Browsing Department of Physics by Title

EMU I-REP

Browsing Department of Physics by Title

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  • Bound states for spiked harmonic oscillators and truncated Coulomb potentials 
    Mustafa, Omar; Maen, Odeh (IOP Publishing, 1999)
    We propose a new analytical method to solve for the nonexactly solvable Schrodinger equation. Successfully, it is applied to a class of spiked harmonic oscillators and truncated Coulomb potentials. The utility of this ...
  • Canonical Acoustic Thin-Shell Wormholes 
    Jusufi, Kimet; Övgün, Ali (World Scientific Publishing Co Pte Ltd, 2017-02-16)
    In this paper, we model a canonical acoustic thin-shell wormhole (CATSW) in the framework of analogue gravity systems. In this model, we apply cut and paste technique to join together two spherically symmetric, analogue ...
  • Chaos in electrovac and non-Abelian plane wave spacetimes 
    Sakallı, İzzet; Halilsoy, Mustafa (Physical Review D, American Physical Society (APS), 2006)
    Superposed electrovac pp-waves causes chaos. To show this, we project the particle geodesics onto the (x,y) plane and simulate the phase space’s Poincaré section numerically. Similar considerations apply, with minor ...
  • Chaos in Kundt type III Spacetimes 
    Sakallı, İzzet; Halilsoy, Mustafa (Chinese Physics Letters, Institute of Physics (IOP) Publishing, 2011)
    We consider geodesics motion in a particular Kundt type III spacetime in which Einstein-Yang-Mills equations admit solutions. On a particular surface as constraint we project the geodesics into the (x,y) plane and treat ...
  • Charge screening by thin-shells in a 2+1-dimensional regular black hole 
    Mazharimousavi, S. Habib; Halilsoy, Mustafa (European Physical Journal C, Springer, 2013)
    We consider a particular Bardeen black hole in 2+1-dimensions. The black hole is sourced by a radial electric field in non-linear electrodynamics (NED). The solution is obtained anew by the alternative Hamiltonian formalism. ...
  • Classical and quantum quasi-free position-dependent mass: Pöschl-Teller and ordering ambiguity 
    Mazharimousavi, Habib S.; Mustafa, Omar (IOP Publishing, 2013)
    We argue that the classical and quantum mechanical correspondence may play a basic role in the fixation of the ordering ambiguity parameters. We use quasi-free position-dependent masses in the classical and quantum frameworks. ...
  • A Class of Transcendent Solution to Ernst System 
    Halilsoy, Mustafa (Lettere Al Nuovo Cimento, Societa Italiana di Fisica, 1985)
    We present a method that generates a class of transcendent solutions to Ernst system in Einstein-Maxwell theory of general relativity.
  • Colliding EM Shock Waves in General Relativity 
    Halilsoy, Mustafa (Physical Review D, Amrican Physical Society (APS), 1988)
    we derive a new, exact solution for the Einstein-Maxwell equations that describes the collision (interaction) of two arbitrarily polarized electromagnetic shock waves. In the limit that the polarization angle vanishes, ...
  • Colliding EM Waves that Admit Separable Wave Equation 
    Halilsoy, Mustafa (General Relativity and Gravitation, Springer, 1994)
    We show that the massive wave equation is separable in two particular colliding Einstein-Maxwell waves space-times. The first is the type D metric of Chandrasekhar and Xanthopoulos whereas the second is the doubly ...
  • Colliding Impulsive Gravitational Waves 
    Yavuz, Nutku; Mustafa, Halilsoy (Physical Review Letters, American Physical Society (APS), 1977)
    We formulate the problem of colliding plane gravitational waves with two polarizations as the harmonic mappings of Riemannian manifolds and construct an exact solution of the vacuum Einstein field equations describing ...
  • Colliding Impulsive Waves in Succession 
    Mustafa, Halilsoy (Physical Review -Series d-, American Physical Society (APS), 1990)
    We formulate the initial-value problem for two colliding trains of impulsive gravitational waves. In the absence of a global, exact solution we show that in a region lying between the singularity u'+ U'= 1 and the wave ...
  • Colliding Plane Gravitational Waves 
    Halil, Mustafa (Halilsoy, Mustafa) (Physical Review D, American Physical Society (APS), 1979)
    New exact solutions of the vacuum Einstein field equations are constructed which describe the collision of plane gravitational waves. These solutions generalize those of Szekeres by relaxing the requirement of collinear ...
  • Colliding Superposed Waves in EM Theory 
    Halilsoy, Mustafa (Physical Review D, American Physical Society (APS), 1989)
    We reformulate the initial data on the characteristic surface for colliding waves in the Einstein- Maxwell theory. This approach takes into account the superposition principle for gravitational and electromagnetic waves. ...
  • Colliding wave solutions from five-dimensional black holes and black pp-branes 
    Halilsoy, Elif; Halilsoy, Mustafa; Ünver, Özlem (Journal of Mathematical Physics, American Institute of Physics (AIP), 2006)
    e consider both the five-dimensional Myers-Perry and Reissner-Nordstrom black holes (BHs) and black pp -branes in (4+p)(4+p) -dimensions. By employing the isometry with the colliding plane waves (CPWs) we generate ...
  • Colliding Wave Solutions in a Symmetric Non-metric Theory 
    Gürtuğ, Özay; Halilsoy, Mustafa (International Journal of Theoretical Physics, Springer, 2009)
    A method is given to generate the non-linear interaction (collision) of linearly polarized gravity coupled torsion waves in a non-metric theory. Explicit examples are given in which strong mutual focussing of gravitational ...
  • Collision of Electromagnetic Shock Waves Coupled with Axion Waves: An Example 
    Halilsoy, Mustafa; Sakallı, İzzet (Classical and Quantum Gravity, Institute of Physics (IOP) Publishing, 2003)
    We present an exact solution that describes collision of electromagnetic shock waves coupled with axion plane waves. The axion has a rather special coupling to the cross polarization term of the metric. The initial data ...
  • Comment On Colliding Plane Gravitational Waves 
    Mustafa, Halilsoy (Physics Letters, 1981)
    It is shown that a theorem proved on colliding plane gravitational waves is not correct.
  • Comment on 'Nonlinear dynamics of a position-dependent mass-driven Duffing-type oscillator' 
    Mustafa, Omar (IOP Publishing, 2013-09)
    Using a generalized coordinate along with a proper invertible coordinate transformation, we show that the Euler–Lagrange equation used by Bagchi et al (2013 J. Phys. A: Math. Theor. 46 032001) is in clear violation of ...
  • Comment on 'Position-dependent effective mass Dirac equations with PT-symmetric and non-PT-symmetric potentials 
    Mustafa, Omar; Mazharimousavi, Habib S. (IOP Publishing, 2007)
    Jia and Dutra (2006 J. Phys. A: Math. Gen. 39 11877) have considered the one-dimensional non-Hermitian complexified potentials with real spectra in the context of position-dependent mass in the Dirac equation. In their ...
  • Comment on "Static and spherically symmetric black holes in f(R) theories" 
    Mazharimousavi, S. Habib; Halilsoy, Mustafa (Physical Review D, American Physical Society (APS), 2012)
    We consider the interesting ‘‘near-horizon test’’ reported in S. E. P. Bergliaffa and Y. E. C. de O. Nunes,Phys. Rev. D 84, 084006 (2011) for any static, spherically symmetric black hole solution admitted in f(R)gravity. ...