Zobrazeno 1 - 10
of 75
pro vyhledávání: '"Vugmeister, B."'
Autor:
Abalmasov, V. A., Vugmeister, B. E.
Publikováno v:
Phys. Rev. E 107 (2023) 034124
We study the J1-J2 Ising model on the square lattice using the random local field approximation (RLFA) and Monte Carlo (MC) simulations for various values of the ratio p = J2/|J1| with antiferromagnetic coupling J2, ensuring spin frustration. RLFA pr
Externí odkaz:
http://arxiv.org/abs/2205.00803
Autor:
Vugmeister, B. E., Rabitz, H.
In a recent paper (A.E. Glazounov and A.K. Tagantsev, Phys.Rev. Lett. 85, 2192 (2000)) it has been proposed a phenomenological model of the dynamic non-linear response in relaxor ferroelectrics based on the averaging of the Landau-Khalatnikov equatio
Externí odkaz:
http://arxiv.org/abs/cond-mat/0011211
Autor:
Vugmeister, B. E., Rabitz, H.
We have developed a dynamical model for the dielectric response in relaxor ferroelectrics which explicitly takes into account the coexistence of the critical slowing down and glassy freezing. The application of the model to the experiment in PMN allo
Externí odkaz:
http://arxiv.org/abs/cond-mat/9906403
We analyze a stimulated revival (echo) effect for the breathing modes of the atomic oscillations in optical lattices. The effect arises from the dephasing due to the weak anharmonicity being partly reversed in time by means of additional parametric e
Externí odkaz:
http://arxiv.org/abs/cond-mat/9712254
Autor:
Vugmeister, B. E., Rabitz, H.
The dielectric response in relaxor ferroelectrics is analyzed in the framework a model for the polarization dynamics in the presence of polar clusters. We associate the origin of polar clusters with the atoms displaced from their centro-symmerical po
Externí odkaz:
http://arxiv.org/abs/cond-mat/9711235
The tails of prehistory probability density in nonlinear multistable stochastic systems driven by white Gaussian noise, which has been a subject of recent study, are analyzed by employing the concepts of nonstationary optimal fluctuations. Results of
Externí odkaz:
http://arxiv.org/abs/cond-mat/9704199
We analyze the probabilities of large infrequent fluctuations in systems driven by external fields. In a broad range of the field magnitudes, the logarithm of the fluctuation probability is linear in the field magnitude, and the response can be chara
Externí odkaz:
http://arxiv.org/abs/cond-mat/9704036
Akademický článek
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Publikováno v:
Journal of Applied Physics; 12/15/2001, Vol. 90 Issue 12, p6345, 12p, 5 Graphs
Publikováno v:
Journal of Applied Physics; 4/15/1996, Vol. 79 Issue 8, p6143, 3p, 2 Graphs