Filters
Results 1 - 10 of 7239
Results 1 - 10 of 7239.
Search took: 0.033 seconds
Sort by: date | relevance |
Ansaripour, Ghassem, E-mail: gansaripour@yazduni.ac2011
AbstractAbstract
[en] A reply to the comment on the paper by Ansaripour (2010 Phys. Scr. 82 045008). (reply to comment)
Primary Subject
Source
Available from http://dx.doi.org/10.1088/0031-8949/83/04/047002; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Physica Scripta (Online); ISSN 1402-4896;
; v. 83(4); [1 p.]

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Hoffmann-Ostenhof, M.; Hoffmann-Ostenhof, T.
Vienna Univ. (Austria). Inst. fuer Theoretische Physik1990
Vienna Univ. (Austria). Inst. fuer Theoretische Physik1990
AbstractAbstract
[en] We study L2-solutions of (-Δ+V-E)ψ = 0 in Rn, n ≥ 2 and derive a sharp upper bound to lx0(ψ) in terms of x0, E and V under rather restrictive assumptions on V. We show for V smooth that an upper bound to lx0(ψ) implies an upper bound to the dimension of the eigenspace associated to E. 16 refs. (Authors)
Primary Subject
Source
21 Feb 1990; 16 p
Record Type
Report
Report Number
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Booth, Thomas E.
Los Alamos National Laboratory (United States). Funding organisation: DOE/LANL (United States)2012
Los Alamos National Laboratory (United States). Funding organisation: DOE/LANL (United States)2012
AbstractAbstract
[en] The power iteration method is the standard Monte Carlo approach for obtaining the eigenfunctions of a nuclear system, but the power method sometimes converges very slowly. Most discussions give a mathematical reason for the slow convergence of the Monte Carlo power method using the same concepts and terminology as when the power method is applied to a deterministic problem. This note first looks at why the convergence is slow from an intuitive Monte Carlo neutron perspective. Second, this note proposes building an eigenfunction intuitively in a cumulative (and noniterative) neutron by neutron manner that tends to better direct neutrons to where the neutrons need to be. Third, a very similar method for building the second eigenfunction is speculatively proposed.
Primary Subject
Secondary Subject
Source
5 Jun 2012; 42 p; AC52-06NA25396; Available from http://permalink.lanl.gov/object/tr?what=info:lanl-repo/lareport/LA-UR-12-21928; PURL: https://www.osti.gov/servlets/purl/1043017/; doi 10.2172/1043017
Record Type
Report
Report Number
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
External URLExternal URL
Chicherin, D; Kirschner, R, E-mail: Roland.Kirschner@itp.uni-leipzig.de2013
AbstractAbstract
[en] Yangian symmetric correlators are defined as eigenfunctions of monodromy operators. Examples and relations are given and an evaluation method of the symmetry condition is described
Primary Subject
Source
ISQS21: 21. international conference on integrable systems and quantum symmetries; Prague (Czech Republic); 12-16 Jun 2013; Available from http://dx.doi.org/10.1088/1742-6596/474/1/012014; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Literature Type
Conference
Journal
Journal of Physics. Conference Series (Online); ISSN 1742-6596;
; v. 474(1); [9 p.]

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] A holographic description of scalar mesons is presented, in which two- and three-point functions are hieroglyphically reconstructed. Mass spectrum, decay constants, eigenfunctions and the coupling of the scalar states with two pseudoscalars are found. A comparison of the results with current phenomenology is discussed.
Primary Subject
Source
IFAE 2009: Incontri di Fisica delle Alte Energie 2009; Bari (Italy); 15-17 Apr 2009
Record Type
Journal Article
Literature Type
Conference
Journal
Nuovo Cimento della Societa Italiana di Fisica. C, Geophysics and Space Physics; ISSN 1124-1896;
; v. 32(3-4); p. 73-76

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Derkachov, S. E.; Valinevich, P. A., E-mail: derkach@pdmi.ras.ru, E-mail: valinevich@pdmi.ras.ru2019
AbstractAbstract
[en] The quantum SL(3,ℂ)-invariant spin magnet with infinite-dimensional principal series representation in local spaces is considered. We construct eigenfunctions of the Sklyanin B-operator which define the representation of separated variables of the model.
Primary Subject
Source
Copyright (c) 2019 Springer Science+Business Media, LLC, part of Springer Nature; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
De Bie, Hendrik; Van de Vijver, Wouter; Genest, Vincent X; Vinet, Luc, E-mail: Hendrik.DeBie@UGent.be, E-mail: vxgenest@mit.edu, E-mail: Wouter.vandeVijver@UGent.be, E-mail: vinet@crm.umontreal.ca2018
AbstractAbstract
[en] A higher rank generalization of the (rank one) Racah algebra is obtained as the symmetry algebra of the Laplace–Dunkl operator associated to the root system. This algebra is also the invariance algebra of the generic superintegrable model on the n-sphere. Bases of Dunkl harmonics are constructed explicitly using a Cauchy–Kovalevskaia theorem. These bases consist of joint eigenfunctions of labelling Abelian subalgebras of the higher rank Racah algebra. A method to obtain expressions for both the connection coefficients between these bases and the action of the symmetries on these bases is presented. (paper)
Primary Subject
Secondary Subject
Source
Available from http://dx.doi.org/10.1088/1751-8121/aa9756; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Journal of Physics. A, Mathematical and Theoretical (Online); ISSN 1751-8121;
; v. 51(2); [20 p.]

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] A study is made of the iso-energetic spectral problem for two classes of multidimensional periodic difference operators. The first class of operators is defined on a regular simplicial lattice. The second class is defined on a standard rectangular lattice and is the difference analogue of a multidimensional Schroedinger operator. The varieties arising in the direct spectral problem are described, along with the divisor of an eigenfunction, defined on the spectral variety, of the corresponding operator. Multidimensional analogues are given for the Veselov-Novikov correspondences connecting the divisors of the eigenfunction with the canonical divisor of the spectral variety. Also, a method is proposed for solving the inverse spectral problem in terms of θ-functions of curves lying 'at infinity' on the spectral variety
Primary Subject
Source
Available from http://dx.doi.org/10.1070/SM2002v193n04ABEH000645; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Sbornik. Mathematics; ISSN 1064-5616;
; v. 193(4); p. 559-584

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Gaillard, P; Matveev, V B, E-mail: Pierre.Gaillard@u-bourgogne.fr, E-mail: Vladimir.Matveev@u-bourgogne.fr2009
AbstractAbstract
[en] We consider some special reductions of generic Darboux-Crum dressing formulae and of their difference versions. As a matter of fact, we obtain some new formulae for Darboux-Poeschl-Teller (DPT) potentials by means of Wronskian determinants. For their difference deformations (called DDPT-I and DDPT-II potentials) and the related eigenfunctions, we obtain new formulae described by the ratios of Casorati determinants given by the functional difference generalization of the Darboux-Crum dressing formula.
Primary Subject
Source
2. workshop on nonlinearity and geometry; Bedlewo (Poland); 13-19 Apr 2008; S1751-8113(09)07389-2; Available from http://dx.doi.org/10.1088/1751-8113/42/40/404009; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Literature Type
Conference
Journal
Journal of Physics. A, Mathematical and Theoretical (Online); ISSN 1751-8121;
; v. 42(40); [16 p.]

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] In this paper we study the equiconvergence of expansions in trigonometric Fourier series and in eigenfunctions and associated functions of an integral operator whose kernel has discontinuities of the first kind on broken lines formed from the sides and diagonals of the squares obtained by dividing the unit square into n2 equal squares.
Primary Subject
Source
Available from http://dx.doi.org/10.1070/SM2006v197n11ABEH003817; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Sbornik. Mathematics; ISSN 1064-5616;
; v. 197(11); p. 1669-1696

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
1 | 2 | 3 | Next |