Results 71 to 80 of about 125,191 (194)

Linear response strength functions with iterative Arnoldi diagonalization

, 2009
We report on an implementation of a new method to calculate RPA strength functions with iterative non-hermitian Arnoldi diagonalization method, which does not explicitly calculate and store the RPA matrix.
B. G. Carlsson, J. Dobaczewski, J. P. Blaizot, J. Toivanen, K. Mizuyama, M. S. Gordon, P. Ring, P. Toivanen, P. Veselý, R. R. Rodríguez-Guzmán, Y. Saad, Y. Saad   +11 more
core   +1 more source

Sloshing phenomenon analysis by using concentrated mass model (1st Report, Proposition of linear analytical model for small amplitude wave and free vibration analysis)

Nihon Kikai Gakkai ronbunshu, 2016
Sloshing phenomena in containers during earthquakes often cause serious accidents. For oil tanks with a floating roof, sloshing and structural vibration should be treated as a coupled problem.
Tatsuhiro YOSHITAKE, Satoshi ISHIKAWA, Takahiro KONDOU, Kenichiro MATSUZAKI   +3 more
doaj   +1 more source

FQHE interferometers in strong tunneling regime. The role of compactness of edge fields

, 2012
We consider multiple-point tunneling in the interferometers formed between edges of electron liquids with in general different filling factors in the regime of the Fractional Quantum Hall effect (FQHE).
A. M. Polyakov, Alexander G. Abanov, D. V. Averin, Dmitri V. Averin, Sriram Ganeshan   +4 more
core   +1 more source

Optimal state estimation for cavity optomechanical systems

, 2015
We demonstrate optimal state estimation for a cavity optomechanical system through Kalman filtering. By taking into account nontrivial experimental noise sources, such as colored laser noise and spurious mechanical modes, we implement a realistic state ...
Aspelmeyer, Markus, Hammerer, Klemens, Hoelscher-Obermaier, Jason, Hofer, Sebastian G., Riedinger, Ralf, Wieczorek, Witlef   +5 more
core   +1 more source

Symmetry breaking and the random-phase approximation in small quantum dots

, 2003
The random-phase approximation has been used to compute the properties of parabolic two-dimensional quantum dots beyond the mean-field approximation. Special emphasis is put on the ground state correlation energy, the symmetry restoration and the role of
Antonio Puente, C. W. Johnson, C. Yannouleas, C. Yannouleas, C. Yannouleas, C. Yannouleas, D. C. Langreth, D. J. Rowe, D. J. Thouless, D. J. Thouless, D. J. Thouless, E. Lipparini, E. R. Marshalek, F. Furche, F. Pederiva, G. Berthier, G. F. Bertsch, H.-M. Müller, J. A. Pople, Ll. Serra, Llorenç Serra, M. Brack, M. Wagner, N. S. Simonović, P. A. Maksym, P.-G. Reinhard, R. G. Nazmitdinov, Rashid G. Nazmitdinov, S. M. Reimann, S. Tarucha, W. Y. Ruan   +30 more
core   +1 more source

Stability analysis of different combinations of time-integration schemes in fluid-structure interaction simulations [PDF]

, 2012
Partitioned fluid-structure interaction simulations often use different time-integration schemes to discretize the different sub-problems. As such, the flow and structural equations can be solved with schemes that are particularly suited for each ...
Degroote, Joris, Segers, Patrick, Taelman, Liesbeth, Vierendeels, Jan   +3 more
core   +1 more source

Sensitivity of Principal Oscillation Patterns (POPs) to data distribution in space

Meteorologische Zeitschrift, 2008
The skill of the Principal Oscillation Pattern (POP) technique is tested with respect to a situation where harmonic waves of prescribed frequency and wavelength move over a domain where data are recorded at inhomogeneously distributed stations.
Joseph Egger
doaj   +1 more source

A well-posed optimal spectral element approximation for the Stokes problem [PDF]

A method is proposed for the spectral element simulation of incompressible flow. This method constitutes in a well-posed optimal approximation of the steady Stokes problem with no spurious modes in the pressure.
Maday, Y., Patera, A. T., Ronquist, E. M.   +2 more
core   +1 more source

A New Criterion for the Stabilization Diagram Used with Stochastic Subspace Identification Methods: An Application to an Aircraft Skeleton

Shock and Vibration, 2014
The modal parameters of a structure that is estimated from ambient vibration measurements are always subject to bias and variance errors. Accordingly the concept of the stabilization diagram is introduced to help users identify the correct model.
E. Mrabet, M. Abdelghani, N. Ben Kahla
doaj   +1 more source

Natural selection of inflationary vacuum required by infra-red regularity and gauge-invariance

, 2011
It has been an issue of debate whether the inflationary infrared(IR) divergences are physical or not. Our claim is that, at least, in single-field models, the answer is "No," and that the spurious IR divergence is originating from the careless treatment ...
Tanaka, Takahiro, Urakawa, Yuko
core   +1 more source