3 papers
cond-mat.mes-hall2002
Comment on "Tunnel Window's Imprint on Dipolar Field Distributions"
P. C. E. Stamp, I. S. Tupitsyn
In a recent letter Alonso et al. (Phys. Rev. Lett. 87, 097205 (2001)) present Monte Carlo simulations for interacting dipoles. Short-time relaxation was caused by a simple noise fi…
cond-mat2000
Quantum Tunneling of Magnetization in Molecular Complexes with Large Spins. Effect of the Environment
Igor Tupitsyn, Bernard Barbara
We review the present state of theory and experiments on the quantum tunneling of magnetization in mesoscopic spin systems. Most attention is paid to the relaxation of magnetizatio…
cond-mat1999
Tunneling problems by quantum Monte Carlo
Nikolai Prokof'ev, Boris Svistunov, Igor Tupitsyn
We develop a new numerical scheme which allows precise solution of coherent tunneling problems, i.e., problems with exponentially small transition amplitudes between quasidegenerat…