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Purdue researchers observe phase transition thought impossible
Purdue researchers phase transition thought impossible
2015/11/12
An ultrapure material taken to pressures greater than that in the depths of the ocean and chilled to temperatures colder than outer space has revealed an unexpected phase transition that crosses two d...
Percolation in Interdependent and Interconnected Networks: Abrupt Change from Second to First Order Transition
Cascading failures, Percolation, Coupled networks, Phase transition
2011/9/5
Robustness of two coupled networks system has been studied only for dependency coupling (S. Buldyrev et. al., Nature, 2010) and only for connectivity coupling (E. A. Leicht and R. M. D’Souza, arxiv:09...
Evidence of coexistence of change of caged dynamics at Tg and the dynamic transition at Td in solvated proteins
hydrated protein, solvated proteins, aqueous mixtures, carbohydrates, caged dynamics, glass transition
2011/9/14
Mössbauer spectroscopy and neutron scattering measurements on proteins embedded in solvents including water and aqueous mixtures have emphasized the observation of the distinctive temperature dep...
Phase transition in the Sznajd model with independence
Social systems Spin chain models Scaling phenomena in complex systems
2011/8/29
We propose a model of opinion dynamics which describes two major types of social influence - conformity and independence. Conformity in our model is described by the so called outflow dynamics (known ...
Thermally induced 0-pi phase transition in Josephson junctions through a ferromagnetic oxide film
Thermally induced 0-pi phase transition Josephson junctions through ferromagnetic oxide film
2010/11/9
We investigate the Josephson transport through a ferromagnetic oxide film, e.g., La$_2$BaCuO$_5$, theoretically. Using the recursive Green's function technique, we found the formation of a pi-junction...
Differential Light Shift Cancellation in a Magnetic-Field-Insensitive Transition of $^{87}$Rb
Differential Light Shift Cancellation Magnetic-Field-Insensitive Transition
2010/10/29
We demonstrate near-complete cancellation of the differential light shift of a two-photon magnetic-field-insensitive microwave hyperfine (clock) transition in $^{87}$Rb atoms trapped in an optical la...
Measurement of the gamma gamma* --> eta_c transition form factor
gamma gamma momentum transfer
2010/3/15
We study the reaction e+e- --> e+e- eta_c, eta_c --> K_S K+- pi-+ and obtain eta_c mass and width values 2982.2+-0.4+-1.6 MeV/c^2 and 31.7+-1.2+-0.8 MeV, respectively. We find Gamma(eta_c --> gamma ga...
Phenomenological Model for the metal-insulator transition in two dimensions
metal-insulator transition logistics equation
2010/7/8
The resistivity measured in two-dimensional MOSFET geometry is modeled by considering that the resistivity is a function of the temperature and the areal density of charges (electrons or holes). The l...
Critical behavior of the delay-induced chaos transition in a nonlinear model for the immune
Delayed systems Immune response Chaos
2010/7/5
In this paper we analyze a model for the dynamics of the immune system interacting with a target population.The model consists in a set of two-dimensional delayed differential equations. The model is ...
Dynamical Phase Transition in Vibrational Surface Modes
Dynamical phase transition Vibrational localized states Origin of frictional forces
2010/9/29
We consider the dynamical properties of a simple model of vibrational surface modes. We obtain the exact spectrum of surface excitations and discuss their dynamical features. In addition to the usuall...
Radiative Transition Probabilities and Lifetimes for the Band Systems A2\Pi - X2\Sigma+ of the Isovalent Molecules BeF, MgF and CaF
the Band Systems A2\Pi - X2\Sigma+ the Isovalent Molecules BeF, MgF and CaF Radiative Transition Probabilities and Lifetimes
2010/10/15
Accurate potential energy curves, transition moments, spectroscopic constants, radiative transition probabilities, and lifetimes for the states X2S+ and A2P of BeF, MgF and CaF are reported using high...
Onset of Classical Behaviour After a Phase Transition
Classical Behaviour a Phase Transition
2010/10/13
We analyze the onset of classical behaviour in a scalar field after a continuous phase transition, in which the system-field, the long wavelength order parameter of the model, interacts with an enviro...
Kinetic Phase Transition in the Mixed-Spin Ising Model
Kinetic Phase Transition the Mixed-Spin Ising Model
2010/10/19
In this work we studied a ferromagnetic mixed-spin Ising model including a single ion crystal-field term. The model system consists of two interpenetrating sublattices with spins σ = 1/2 and S = 1. Th...
Static- and Dynamical-Phase Transition in One-Dimensional Reaction-Diffusion Systems with Boundaries
Static- and Dynamical-Phase Transition One-Dimensional Reaction-Diffusion Systems Boundaries
2010/10/28
A general system of particles (of one or several species) on a one dimensional lattice with boundaries is considered. Two general behaviors of such systems are investigated. The stationary behavior of...
Experimental Determination of b and g Critical Exponents in the Sol-gel Phase Transition by Using Steady-state Fluorescence Technique
methyl methacrylate ethylene glycol dimethacrylate sol-gel phase transitions
2010/4/16
The gelation of methyl methacrylate and ethylene glycol dimethacrylate was studied using the steady-state fluorescence technique. Samples with various crosslinker densities were prepared and sol-gel p...