Results 11 to 20 of about 94,977 (261)

Sum rule for response function in nonequilibrium Langevin systems [PDF]

Physical Review E, 2010
We derive general properties of the linear response functions of nonequilibrium steady states in Langevin systems. These correspond to extension of the results which were recently found in Hamiltonian systems [A. Shimizu and T. Yuge, J. Phys. Soc. Jpn. {\
C. W. Gardiner, K. Sekimoto, R. Kubo, Tatsuro Yuge   +3 more
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Functional characterization of generalized Langevin equations [PDF]

Journal of Physics A: Mathematical and General, 2004
We present an exact functional formalism to deal with linear Langevin equations with arbitrary memory kernels and driven by any noise structure characterized through its characteristic functional.
Abel N H, Adrián A Budini, Alexander S, Budini A A, Chandrasekar S, Cáceres M O, Cáceres M O, Cáceres M O, Cáceres M O, Cáceres M O, Denisov S I, Drory A, Fulinski A, Gnedenko B V, Gopikrishnan P, Heinrichs J, Horsthemke W, Jespersen S, Kubo R, Lévy P, Manuel O Cáceres, Masoliver J, Masoliver J, Mori H, Picozzi S, Porra J M, Spanier J, Toda M, van Kampen N G, Wang K G, West B J, Zwanzig R   +31 more
core   +3 more sources

A Function Space HMC Algorithm With Second Order Langevin Diffusion Limit [PDF]

Bernoulli, 2014
We describe a new MCMC method optimized for the sampling of probability measures on Hilbert space which have a density with respect to a Gaussian; such measures arise in the Bayesian approach to inverse problems, and in conditioned diffusions.
Ottobre, Michela, Pillai, Natesh S., Pinski, Frank J., Stuart, Andrew M.   +3 more
core   +7 more sources

Relationship between Inverse Langevin Function and r₀-r₁-Lambert W Function

AppliedMath
The relationship between the inverse Langevin function and the proposed r0-r1-Lambert W function is defined. The derived relationship leads to new approximations for the inverse Langevin function with lower relative error bounds than comparable published
Roy M. Howard
doaj   +2 more sources

Design of Experiment for Measurement of Langevin Function [PDF]

Measurement Science Review, 2012
The presented study focuses on a confrontation of the theory of regression models and theory of experiment with the real situation of determining properties of magnetic (nano)materials. Their magnetic properties can be deduced by measuring their magnetization, being the fundamental magnetic quantity of an arbitrary (nano)material.
Tuček P., Tučková M., Fišerová E., Tuček J., Kubáček L.   +4 more
doaj   +2 more sources

Time-correlation functions for odd Langevin systems

The Journal of Chemical Physics, 2022
We investigate the statistical properties of fluctuations in active systems that are governed by nonsymmetric responses. Both an underdamped Langevin system with an odd resistance tensor and an overdamped Langevin system with an odd elastic tensor are studied.
Kento Yasuda, Kenta Ishimoto, Akira Kobayashi, Li-Shing Lin, Isamu Sou, Yuto Hosaka, Shigeyuki Komura   +6 more
openaire   +5 more sources

Ergodicity and Lyapunov Functions for Langevin Dynamics with Singular Potentials [PDF]

Communications on Pure and Applied Mathematics, 2019
AbstractWe study Langevin dynamics of N particles on ℝd interacting through a singular repulsive potential, e.g., the well‐known Lennard‐Jones type, and show that the system converges to the unique invariant Gibbs measure exponentially fast in a weighted total variation distance.
Herzog, DP, Mattingly, JC
openaire   +2 more sources

WORLDLINE INFLUENCE FUNCTIONAL: ABRAHAM-LORENTZ-DIRAC-LANGEVIN EQUATION FROM QED [PDF]

Quantum Aspects of Beam Physics, 2002
We present a stochastic theory of charges moving in an electromagnetic field using nonequilibrium quantum field theory. We give a first principles' derivation of the Abraham-Lorentz-Dirac-Langevin equation which depicts the quantum expectation value for a particle's trajectory and its stochastic fluctuations by combining the worldline path integral ...
Johnson, Philip R., Hu, B. L.
openaire   +2 more sources

Iron-Oxide Nanoparticles with High Saturation Magnetization and Estimating Their Mean Magnetic Size Using Magnetization Curve [PDF]

Iranian Journal of Chemistry & Chemical Engineering
Superparamagnetic nanoparticles with high saturation magnetism and small average size were synthesized by the economic co-precipitation method. FeCl2.4H2O and FeCl3.6H2O were used as salt agents and NaOH as precipitant. Different reaction conditions were
Hossein Asnaashari Eivari
doaj   +1 more source

Revisiting random deposition with surface relaxation: approaches from growth rules to Edwards-Wilkinson equation [PDF]

, 2014
We present several approaches for deriving the coarse-grained continuous Langevin equation (or Edwards-Wilkinson equation) from a random deposition with surface relaxation (RDSR) model.
Buceta, R. C., Hansmann, D., von Haeften, B.   +2 more
core   +3 more sources