Results 11 to 20 of about 4,605 (100)

Is "the theory of everything'' merely the ultimate ensemble theory? [PDF]

, 1998
We discuss some physical consequences of what might be called ``the ultimate ensemble theory'', where not only worlds corresponding to say different sets of initial data or different physical constants are considered equally real, but also worlds ruled ...
Albrecht, Asgeirsson, Balashov, Barrow, Barrow, Barrow, Barrow, Büchel, Carr, Carter, Chaitin, Coleman, Courant, Curry, Davies, Davies, Davies, Deser, Deutsch, Dorling, Eddington, Ehrenfest, Ehrenfest, Everett III, Feinberg, Freeman, Goodstein, Greenstein, Hawking, Hawking, Hilbert, Hoyle, Linde, Linde, Max Tegmark, Misner, Nielsen, Nielsen, Nozick, Penrose, Poincaré, Press, Robinson, Rucker, Schrödinger, Solomonoff, Tangherlini, Tegmark, Tegmark, Tegmark, Tipler, Vilenkin, Weinberg, Weinberg, Weyl, Wheeler, Wheeler, Whitrow, Wigner, Zeh, Zurek   +60 more
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Characteristics, Bicharacteristics, and Geometric Singularities of Solutions of PDEs

, 2013
Many physical systems are described by partial differential equations (PDEs). Determinism then requires the Cauchy problem to be well-posed. Even when the Cauchy problem is well-posed for generic Cauchy data, there may exist characteristic Cauchy data ...
Vitagliano, Luca
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Quantum transfer operators and chaotic scattering [PDF]

, 2009
Transfer operators have been used widely to study the long time properties of chaotic maps or flows. We describe quantum analogues of these operators, which have been used as toy models by the quantum chaos community, but are also relevant to study ...
Nonnenmacher, Stéphane
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Involutive constrained systems and Hamilton-Jacobi formalism

, 2014
In this paper, we study singular systems with complete sets of involutive constraints. The aim is to establish, within the Hamilton-Jacobi theory, the relationship between the Frobenius' theorem, the infinitesimal canonical transformations generated by ...
Bertin, M. C., Pimentel, B. M., Valcárcel, C. E.   +2 more
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Branes as solutions of gauge theories in gravitational field [PDF]

, 2014
The idea of the Gauss map is unified with the concept of branes as hypersurfaces embedded into $D$-dimensional Minkowski space. The map introduces new generalized coordinates of branes alternative to their world vectors $\mathbf{x}$ and identified with ...
Zheltukhin, A. A.
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Is the classical Bukhvostov-Lipatov model integrable? A Painlev\'e analysis

, 1998
In this work we apply the Weiss, Tabor and Carnevale integrability criterion (Painlev\'e analysis) to the classical version of the two dimensional Bukhvostov-Lipatov model. We are led to the conclusion that the model is not integrable classically, except
Ablowitz M.J., Bukhvostov A.P., Coleman S., Fateev V.A., Gebert R.W., Ince E.L., Kac V.G., Kowalevskaya S., Lesage F., Lowenstein H., Olshanetsky M.A., Osgood W.F., Ramani A., Tabor M., Weiss J., Yoshida H., Zamolodchikov A.B.   +16 more
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On asymptotic nonlocal symmetry of nonlinear Schr\"odinger equations

, 1998
A concept of asymptotic symmetry is introduced which is based on a definition of symmetry as a reducibility property relative to a corresponding invariant ansatz.
Bluman G.W., Budd C.J., Crawford J.D., Dorodnitsyn V., Gaeta G., Golubitsky M., Hydon P.E., Hydon P.E., Hydon P.E., McLachlan R.I., Olver P.J., Ovsiannikov L.V., Stephani H., Svirshchevskii S.R.   +13 more
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Frames of reference in spaces with affine connections and metrics

, 1999
A generalized definition of a frame of reference in spaces with affine connections and metrics is proposed based on the set of the following differential-geometric objects: (a) a non-null (non-isotropic) vector field, (b) the orthogonal to the vector
Fiziev P, Gogsadze Sh P, Hartley D, Hehl F W, Iliev B Z, Iliev B Z, Iliev B Z, Iliev B Z, Iliev B Z, Iliev B Z, Ivanitskaja O S, Ivanitskaja O S, Kleinert H, Linez A M, Manoff S, Manoff S, Manoff S, Manoff S, Manoff S, Manoff S, Manoff S, Mizkjewitsch N V, Moeller C, Nesterov A I, Norden A P, Raschewski P K, Roditchev V I, Roditchev V I, S Manoff, Saa A, Saa A, Saa A, Schmutzer E, Sinjukov N S, Uhlmann A, Vladimirov J S   +35 more
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Clifford algebras, Fourier transforms and quantum mechanics [PDF]

, 2012
In this review, an overview is given of several recent generalizations of the Fourier transform, related to either the Lie algebra sl_2 or the Lie superalgebra osp(1|2).
De Bie, Hendrik
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On Integrability and Exact Solvability in Deterministic and Stochastic Laplacian Growth

, 2019
We review applications of theory of classical and quantum integrable systems to the free-boundary problems of fluid mechanics as well as to corresponding problems of statistical mechanics.
Loutsenko, Igor, Yermolayeva, Oksana
core   +1 more source