Results 51 to 60 of about 41,978 (137)

The Laplacian spectra of the RG-join weighted graphs and related asymptotic network indices

AIMS Mathematics
In this article, the Laplacian spectra of the RG-join weighted graphs and the related network indices named network coherence, kirchhoff index, and Laplacian-energy-like invariant are studied via algebraic graph theory and analysis approach.
Da Huang, Xing Chen, Cheng Yan, Zhiyong Yu   +3 more
doaj   +1 more source

The Newtonian Limit of Hermitian Gravity

, 2012
We construct the gauge invariant potentials of Hermitian Gravity and derive the linearized equations of motion they obey. A comparison reveals a striking similarity to the Bardeen potentials of general relativity. We then consider the response to a point
Christiaan L. M. Mantz, DS Robertson, Jeroen G. Burgers, M Born, Tomislav Prokopec, VF Mukhanov   +5 more
core   +1 more source

D-Brane Bound States Redux [PDF]

, 1997
We study the existence of D-brane bound states at threshold in Type II string theories. In a number of situations, we can reduce the question of existence to quadrature, and the study of a particular limit of the propagator for the system of D-branes ...
Sethi, Savdeep, Stern, Mark
core   +2 more sources

Efficient Dynamics: Reduced‐Order Modeling of the Time‐Dependent Schrödinger Equation

Advanced Physics Research, EarlyView.
Reduced‐order modeling (ROM) approaches for the time‐dependent Schrödinger equation are investigated, highlighting their ability to simulate quantum dynamics efficiently. Proper Orthogonal Decomposition, Dynamic Mode Decomposition, and Reduced Basis Methods are compared across canonical systems and extended to higher dimensions.
Kolade M. Owolabi
wiley   +1 more source

Establishing Indium in Frustrated Lewis Pair Chemistry: From Synthesis to Catalytic Applications

ChemistryEurope, EarlyView.
Not that hard: The effects of chemical hardness of the soft FLP tBu2InCH2PtBu2 and its pyridine‐adduct tBu2In(py)CH2PtBu2 were examined in adduct formation reactions toward H2, CO2, and CS2. The frustrated Lewis pair shows catalytic activity in the reduction of CO2 with pinacolborane.
Daniel N. Heuer, Jan‐Hendrik Lamm, Hans‐Georg Stammler, Beate Neumann, Andreas Mix, Yury V. Vishnevskiy, Norbert W. Mitzel   +6 more
wiley   +1 more source

Problems in Lattice Gauge Fixing

, 2001
We review many topics and results about numeric gauge fixing in lattice QCD.Comment: 47 pages, 16 eps figures.
Adler S. L., Adler S. L., B. TAGLIENTI, Bali G. S., Bali G. S., Batrouni G. G., Batrouni G. G., Blum T., Bock W., Bonnet F. D. R., C. PARRINELLO, Christou C., Creutz M., Cucchieri A., Davies C. T. H., DeGrand T., Del Debbio L., Del Debbio L., Di Giacomo A., Faber M., Fachin S., Fachin S., Ginsparg P. H., Girotti H. O., Giusti L., Gupta R., Hamber H. W., Hart A., Hart A., Henty D. S., Ilgenfritz E. M., L. GIUSTI, Leroy J. P., M. L. PACIELLO, Mandula J. E., Nambu Y., Parisi G., Parisi G., S. PETRARCA, Suzuki T., Vink J., Wilson K.   +41 more
core   +1 more source

Errors in reconstruction of dichroic X‐ray orientation tomography due to polarization rotation of the incident beam

Journal of Synchrotron Radiation, EarlyView.
Linear dichroic X‐ray tomography is a technique in which the linear dichroism of anisotropic materials is used to image crystal orientation in three dimensions. We show that the reconstruction of tomograms is subject to errors due to the change in polarization on propagation through the material and propose strategies for mitigating these effects ...
Matthew A. Marcus, Harlan Heilman, Kas Andrle, Jayden Plumb   +3 more
wiley   +1 more source

The Lie-Poisson structure of the reduced n-body problem

, 2012
The classical n-body problem in d-dimensional space is invariant under the Galilean symmetry group. We reduce by this symmetry group using the method of polynomial invariants.
Albouy A, Cannas da Silva A, Holger R Dullin, Lagrange J L, Leimkuhler B, Lerman E, Rose D Dullin H R, Sudarshan E C G   +7 more
core   +2 more sources

Computing Skinning Weights via Convex Duality

Computer Graphics Forum, EarlyView.
We present an alternate optimization method to compute bounded biharmonic skinning weights. Our method relies on a dual formulation, which can be optimized with a nonnegative linear least squares setup. Abstract We study the problem of optimising for skinning weights through the lens of convex duality.
J. Solomon, O. Stein
wiley   +1 more source

Quantitative Susceptibility Mapping in Skull Base Chordoma: In Silico Analysis and In Vivo Application Towards Indirect Hypoxia Assessment

Magnetic Resonance in Medicine, Volume 95, Issue 4, Page 2092-2105, April 2026.
ABSTRACT Purpose To evaluate quantitative susceptibility mapping (QSM) beyond the brain through realistic simulations and to explore preliminary evidence that may be indicative of hypoxia in skull base chordomas (SBC). Methods Each step of the QSM pipeline was optimized within an in silico framework consisting of (i) phase unwrapping, (ii) background ...
P. Fenech, L. Morelli, G. Parrella, S. Imparato, A. Iannalfi, S. Lillo, E. Orlandi, G. Baroni, C. Paganelli   +8 more
wiley   +1 more source