Results 31 to 40 of about 446 (44)

An extension of the Newman-Janis algorithm

, 2014
The Newman-Janis algorithm is supplemented with a null rotation and applied to the tensors of the Reissner-Nordstr\"om spacetime to generate the metric, Maxwell, Ricci and Weyl tensors for the Kerr-Newman spacetime.
Keane, Aidan J.
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More on the Similarity between D=5 Simple Supergravity and M Theory [PDF]

, 1998
It has been known that D=5 simple supergravity resembles D=11 supergravity in many respects. We present their further resemblances in (1) the duality groups upon dimensional reduction, and (2) the worldsheet structure of the solitonic string of the D=5 ...
Alvarez-Gaumé, Argurio, Breitenlohner, Cadavid, Callan, Chamseddine, Cremmer, Cremmer, Dabholkar, Duff, Eichenherr, Gibbons, Güven, Hughes, Hull, Kaplan, Nobuyoshi Ohta, Ohta, Shun'ya Mizoguchi, Vafa, Witten   +20 more
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Obtaining non-Abelian field theories via Faddeev-Jackiw symplectic formalism

, 2009
In this work we have shown that it is possible to construct non-Abelian field theories employing, in a systematic way, the Faddeev-Jackiw symplectic formalism. This approach follows two steps.
A.C.R. Mendes, Abreu, Barcelos-Neto, Barcelos-Neto, C. Neves, C. Wotzasek, Correa Silva, Dirac, E.M.C. Abreu, Faddeev, Godinho, Klein, Popov, R.C.N. Silva, W. Oliveira, Yang   +15 more
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Symmetry Analysis of Barotropic Potential Vorticity Equation

, 2008
Recently F. Huang [Commun. Theor. Phys. V.42 (2004) 903] and X. Tang and P.K. Shukla [Commun. Theor. Phys. V.49 (2008) 229] investigated symmetry properties of the barotropic potential vorticity equation without forcing and dissipation on the beta-plane.
Alexander Bihlo, Andreev V K, Berker R, Bihlo A, Charney J G, Huang F, Ibragimov N H, Kapitanskii L V, Mubarakzyanov G M, Névir R Blender, Olver P J, Ovsiannikov L V, Pedlosky J, Roman O Popovych, Rossby C G, Shukla X Tang   +15 more
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A note on fermionic flows of the N=(1|1) supersymmetric Toda lattice hierarchy

, 2004
We extend the Sato equations of the N=(1|1) supersymmetric Toda lattice hierarchy by two new infinite series of fermionic flows and demonstrate that the algebra of the flows of the extended hierarchy is the Borel subalgebra of the N=(2|2) loop ...
Ikeda K, Lechtenfeld O, Takasaki K, Ueno K   +3 more
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Excitations and S-matrix for su(3) spin chain combining ${3}$ and ${3^{*}}

, 1998
The associated Hamiltonian for a su(3) spin chain combining ${3}$ and ${3^{*}}$ representations is calculated. The ansatz equations for this chain are obtained and solved in the thermodynamic limit, and the ground state and excitations are described ...
Abad J, Abad J, Abad J, Abad J, Aladim S R, Aladim S R, Baxter R J, Bethe H, de Vega H J, de Vega H J, de Vega H J, Faddeev L, Faddeev L, Gómez C, J Abad, Korepin V E, Korepin V E, Kulish P P, M Ríos, Martins M J, Mezincescu L, Sklyanin E K   +21 more
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Conserved Quantities in $f(R)$ Gravity via Noether Symmetry

, 2012
This paper is devoted to investigate $f(R)$ gravity using Noether symmetry approach. For this purpose, we consider Friedmann Robertson-Walker (FRW) universe and spherically symmetric spacetimes.
Abazajian K, Abdalla E, Adil Jhangeer, Akhlaq Ahmad Bhatti, Bennett C L, Capozziello S, Felice A D, Guenther U, Hereman W, Hereman W, M. Farasat Shamir, Noether E, Perlmutter S, Riess A G, Sebastiani L, Seprgel D N, Shamir M F, Sharif M, Sharif M, Steudel H, Wolf T   +20 more
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Coherent state quantization of a particle in de Sitter space

, 2004
We present a coherent state quantization of the dynamics of a relativistic test particle on a one-sheet hyperboloid embedded in a three-dimensional Minkowski space. The group SO_0(1,2) is considered to be the symmetry group of the system.
Ali S T, Bargmann V, Benett C L, Berezin F A, Brzezi?nski T, De Bièvre S, De Bièvre S, Engli? M, Faddeev L D, Gazeau J-P Garidi T Huguet E Lachièze-Rey M Renaud J P Winternitz J Harnad C S Lam J Patera, Gazeau J-P Lachièze-Rey M Piechocki W, González J A, Gotay M J, Henneaux M, Jorjadze G, Klauder J R, Kowalski K, Lachièze-Rey M, Liu H, Maartens R, Magnus W, Nelson E, Ohnuki Y, Perelomov A M, Piechocki W, Piechocki W, Piechocki W, Reed M, Sally P J, Seahra S S, Stephani H, Woodhouse N M J   +31 more
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Reduction of systems of first-order differential equations via Lambda-symmetries

, 2008
The notion of lambda-symmetries, originally introduced by C. Muriel and J.L. Romero, is extended to the case of systems of first-order ODE's (and of dynamical systems in particular).
Abraham-Shrauner, Bluman, Cariñena, Catalano Ferraioli, Cheb-Terrab, Cicogna, Cicogna, Cicogna, Cicogna, Coddington, Gaeta, Gaeta, Gandarias, Giampaolo Cicogna, Hadeler, Morando, Morando, Muriel, Muriel, Muriel, Muriel, Muriel, Muriel, Olver, Pucci   +24 more
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Group Theory and Quasiprobability Integrals of Wigner Functions

, 2003
The integral of the Wigner function of a quantum mechanical system over a region or its boundary in the classical phase plane, is called a quasiprobability integral. Unlike a true probability integral, its value may lie outside the interval [0,1].
Abramowitz M, Anthony J Bracken, Bacry H, Bracken A J, Bracken A J, Demosthenes Ellinas, Floreanini R, Gilmore R, Groenewold H, James G Wood, Koelink H T, Lahti P, Leonhardt U, Moyal J E, Nikiforov A F, Schleich W P, Van der Jeugt J, Van der Jeugt J, Vilenkin N J, Wigner E P   +19 more
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