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Browsing Department of Physics by Title
Now showing items 226-245 of 255
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(Springer, 2009-01)Non-Hermitian but PϕTϕ-symmetrized spherically-separable Dirac and Schrödinger Hamiltonians are considered. It is observed that the descendant Hamiltonians Hr , Hθ , and Hϕ play essential roles and offer some “user-feriendly” ...
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(Physics Letters B, Elsevier, 2012)We employ the 'square root' of the Maxwell Lagrangian (i.e. \surd(F_{{\mu}{\nu}}F^{{\mu}{\nu}})), coupled with gravity to search for the possible linear potentials which are believed to play role in confinement. It is found ...
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(Physical Review D, American Physical Society (APS), 2014)We revisit the stability analysis of cylindrical thin shell wormholes which have been studied in literature so far. Our approach is more systematic and in parallel to the method which is used in spherically symmetric thin ...
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(Eastern Mediterranean University (EMU) - Doğu Akdeniz Üniversitesi (DAÜ), 2017)In this thesis we study spherically symmetric timelike thin-shells in 3+1-dimensional bulk spacetime. We first introduce the cut and paste formalism which is used to make thin-shells in general relativity and then we ...
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(Eastern Mediterranean University (EMU), 2012-08)ABSTRACT: The concept of thin-shell wormholes has been considered in Einstein’s theory of gravity coupled with different matter sources likeMaxwell, Yang-Mills, Born-Infeld- Hoffman fields, generalized Chaplygin gas and ...
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(Physical Review D, American Physical Society (APS), 2010)Recently in (Phys. Rev. D 76, 087502 (2007) and Phys. Rev. D 77, 089903(E) (2008)) a thin-shell wormhole has been introduced in 5-dimensional Einstein-Maxwell-Gauss-Bonnet (EMGB) gravity which was supported by normal matter. ...
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(Astrophysics and Space Science, Springer, 2013)A regular class of static, cylindrically symmetric pure magnetic field metrics is rederived in a different metric ansatz in all dimensions. Radial, time dependent perturbations show that for dimensions d>3 such spacetimes ...
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(Physical Review D, American Physical Society (APS), 2013)We study the stability of thin-shell wormholes in Einstein-Maxwell-Gauss-Bonnet gravity. The equation of state of the thin shell wormhole is considered first to obey a generalized Chaplygin gas and then we generalize it ...
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(Journal of Mathematical Physics, American Institute of Physics (AIP), 1988)Some properties of the space-times admitting two spacelike Killing vectors are studied. In particular, using harmonic maps the degree of freedom on the M' manifold is exploited to add scalar and electromagnetic fields ...
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(Eastern Mediterranean University (EMU) - Doğu Akdeniz Üniversitesi (DAÜ), 2016-06)The study of traversable wormholes is very hot topic for the past 30 years. One of the best possible way to make traversable wormhole is using the thin-shells to cut and paste two spacetime which has tunnel from one ...
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(SIGMA, 2010)A new class of non-Hermitian Hamiltonians with real spectrum, which are written as a real linear combination of su(2) generators in the form H=ωJ3+αJ−+βJ+, α≠β, is analyzed. The metrics which allows the transition to the ...
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(Classical and Quantum Gravity, Institution of Physics (IOP) Publishing, 1997)Sandwich waves in the Einstein–Maxwell theory are expressed globally by introducing step functions at the boundaries. We show that a test particle crossing such a wave zone extracts energy from the sandwich wave.
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(Classical and Quantum Gravity, Institute of Physics (IOP) Publishing, 2010)We present a theorem in d-dimensional static, spherically symmetric spacetime in generic Lovelock gravity coupled with a non-linear electrodynamic source to generate solutions. The theorem states that irrespective of the ...
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(Eastern Mediterranean University (EMU) - Doğu Akdeniz Üniversitesi (DAÜ), 2012-06)
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(2016-01-07)
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(The European Physical Journal C, Springer, 2014-03-13)We revisit the regular black hole found by Hayward in 4 -dimensional static, spherically symmetric spacetime. To find a possible source for such a spacetime we resort to the nonlinear electrodynamics in general relativity. ...
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(Eastern Mediterranean University (EMU) - Doğu Akdeniz Üniversitesi (DAÜ), 2019)We study the possibility of constructing \ thin-shell wormhole (TSW) in a particular 𝑓����(𝑅����)-gravity model coupled minimally with nonlinear electromagnetic fields. In doing so, first we give a new static spherically ...
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(The European Physical Journal C, Springer, 2014)The Zipoy-Voorhees-Weyl (ZVW) spacetime characterized by mass (M) and oblateness (δ) is proposed in the construction of viable thin-shell wormholes (TSWs). Departure from spherical / cylindrical symmetry yields positive ...
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(European Physical Journal C, Springer, 2015)Real-valued triplet of scalar fields as source gives rise to a metric which tilts the scalar, not the light cone, in 2+1-dimensions. The topological metric is static, regular and it is characterized by an integer κ=±1,±2,.... ...
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(Eastern Mediterranean University (EMU) - Doğu Akdeniz Üniversitesi (DAÜ), 2014-02)ABSTRACT: This research is to assess the conceptual understanding of towards learning Physics courses for master and undergraduate students among the first year and final year. The study examined engineering undergraduates ...
Now showing items 226-245 of 255
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