Results 91 to 100 of about 1,170 (186)

Reparametrization ghost contribution to superstring multiloop amplitudes

Physical Review D, 1992
We use the sewing procedure in the operator formalism to construct the {ital N}-point {ital g}-loop vertex {ital V}{sub {ital N};{ital g}} for the ({ital b},{ital c}) system in superstring theory. After computing explicitly the lowest picture-changed states, we saturate {ital V}{sub {ital N};{ital g}} with them showing that the reparametrization ghost ...
PETTORINO, ROBERTO, F. PEZZELLA
openaire   +3 more sources

Nonlinear Kalman Filtering with Reparametrization Gradients

2024 9th International Conference on Frontiers of Signal Processing (ICFSP)
We introduce a novel nonlinear Kalman filter that utilizes reparametrization gradients. The widely used parametric approximation is based on a jointly Gaussian assumption of the state-space model, which is in turn equivalent to minimizing an approximation to the Kullback-Leibler divergence. It is possible to obtain better approximations using the alpha
San Gultekin, Brendan Kitts, Aaron Flores 0001, John W. Paisley   +3 more
openaire   +2 more sources

Concept of indirect optimization of the Cobb-Douglas function via reciprocal-variable transformation: Case of unknown constraint

Examples and Counterexamples
We investigate an indirect optimization problem of a Cobb-Douglas function under an unknown budget constraint. The proposed approach relies on a reciprocal transformation applied to the first-order multivariate marginal conditions, enabling the ...
Boaz Wadawa
doaj   +1 more source

Optimal affine reparametrization of rational curves

Journal of Symbolic Computation, 2011
Let \({\mathbb K}\) be a characteristic zero field, and let \({\mathcal C}\) be a rational curve in \({\mathbb F}^N\) (\(N\) arbitrary), where \({\mathbb F}\) is the algebraic closure of \({\mathbb K}\). Assume that \({\mathcal C}\) is parametrized by means of a birational parametrization \(\phi(t)\) with coefficients over an algebraic extension ...
openaire   +2 more sources

Boundary reparametrizations and six-point functions on the AdS2 string

Journal of High Energy Physics
We compute the tree-level connected six-point function of identical scalar fluctuations of the AdS2 string worldsheet dual to the half-BPS Wilson line in planar N $$ \mathcal{N} $$ = 4 Super Yang-Mills.
Simone Giombi, Shota Komatsu, Bendeguz Offertaler, Jieru Shan   +3 more
doaj   +1 more source

The modified Kamlet and Jacobs approach for rapidly predicting the equation of state and Chapman–Jouguet point of high explosives

FirePhysChem
We propose here the modified Kamlet and Jacobs equation, RoseModKJ (Reparametrization of the slope for expansion adiabats), to predict the pressure at different relative volumes across the expansion adiabat.
Sabrina Wahler, Daniel Luo, Sergey Zybin, Dezhou Guo, William A. Goddard, III   +4 more
doaj   +1 more source

Symmetries in the Hamiltonian Formulation of String Theory

Advances in High Energy Physics
In the context of the Hamiltonian formulation of string theory, a widely acknowledged issue is the inability of the first-class constraints to accurately reproduce the Lagrangian symmetry transformations.
Héctor A. Benítez, René Negrón
doaj   +1 more source

Signature methods for brain-computer interfaces. [PDF]

Sci Rep, 2023
Xu X, Lee D, Drougard N, Roy RN.
europepmc   +1 more source

State estimation of a physical system with unknown governing equations. [PDF]

Nature, 2023
Course K, Nair PB.
europepmc   +1 more source

Elastic Shape Analysis of Surfaces with Second-Order Sobolev Metrics: A Comprehensive Numerical Framework. [PDF]

Int J Comput Vis, 2023
Hartman E, Sukurdeep Y, Klassen E, Charon N, Bauer M.   +4 more
europepmc   +1 more source