38 citations · 46 across the 2 of their papers we have counts for
2 papers
cond-mat.str-el1999★ 8 cited
Spin Chains in an External Magnetic Field. Closure of the Haldane Gap and Effective Field Theories
L. Campos Venuti, E. Ercolessi, G. Morandi +2
We investigate both numerically and analytically the behaviour of a spin-1 antiferromagnetic (AFM) isotropic Heisenberg chain in an external magnetic field. Extensive DMRG studies…
cond-mat.str-el1996★ 38 cited
Effective actions for spin ladders
S. Dell'Aringa, E. Ercolessi, G. Morandi +2
We derive a path-integral expression for the effective action in the continuum limit of an AFM Heisenberg spin ladder with an arbitrary number of legs. The map is onto an no…