Browsing Department of Physics by Subject "physics"

EMU I-REP

Browsing Department of Physics by Subject "physics"

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  • Application of Pseudo-Hermitian Quantum Mechanics to a PT-Symmetric Hamiltonian with a Continuum of Scattering States 
    Mostafazadeh, Ali; Mustafa, Omar (American Institute of Physics, 2005)
    We extend the application of the techniques developed within the framework of the pseudo-Hermitian quantum mechanics to study a unitary quantum system described by an imaginary PT-symmetric potential v(x) having a continuous ...
  • Complexified von Roos Hamiltonian's η-weak-pseudo-Hermiticity, isospectrality and exact solvability 
    Mustafa, Omar; Mazharimousavi, Habib S. (IOP Publishing, 2008)
    A complexified von Roos Hamiltonian is considered and a Hermitian first-order intertwining differential operator is used to obtain the related position-dependent mass η-weak-pseudo-Hermitian Hamiltonians. Using a ...
  • Gravitinos tunneling from traversable Lorentzian wormholes 
    Sakalli, İzzet; Övgün, Ali (Astrophysics and Space Science, Springer, 2015-08-19)
    Recent research shows that Hawking radiation (HR) is also possible around the trapping horizon of a wormhole. In this article, we show that the HR of gravitino (spin-3/2 ) particles from the traversable Lorentzian wormholes ...
  • Hypocycloidal throat for 2+1-dimensional thin-shell wormholes 
    Mazharimousavi, S. Habib; Halilsoy, Mustafa (The European Physical Journal C, Springer, 2015-11-19)
    Recently we have shown that for 2+1−dimensional thin-shell wormholes a non-circular throat may lead to a physical wormhole in the sense that the energy conditions are satisfied. By the same token, herein we consider angular ...
  • Particle Collision near 1+1-DH-LBHs 
    Övgün, Ali; Halilsoy, Mustafa (2016-01-04)
    This poster is presented in KSM2015, Frankfurt, Germany
  • Quantum singularities in a model of f(R) Gravity 
    Tahamtan, Tayabeh; Gürtuğ, Özay (European Physical Journal C: Particles and Fields, Springer, 2012)
    The formation of a naked singularity in a model of f(R) gravity having as source a linear electromagnetic field is considered in view of quantum mechanics. Quantum test fields obeying the Klein-Gordon, Dirac and Maxwell ...
  • Real spectra for non-Hermitian Dirac equation in 1+1 dimensions with a most general coupling 
    Mustafa, Omar (Elsevier, 2009)
    The most general combination of couplings of fermions with external potentials in 1+1 dimensions, must include vector, scalar and pseudoscalar potentials. We consider such a mixing of potentials in a PT-symmetric ...
  • Tunnelling of vector particles from Lorentzian wormholes in 3+1 dimensions 
    Sakallı, İzzet; Övgün, Ali (THE EUROPEAN PHYSICAL JOURNAL PLUS, Springer, 2015-06-11)
    In this article, we consider the Hawking radiation (HR) of vector (massive spin-1) particles from the traversable Lorentzian wormholes (TLWH) in 3+1 dimensions. We start by providing the Proca equations for the TLWH. ...
  • Uninformed Hawking radiation 
    Sakallı, İzzet; Övgün, Ali (EPL, IOP Publishing (Institute of Physics), 2015-04-24)
    We show in detail that the Parikh-Wilczek tunneling method (PWTM), which was designed for resolving the information loss problem in Hawking radiation (HR) fails whenever the radiation occurs from an isothermal process. ...
  • η-weak-pseudo-Hermiticity generators and exact solvability 
    Mustafa, Omar; Mazharimousavi, Habib S. (Springer, 2006)
    Exact solvability of some non-Hermitian η-weak-pseudo-Hermitian Hamiltonians is explored as a byproduct of η-weak-pseudo-Hermiticity generators. A class of V (x) = V (x) + i W (x) potentials is considered, where the imaginary ...