Results 81 to 90 of about 378,632 (352)

Replica Fourier Transform: Properties and applications

Nuclear Physics B, 2015
The Replica Fourier Transform is the generalization of the discrete Fourier Transform to quantities defined on an ultrametric tree. It finds use in conjunction of the replica method used to study thermodynamics properties of disordered systems such as ...
A. Crisanti, C. De Dominicis
doaj   +1 more source

Constrained Annealing for Spin Glasses [PDF]

Journal de Physique I, 1995
The quenched free energy of spin glasses is estimated by means of annealed averages where the frustration is constrained to its average value. We discuss the case of d-dimensional Ising models with random nearest neighbour coupling, and we introduce a new method to obtain constrained annealed averages without recurring to Lagrange multipliers.
Paladin G, Pasquini M, SERVA, Maurizio
openaire   +5 more sources

Quantum Fluctuations of a Nearly Critical Heisenberg Spin Glass

, 2000
We describe the interplay of quantum and thermal fluctuations in the infinite-range Heisenberg spin glass. This model is generalized to SU(N) symmetry, and we describe the phase diagram as a function of the spin S and the temperature T.
Georges, A., Parcollet, O., Sachdev, S.
core   +3 more sources

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

Advanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian, Frédéric Demoly, Mohammad Lakhi, Bernard Rolfe, Mahdi Bodaghi   +4 more
wiley   +1 more source

Two-dimensional XY spin/gauge glasses on periodic and quasiperiodic lattices

, 1996
Via Monte Carlo studies of the frustrated XY or classical planar model we demonstrate the possibility of a finite (nonzero) temperature spin/gauge glass phase in two dimensions.
, B Mitrovic, Binder K, Binder K, Chowdhury D, Edwards S F, Jain S, Kosterlitz J M, Kosterlitz J M, Lançon F, Metropolis N C, Miyashita S, Niizeki K, Prober D E, R W Reid, Reid R W, S K Bose, Schwartz M, Soma T, Strandburg K J, Toulouse G, Watanabe Y   +21 more
core   +2 more sources

Surface Modification of Fluorine‐Free Superhydrophobic Materials with (Ultra‐)Thin TiO2 Layers

Advanced Engineering Materials, EarlyView.
Significant changes in wettability, with a reduction of 60o in the water conduct angle, are reported via the surface modification of fluorine‐free superhydrophobic thin films, prepared by aerosol‐assisted chemical vapor deposition, after coating a 4 nm layer of titanium dioxide on the surface using atomic layer deposition.
Julie Jalila Kalmoni, Chris Blackman, Claire J Carmalt   +2 more
wiley   +1 more source

Generalized Spin-Glass Relaxation [PDF]

Physical Review Letters, 2009
Spin relaxation close to the glass temperature of CuMn and AuFe spin glasses is shown, by neutron spin echo, to follow a generalised exponential function which explicitly introduces hierarchically constrained dynamics and macroscopic interactions. The interaction parameter is directly related to the normalised Tsallis non-extensive entropy parameter, q,
R. Cywinski, R.M. Pickup, Catherine Pappas, Peter Fouquet, Bela Farago   +4 more
openaire   +4 more sources

Field-Driven Hysteresis of the d=3 Ising Spin Glass: Hard-Spin Mean-Field Theory

, 2007
Hysteresis loops are obtained in the Ising spin-glass phase in d=3, using frustration-conserving hard-spin mean-field theory. The system is driven by a time-dependent random magnetic field H_Q that is conjugate to the spin-glass order Q, yielding a field-
A. N. Berker, A. Nihat Berker, Burcu Yücesoy   +2 more
core   +1 more source

Programmable Reconfiguration of Hybrid 4D Chiral Metamaterials via Mechanical and Thermal Stimuli

Advanced Engineering Materials, EarlyView.
A class of hybrid chiral mechanical metamaterials is designed to achieve programmable reconfiguration through soft networks, hinges, and bilayer joints integrated with rigid units. Responsive to mechanical and thermal stimuli, these structures exhibit large volume changes, tunable deformation pathways, and both positive and negative thermal expansion ...
Yunyao Jiang, Siyao Liu, Yaning Li
wiley   +1 more source

Existence of a Thermodynamic Spin-Glass Phase in the Zero-Concentration Limit of Anisotropic Dipolar Systems

Physical Review X, 2014
The nature of ordering in dilute dipolar interacting systems dates back to the work of Debye and is one of the most basic, oldest and as-of-yet unsettled problems in magnetism.
Juan Carlos Andresen, Helmut G. Katzgraber, Vadim Oganesyan, Moshe Schechter   +3 more
doaj   +1 more source