arXiv subjects

Vishnulal Cheriyodathillathu

Publications and source records attributed to Vishnulal Cheriyodathillathu.

3 recordsLinked to original sources

arXiv2026

Inaccessibility of the Cosmological Singularity to Quantum Probes

We propose an operational resolution of the FLRW big bang singularity using quantum probes satisfying a curvature coupled Klein-Gordon equation. Applying the Madelung-Bohm decomposition of a Klein-Gordon field on a classical near-singularity FLRW background, we show that the induced conformal geometry renders curvature invariants finite and makes past directed causal geodesics complete. The classical big bang surface is therefore inaccessible to this class of quantum probes in finite effective proper time, while the underlying FLRW spacetime remains singular.

gr-qc↗

arXiv2026

Quantum resolution of the Schwarzschild singularity

We revisit the Schwarzschild singularity in a semiclassical setting where the background geometry is classical and quantum effects enter through Bohmian (quantal) trajectories associated with a Klein Gordon wave packet. Using the Madelung-Bohm decomposition of the Klein Gordon wavefunction, we show that the quantum-modified motion is equivalent to geodesic motion in an effective metric conformally related to Schwarzschild, with a conformal factor fixed by the wavefunction amplitude. Solving the wavefunction equation near $r\to 0$ determines this factor and yields finite curvature invariants, in suitable coordinates the interior extends smoothly and the effective spacetime is geodesically complete. This suggests that quantum dynamics on a fixed classical background can regularize the Schwarzschild singularity without a full theory of quantum gravity.

gr-qc↗

arXiv2025

Superradiance of anyons

In this paper, we investigate superradiance of anyons from a (2+1)-dimensional Bañados, Teitelboim and Zanelli (BTZ) black hole. Our analysis demonstrates that the superradiance condition for anyons mirrors that of a neutral scalar field within a BTZ black hole. Furthermore, we explore the feasibility of observing this phenomenon in analogue black holes and formulate the corresponding superradiance condition for acoustic black holes.

gr-qc↗