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5 papers · 1 filter
Temperature- and Size-dependence of Line shape of ESR spectra of XXZ antiferromagnetic chain
Hiroki Ikeuchi, Hans De Raedt, Sylvain Bertaina +1
The ESR (Electron Spin Resonance) spectrum of the XXZ spin chain with finite length shows a double-peak structure at high temperatures around the EPR (Electron Paramagnetic Resonan…
Computation of ESR spectra from the time evolution of the magnetization: comparison of autocorrelation and Wiener-Khinchin-relation based methods
Hiroki Ikeuchi, Hans De Raedt, Sylvain Bertaina +1
The calculation of finite temperature ESR spectra for concrete specified crystal configurations is a very important issue in the study of quantum spin systems. Although direct eval…
Numerical study on ESR by making use of Wiener-Khinchin relation in time domain
Hiroki Ikeuchi, Sylvain Bertaina, Seiji Miyashita
To evaluate ESR spectrum at finite temperatures for specified spatial configurations of spins is very important issue to study quantum spin systems. Although a direct numerical est…
Stationary states and fractional dynamics in systems with long range interactions
Tineke L. Van Den Berg, Duccio Fanelli, Xavier Leoncini
Dynamics of many-body Hamiltonian systems with long range interactions is studied, in the context of the so called HMF model. Building on the analogy with the related mean fiel…
Criticality in multicomponent spherical models : results and cautions
Jean-Noël Aqua, Michael E. Fisher
To enable the study of criticality in multicomponent fluids, the standard spherical model is generalized to describe an $\ns$-species hard core lattice gas. On introducing $\ns$ sp…