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Electronic structure of solid nitromethane:Effects of high pressure and molecular vacancies
Electronic structure solid nitromethane high pressure and molecular vacancies
2015/10/16
The combined effect of pressure and molecular vacancies on the atomic structure and electronic properties of solid nitromethane, a prototypical energetic material, is studied at zero temperature.The s...
High-precision measurement of the thermal exponent for the three-dimensional XY universality class
Accuracy of measurement measurement superfluids lipase
2014/12/20
Simulation results are reported for the critical point of the two-component ϕ4 field theory. The correlation-length exponent is measured to high precision with the result ν=0.6717(3). This value ...
A spatio-temporal Gaussian-Conical wavelet with high aperture selectivity for motion and speed analysis
Extraction of motion parameters speed tuning continuous wavelet transform directional and conical wavelets
2012/5/25
The construction of a spatio-temporal wavelet and its tuning to speed was first realized in the 90s on the Morlet wavelet by M. Duval-Destin \cite{Duval-Destin91a,Duval-Destin92}. This enabled to demo...
Particle filtering in high-dimensional chaotic systems
particle filtering in high dimensions chaotic systems Lorenz’96 nonlinear filtering dimensional reduction homogenization
2012/4/20
We present an efficient particle filtering algorithm for multiscale systems, that is adapted for simple atmospheric dynamics models which are inherently chaotic. Particle filters represent the posteri...
On High Moments and the Spectral Norm of Large Dilute Wigner Random Matrices
random matrices Wigner ensemble dilute random matrices
2011/9/22
Abstract: We consider a dilute version of the Wigner ensemble of n-dimensional random matrices H such that each row has in average \rho_n non-zero elements. We study asymptotic properties of the spect...
Ultra High Energy Particles
High Energy Particles temporal order Heisenberg's Uncertainty Principle Quantum Mechanical equations
2011/8/11
Abstract: We revisit considerations of temporal order in relativistic effects, taking into account Heisenberg's Uncertainty Principle. We then use a formulation of relativistic Quantum Mechanical equa...
State-space solutions to the dynamic magnetoencephalography inverse problem using high performance computing
Magnetoencephalography source localization Kalman filter fixed interval smoother
2011/8/17
Abstract: Determining the magnitude and location of neural sources within the brain that are responsible for generating magnetoencephalography (MEG) signals measured on the surface of the head is a ch...
Evaluation of High Order Terms for the Hubbard Model in the Strong-coupling Limit
High Order Terms the Hubbard Model Strong-coupling
2011/9/15
The ground-state energy of the Hubbard model on a Bethe lattice with infinite connectivity at half filling is calculated for the insulating phase. Using Kohn抯 transformation to derive an effective Ham...
Evaluation of High Order Terms for the Hubbard Model in the Strong-coupling Limit
for the Hubbard Model High Order Terms the Strong-coupling Limit Strongly Correlated Electrons
2011/7/28
Evaluation of High Order Terms for the Hubbard Model in the Strong-coupling Limit.
The Quillen metric, analytic torsion and tunneling for high powers of a holomorphic line bundle
Holomorphic line bundle determinant bundle analytic torsion supersymmetry quantum mechanics
2011/7/28
Let L be a line bundle over a compact complex manifold X (possibly non-Kahler) and denote by h_{L} and h_{X} fixed Hermitian metrics on L and TX, respectively. We generalize the asymptotics for the in...
The subject of this paper is the scattering of a very intense laser pulse (intensity $I\sim10^{21}\;{\mathrm{W/cm^2}}$) on relativistic electrons with Lorentz factor between 10 and 45. The laser pulse...
Strong gate coupling of high-Q nanomechanical resonators
nanomechanics NEMS quantum limit detection dissipation
2010/11/24
The detection of mechanical vibrations near the quantum limit is a formidable challenge since the displacement becomes vanishingly small when the number of phonon quanta tends towards zero.
An intere...
Magnetization and Magnetoresistance of CeRu2Al10 under High Magnetic Fields along c-Axis
CeRu2Al10 Kondo semiconductor pulsed high magnetic field
2010/11/24
We have studied the magnetization and magnetoresistance of CeRu2Al10 in the applied magnetic field H along the c-axis up to ∼ 55 T. The magnetization M at low temperatures shows an H-linear incr...
Very High Precision Determination of Low-Energy Parameters: The 2-d Heisenberg Quantum Antiferromagnet as a Test Case
Very High Precision Determination of Low-Energy Paraameters 2-d Heisenberg Quantum Antiferromagnet Test Case
2011/1/14
The 2-d spin 1 2 Heisenberg antiferromagnet with exchange coupling J is investigated on a periodic square lattice of spacing a at very small temperatures using the loop-cluster algorithm. Monte Carlo ...
On the high-density expansion for Euclidean Random Matrices
high-density expansion Euclidean Random Matrices
2010/11/22
Diagrammatic techniques to compute perturbatively the spectral properties of Euclidean random
matrices (ERM) in the high-density regime are introduced and discussed in detail. Such techniques are dev...