Universality of fluctuation-dissipation ratios: The ferromagnetic model
نویسندگان
چکیده
منابع مشابه
Universality of fluctuation-dissipation ratios: the ferromagnetic model.
We calculate analytically the fluctuation-dissipation ratio (FDR) for Ising ferromagnets quenched to criticality, both for the long-range model and its short-range analog in the limit of large dimension. Our exact solution shows that, for both models, if the system is unmagnetized while if the initial magnetization is nonzero. This indicates that two different classes of critical coarsening dyn...
متن کاملNegative fluctuation-dissipation ratios in the backgammon model.
We analyze fluctuation-dissipation relations in the backgammon model: a system that displays glassy behavior at zero temperature due to the existence of entropy barriers. We study local and global fluctuation relations for the different observables in the model. For the case of a global perturbation we find a unique negative fluctuation-dissipation ratio that is independent of the observable an...
متن کاملGilbert ferromagnetic damping theory and the fluctuation-dissipation theorem
Related Articles Evolution of ferromagnetic and spin-wave resonances with crystalline order in thin films of full-Heusler alloy Co2MnSi J. Appl. Phys. 111, 023912 (2012) Frequency-selective control of ferromagnetic resonance linewidth in magnetic multilayers Appl. Phys. Lett. 100, 032402 (2012) Spin wave modes in ferromagnetic tubes J. Appl. Phys. 111, 013905 (2012) Hysteretic spin-wave excitat...
متن کاملFluctuation-dissipation ratios in the dynamics of self-assembly.
We consider two seemingly very different self-assembly processes: formation of viral capsids and crystallization of sticky disks. At low temperatures, assembly is ineffective, since there are many metastable disordered states, which are a source of kinetic frustration. We use fluctuation-dissipation ratios to extract information about the degree of this frustration. We show that our analysis is...
متن کاملActivated aging dynamics and negative fluctuation-dissipation ratios.
In glassy materials, aging proceeds at large times via thermal activation. We show that this can lead to negative dynamical response functions and novel and well-defined violations of the fluctuation-dissipation theorem, in particular, negative fluctuation-dissipation ratios. Our analysis is based on detailed theoretical and numerical results for the activated aging regime of simple kinetically...
متن کاملذخیره 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: Physical Review E
سال: 2005
ISSN: 1539-3755,1550-2376
DOI: 10.1103/physreve.72.056114