Author

K. Jusufi

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Preprint Oct 2026

Planck-scale black hole remnants inside neutron stars

We examine a Planck-scale regular black-hole remnant in neutron-star matter using a T-duality-inspired effective geometry and explicitly separate geometrical results from assumptions about absorption and emission. Within the static family, the surface-gravity temperature grows as $(M-M_{\rm ext})^{1/2}$ after a small m...

K. Jusufi, Francisco S. N. Lobo · 0 citations

Preprint Sep 2026

Quantum-gravity-inspired Alcubierre warp-drive geometries

String T-duality, through its correspondence with path-integral duality, endows the low-energy propagator with a zero-point length $l_0=2\pi\sqrt{\alpha'}$ that softens the short-distance behavior of gravitational fields. Motivated by the regular black-hole construction obtained from the corresponding smeared source, w...

K. Jusufi, Francisco S. N. Lobo · 1 citation

Preprint Sep 2026

Schwinger stability of T-duality-inspired extremal black holes

We study the near-horizon charged-scalar instability associated with Schwinger pair production in the charged regular black hole geometry of the zero-point-length T-duality prescription. Using the same effective geometry and regularized gauge potential, we construct the extremal branch, its ${\rm AdS}_2 \times S^2$ nea...

Chiang-Mei Chen, K. Jusufi, D. Singleton · 2 citations