R Giachetti, V Tognetti - Physical review letters, 1985 - APS
The path-integral method is used for determination of the quantum corrections to the free energy of nonlinear systems. All quantum effects of the harmonic part of the potential are …
R Giachetti, V Tognetti - Physical Review B, 1986 - APS
The path-integral approach is used for determining quantum corrections to the free energy of nonlinear systems. An effective potential, to be inserted in the configurational integral, is …
The time-dependent behavior of the classical, ferromagnetic xy chain in a symmetry- breaking magnetic field was studied using a very fast, vectorized spin-dynamics method …
AMC Tinus, WJM De Jonge, K Kopinga - Physical Review B, 1985 - APS
The field dependence of the magnetic heat capacity of (C 6 H 11 NH 3) CuBr 3 (CHAB), which is an ideal ferromagnetic S=(1/2) chain system with XY anisotropy, is compared with …
An exact numerical-transfer-matrix method is used to calculate the thermodynamic properties of an easy-plane Heisenberg ferromagnet with in-plane magnetic field. The …
Low-temperature specific heat C (T) and zero-field muon spin resonance (μ+ SR) measurements were performed in Gd (hfac) 3 NITiPr, a quasi-one-dimensional molecular …
We compare the exact quantum sine-Gordon (SG) specific-heat calculation of Fowler and Zotos [Phys. Rev. B 24, 2634 (1981); 25, 2806 (1982)] with measurements of CsNiF 3 …
T Tsuzuki, K Sasaki - Progress of Theoretical Physics …, 1988 - academic.oup.com
The statistical mechanics of the soliton-bearing nonlinear Klein-Gordon systems in one dimension is reviewed. Several different theoretical approaches are discussed: the transfer …
M Paściak, M Wołcyrz, A Pietraszko - Physical Review B—Condensed Matter …, 2008 - APS
The local structure of (CH 3) 4 NCdCl 3 (TMCC) has been determined by a configurational- bias reverse Monte Carlo method applied to x-ray diffuse scattering data. The following two …