Avalanches and perturbation theory in the random-field Ising model

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Hysteresis and Avalanches in the Random Field Ising Model

2002 Acknowledgments I am deeply indebted to my thesis advisers Deepak Dhar for his constant invaluable guidance and encouragement throughout the last five years. His patience and persistence, insights into various problems, critical thinking and insistence on clarity have been most useful and inspiring. My words will never be adequate to express my gratitude towards him. Mustansir has always b...

متن کامل

Theory of the Random Field Ising Model

A review is given on some recent developments in the theory of the Ising model in a random field. This model is a good representation of a large number of impure materials. After a short repetition of earlier arguments, which prove the absence of ferromagnetic order in d ≤ 2 space dimensions for uncorrelated random fields, we consider different random field correlations and in particular the ge...

متن کامل

Hysteresis and avalanches in the random anisotropy Ising model

The behavior of the random anisotropy Ising model at T50 under local relaxation dynamics is studied. The model includes a dominant short-range ferromagnetic interaction and assumes an infinite anisotropy at each site along local anisotropy axes which are randomly aligned. As a consequence, some of the effective interactions become antiferromagneticlike and frustration appears. Two different ran...

متن کامل

Weighted Mean Field Theory for the Random Field Ising Model

We consider the mean field theory of the Random Field Ising Model obtained by weighing the many solutions of the mean field equations with Boltzmann-like factors. These solutions are found numerically in three dimensions and we observe critical behavior arising from the weighted sum. The resulting exponents are calculated.

متن کامل

Hysteresis and avalanches in the T=0 random-field Ising model with two-spin-flip dynamics

We study the nonequilibrium behavior of the three-dimensional Gaussian random-field Ising model at T=0 in the presence of a uniform external field using a two-spin-flip dynamics. The deterministic, historydependent evolution of the system is compared with the one obtained with the standard one-spin-flip dynamics used in previous studies of the model. The change in the dynamics yields a signific...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Journal of Statistical Mechanics: Theory and Experiment

سال: 2016

ISSN: 1742-5468

DOI: 10.1088/1742-5468/2016/02/023207