Εμφανίζονται 1 - 20 Αποτελέσματα από 633 για την αναζήτηση '"Spacetime Quantization"', χρόνος αναζήτησης: 1,00δλ Περιορισμός αποτελεσμάτων
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    Academic Journal

    Θεματικοί όροι: Physical Sciences, Mathematical Physics, Applied Physics

    Περιγραφή αρχείου: application/pdf

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    Mixed Materials

    Additional Titles: We study gravitational perturbations of the Schwarzschild metric in the context of noncommutative gravity. $r-φ$ and $r-t$ noncommutativity are introduced through a Moyal twist of the Hopf algebra of diffeomorphisms. Differential geometric structures such as curvature tensors are also twisted. Noncommutative equations of motion are derived from the recently proposed NC vacuum Einstein equation. Here, in addition to previously calculated axial NC potential, we present the polar solution which generalizes the work done by Zerilli. Quasinormal mode frequencies of the two potentials are calculated using three methods: WKB, Pöschl-Teller and Rosen-Morse. Notably, we apply the WKB method up to the 13th order and determine the optimal order for each noncommutative parameter value individually. Additionally, we provide comprehensive error estimations for the higher-order WKB calculations, offering insights into the accuracy of our results. By comparing the spectra, we conclude that the classical isospectrality of axial and polar modes is broken upon spacetime quantization. Isospectrality is restored in the eikonal limit.

    Σύνδεσμος: http://arxiv.org/abs/2409.01402

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    Report

    Συγγραφείς: Carneiro, S., Nemes, M. C.

    Πηγή: Chaos Solitons Fractals 24:1183-1187,2005

    Θεματικοί όροι: High Energy Physics - Theory

    Σύνδεσμος πρόσβασης: http://arxiv.org/abs/hep-th/0410188

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    Academic Journal

    Συγγραφείς: Yazeed Alharbi

    Θεματικοί όροι: Physical Sciences, Particle and Field Physics

    Περιγραφή αρχείου: application/pdf

    Σύνδεσμος πρόσβασης: https://www.preprints.org/manuscript/202108.0252/v1/download

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