Results 31 to 40 of about 354 (59)
A family of complex potentials with real spectrum [PDF]
, 1998 We consider a two-parameter non hermitean quantum-mechanical hamiltonian that is invariant under the combined effects of parity and time reversal transformation.
Alvarez G +14 more
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Comparison between the (G’/G) - expansion method and the modified extended tanh method
Open Physics, 2016 In this paper, firstly, we give a connection between well known and commonly used methods called the (G'G)$\left( {{{G'} \over G}} \right)$ -expansion method and the modified extended tanh method which are often used for finding exact solutions of ...
Akçaği Şamil, Aydemir Tuğba
doaj +1 more source
Holistic projection of initial conditions onto a finite difference approximation
, 2001 Modern dynamical systems theory has previously had little to say about finite difference and finite element approximations of partial differential equations (Archilla, 1998).
A.J Roberts +4 more
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Open Physics, 2018 New additional conditions required for the uniqueness of the 2D elastostatic problems formulated in terms of potential functions for the derived Papkovich-Neuber representations, are studied.
Guerrero José Luis Morales +3 more
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On the bivariate spectral quasi-linearization method for solving the two-dimensional Bratu problem
Open Physics, 2018 In this paper, a bivariate spectral quasi-linearization method is used to solve the highly non-linear two dimensional Bratu problem. The two dimensional Bratu problem is also solved using the Chebyshev spectral collocation method which uses Kronecker ...
Muzara Hillary +2 more
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Dynamical Casimir Effect for a Swinging Cavity
, 2008 The resonant scalar particle generation for a swinging cavity resonator in the Casimir vacuum is examined. It is shown that the number of particles grows exponentially when the cavity rotates at some specific external frequency.Comment: to appear in J ...
Braggio C +9 more
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Improving the Convergence of an Iterative Algorithm Proposed By Waxman [PDF]
, 2006 In the iterative algorithm recently proposed by Waxman for solving eigenvalue problems, we point out that the convergence rate may be improved. For many non-singular symmetric potentials which vanish asymptotically, a simple analytical relationship ...
Andrew R A +3 more
core +2 more sources
On blowup for Yang-Mills fields
, 2001 We study development of singularities for the spherically symmetric Yang-Mills equations in $d+1$ dimensional Minkowski spacetime for $d=4$ (the critical dimension) and $d=5$ (the lowest supercritical dimension).
Bizoń, P., Tabor, Z.
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Exponentially fitted fifth-order two-step peer explicit methods [PDF]
, 2015 The so called peer methods for the numerical solution of Initial Value Problems (IVP) in ordinary differential systems were introduced by R. Weiner et al [6, 7, 11, 12, 13] for solving different types of problems either in sequential or parallel ...
Calvo, M +3 more
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Phantom universe from CPT symmetric QFT
, 2005 Inspired by the generalization of quantum theory for the case of non-Hermitian Hamiltonians with CPT symmetry, we construct a simple classical cosmological scalar field based model describing a smooth transition from ordinary dark energy to the phantom ...
Alam U. +11 more
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