isaev, G. Ortiz, J. Dukelsky
We study the quantum phase diagram and excitation spectrum of the frustrated - spin-1/2 Heisenberg Hamiltonian. A hierarchical mean-field approach, at the heart of which…
astro-ph2006★ 104 cited
VLT/UVES spectroscopy of Wray 977, the hypergiant companion to the X-ray pulsar GX301-2
L. Kaper, A. van der Meer, F. Najarro
Model atmosphere fits to high-resolution optical spectra of Wray 977 confirm the B hypergiant classification of the massive companion to the X-ray pulsar GX301-2. The models give a…
astro-ph2005
Detailed spectroscopic analysis of the Trapezium cluster stars inside the Orion nebula
S. Simon-Diaz, A. Herrero, C. Esteban +1
We present the results of a spectroscopic analysis of the Trapezium cluster stars inside the Orion Nebula. The rotational velocities have been obtained using Fourier analysis metho…