461 citations · 1.9k across the 27 of their papers we have counts for
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Spontaneous plaquette dimerization in the Heisenberg model
Luca Capriotti, Sandro Sorella
We investigate the non magnetic phase of the spin-half frustrated Heisenberg antiferromagnet on the square lattice using exact diagonalization (up to 36 sites) and quantum Monte Ca…
Finite size Spin Wave theory of the triangular Heisenberg model
Adolfo E. Trumper, Luca Capriotti, Sandro Sorella
We present a finite size spin wave calculation on the Heisenberg antiferromagnet on the triangular lattice focusing in particular on the low-energy part of the excitation spectrum.…
Green Function Monte Carlo with Stochastic Reconfiguration: an effective remedy for the sign problem disease
S. Sorella, L. Capriotti
A recent technique, proposed to alleviate the ``sign problem disease'', is discussed in details. As well known the ground state of a given Hamiltonian can be obtained by applyi…
Thermodynamics of the quantum easy-plane antiferromagnet on the triangular lattice
L. Capriotti, A. Cuccoli, V. Tognetti +2
The classical XXZ triangular-lattice antiferromagnet (TAF) shows both an Ising and a BKT transition, related to the chirality and the in-plane spin components, respectively. In thi…
Long range Neel order in the triangular Heisenberg model
L. Capriotti, A. Trumper, S. Sorella
We have studied the Heisenberg model on the triangular lattice using several Quantum Monte Carlo (QMC) techniques (up to 144 sites), and exact diagonalization (ED) (up to 36 sites)…