Results 41 to 50 of about 1,487,617 (328)

P-matrix and J-matrix approaches. Coulomb asymptotics in the harmonic oscillator representation of scattering theory

, 1999
The relation between the R- and P-matrix approaches and the harmonic oscillator representation of the quantum scattering theory (J-matrix method) is discussed. We construct a discrete analogue of the P-matrix that is shown to be equivalent to the usual P-
A.I. Mazur, A.M. Shirokov, Abramowitz, Bang, Bang, Baz, Bloch, Broad, Buck, de Haro, Erdélyi, Erdélyi, Feshbach, Filippov, Filippov, Filippov, Goldberger, Heller, J.M. Bang, Jaffe, Knyr, Knyr, Konovalov, Korn, Lane, Lanskoy, Lurie, Mahaux, Marangoni, Mikhelashvili, Mirolyubov, Moshinsky, Okhrimenko, Okhrimenko, Rawitscher, Raynal, Rotter, Révai, S.A. Zaytsev, Shigehara, Shirokov, Shirokov, Shirokov, Shlomo, Simonov, Smirnov, Smirnov, Taylor, Vincent, Wigner, Yamani, Yamani, Yu.F. Smirnov   +52 more
core   +1 more source

Violator Spaces: Structure and Algorithms [PDF]

, 2006
Sharir and Welzl introduced an abstract framework for optimization problems, called LP-type problems or also generalized linear programming problems, which proved useful in algorithm design.
B. Chazelle, B. Gärtner, B. Gärtner, B. Gärtner, B. Gärtner, H. Björklund, H. Björklund, I. Schurr, I. Schurr, J. Matoušek, J. Matoušek, K.L. Clarkson, M. Develin, M. Sharir, N. Amenta, N. Amenta, N. Amenta, R.W. Cottle, R.W. Cottle, W.D. Morris Jr.   +19 more
core   +6 more sources

P-Matrix analysis of the dibaryon1 D 2 resonance

Zeitschrift für Physik C Particles and Fields, 1984
We study the relation between intermediate energy nucleon-nucleon scattering and the eigenstates of the bag model using theP-matrix formalism. Data of existing phase-shift analyses are employed to calculate theP-matrix for the coupled1D2(pp) and5S2(NΔ) channels in the energy region above the Δ-isobar production threshold. TheP-matrix calculated for the
M.Zh. Shmatikov, I. M. Narodeskii, I.L. Grach   +2 more
openaire   +2 more sources

Exact solutions to the modified Korteweg-de Vries equation

, 2010
A formula for certain exact solutions to the modified Korteweg-de Vries (mKdV) equation is obtained via the inverse scattering transform method. The kernel of the relevant Marchenko integral equation is written with the help of matrix exponentials as ...
Demontis, Francesco
core   +1 more source

On a criterion of D-stability for P-matrices

Special Matrices, 2016
In this paper, we study positive stability and D-stability of P-matrices.We introduce the property of Dθ-stability, i.e., the stability with respect to a given order θ.
Kushel Olga Y.
doaj   +1 more source

Matrix regularization of classical Nambu brackets and super p-branes

Journal of High Energy Physics, 2021
We present an explicit matrix algebra regularization of the algebra of volume-preserving diffeomorphisms of the n-torus. That is, we approximate the corresponding classical Nambu brackets using sl N n 2 ℂ $$ \mathfrak{sl}\left({N}^{\left\lceil \frac{n}{2}
Meer Ashwinkumar, Lennart Schmidt, Meng-Chwan Tan   +2 more
doaj   +1 more source

Geometry of WZW Orientifolds [PDF]

, 2001
We analyze unoriented Wess-Zumino-Witten models from a geometrical point of view. We show that the geometric interpretation of simple current crosscap states is as centre orientifold planes localized on conjugacy classes of the group manifold.
A.N. Schellekens, Alekseev, Altschuler, Bachas, Bernard, Berndt, Bianchi, Bianchi, Brunner, Brunner, Cardy, Cardy, Dabholkar, Dai, Di Vecchia, Felder, Felder, Felder, Forste, Fuchs, Fuchs, Fuchs, Fuchs, Fuchs, Gepner, Goddard, Helgason, Horava, Huiszoon, Intriligator, Ishibashi, Jeffrey, K. Schalm, L.R. Huiszoon, Maldacena, Polchinski, Polchinski, Pradisi, Pradisi, Pradisi, Sagnotti, Sagnotti, Sagnotti, Schellekens, Sen, Sen, Stanciu, Witten   +47 more
core   +3 more sources

Manipulation of Convection Using Infrared Light Emitted from Human Hands

Advanced Science
Control of convection plays an important role in heat transfer regulation, bio/chemical sensing, phase separation, etc. Current convection controlling systems generally depend on engineered energy sources to drive and manipulate the convection, which ...
Hanrui Zhu, Zhen Luo, Lifu Zhang, Qingchen Shen, Runheng Yang, Weizheng Cheng, Yingyue Zhang, Modi Jiang, Chunzhi Guo, Benwei Fu, Chengyi Song, Peng Tao, Shun An, Wen Shang, Tao Deng   +14 more
doaj   +1 more source

Aniline dimers serving as stable and efficient transfer units for intermolecular charge-carrier transmission

iScience, 2023
Summary: Because any perturbation in the number of oxidation sites associated with the polymeric backbone can cause changes in the electrical properties, the stability of electrical properties has strongly prevented the wide adoption of most conducting ...
Juexin Huang, Chuanliang Feng
doaj  

Combining transient dynamics and logistic‐asymptotic growth to study the recovery of two seabird populations after rat eradication

Population Ecology, EarlyView.
This study examines the demographic dynamics of two seabird populations on Tromelin Island, 15 years after the eradication of brown rats. The results indicate that these populations are in good health and are expected to continue growing until breeding sites are saturated in about a century.
Merlène Saunier, Christophe Barbraud, Maxime Amy, Sabine Orlowski, Jean Hivert, Gabrielle Dicque, Matthieu Le Corre   +6 more
wiley   +1 more source