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Strong gravitational lensing --- A probe for extra dimensions and Kalb-Ramond field

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arxiv 1611.06936 v2 pith:YEUH3IUQ submitted 2016-11-18 gr-qc hep-th

Sumanta Chakraborty , Soumitra SenGupta This is my paper · ORCID
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abstract

Strong field gravitational lensing in the context of both higher spacetime dimensions and in presence of Kalb-Ramond field have been studied. After developing proper analytical tools to analyze the problem we consider gravitational lensing in three distinct black hole spacetimes --- (a) four dimensional black hole in presence of Kalb-Ramond field, (b) brane world black holes with Kalb-Ramond field and finally (c) black hole solution in $f(T)$ gravity. In all the three situations we have depicted the behavior of three observables: the asymptotic position approached by the relativistic images, the angular separation and magnitude difference between the outermost images with others packed inner ones, both numerically and analytically. Difference between these scenarios have also been discussed along with possible observational signatures.

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Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Testing General Relativity on Galactic Scales via DESI-BAO and Strong Lensing: Circumventing Assumptions on the Hubble Constant, Sound Horizon, and Dark Energy

    astro-ph.CO 2026-03 conditional novelty 5.5 of 10

    Model-independent BAO+strong-lensing analysis yields γ_PPN ≈ 1.10–1.15 (P1) and 1.32–1.49 (P2), consistent with GR at 1–2.5σ depending on the lens mass model.

  2. Black hole with global monopole charge in self-interacting Kalb-Ramond field

    gr-qc 2025-01 reject novelty 5.0 of 10

    A black hole solution combining a Kalb-Ramond field and a global monopole is presented, but the claimed solar system constraints on its parameters are inconsistent with the derived formulas.

  3. Photon Sphere and Shadow of a Perturbative Black Hole in $f(R,\mathcal{G})$ Gravity

    gr-qc 2026-05 unverdicted novelty 4.0 of 10

    Perturbative higher-curvature corrections in f(R,G) gravity shift the photon-sphere radius and black-hole shadow size away from Schwarzschild values, with the Gauss-Bonnet sector contributing more than mixed terms.

  4. Branch structure and nonextensive thermodynamics of Kalb-Ramond-ModMax black holes: observational signatures

    gr-qc 2026-01 reject novelty 4.0 of 10

    A multi-channel phenomenological study of Einstein-Kalb-Ramond-ModMax black holes whose Tsallis internal energy does not reduce to the black-hole mass in the standard-entropy limit.

  5. Periodical orbits and waveforms with spontaneous Lorentz symmetry-breaking in Kalb-Ramond gravity

    gr-qc 2024-12 conditional novelty 4.0 of 10

    For a Kalb-Ramond black hole, the Lorentz-violating parameter l shifts the radii and energies of the marginal and innermost stable orbits and changes the phase of gravitational waves from extreme-mass-ratio inspirals.

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