arXiv subjects

Nazir A. Ganaie

Publications and source records attributed to Nazir A. Ganaie.

3 recordsLinked to original sources

arXiv2026

Order-Sensitive Quantum Distinguishability in Hawking Greybody Scattering

We study how composition order becomes operationally distinguishable when a phase-sensitive Gaussian control is applied before or after black-hole greybody scattering. The scattering process is formulated on calibrated asymptotic mode ports as a bosonic attenuation channel, and the control is a calibrated squeezing transformation. For finite-dimensional faithful families near a common faithful output, the local symmetrized Umegaki response is governed by the Bogoliubov-Kubo-Mori norm of the channel-composition defect; the corresponding bosonic problem is solved exactly at the Gaussian-state level. The exact attenuation-squeezing response yields an infrared exponent-transfer law relating greybody transmission and occupation scalings to distinguishability. For a massless scalar on Schwarzschild, matched low-frequency scattering gives an explicit fixed-partial-wave logarithmic coefficient and a locally integrable packet response. At finite squeezing, the infrared outputs approach distinct pure Gaussian supports, producing finite sandwiched Rényi divergence below unit order, logarithmic Umegaki growth at unit order, and divergence above unit order. Schwarzschild-de Sitter boundary prescriptions generate controlled source-isolated and product-horizon crossover sectors. The results apply to calibrated asymptotic-port compositions and to the reduced finite-band selected-mode realization under the stated narrowband and channel assumptions.

gr-qc↗

arXiv2026

Finite-cutoff holography and quasilocal thermodynamics of BTZ black holes in a cavity

We show that the BTZ black hole in a finite radial cavity realizes a closed finite-cutoff thermodynamic system whose renormalized Brown-York stress tensor is simultaneously the quasilocal stress tensor of the cavity and the stress tensor of the cutoff dual theory. The central result is the exact finite-radius Hamilton-Jacobi equation for the wall stress tensor and its realization by the static and rotating BTZ families in local wall variables. In the homogeneous wall frame this equation becomes a nonlinear equation of state, with the corresponding gravitational deformation parameter fixed entirely by the bulk couplings. We use this structure to formulate the rotating cavity directly in terms of wall-measured grand-canonical data, derive the corresponding quasilocal first law and radial flow equations, and identify the finite-size Hawking-Page transition. The same wall dictionary gives an exact finite-cutoff spectral map and a deformed Cardy density of states in quasilocal energy variables. The cavity radius therefore plays a controlled double role: it is the physical size of the Brown-York thermodynamic system and the cutoff scale of the dual finite-radius theory.

gr-qc↗

arXiv2025

AdS Length corrected Thermodynamics of a Black Hole in a Cloud of Strings and Perfect Fluid Dark Matter

We investigate the thermodynamic characteristics of the Reisner-Nordstrom black hole in AdS spacetime with a cloud of strinsg and perfect fluid dark matter background, employing a minor correction to the AdS radius. Although the entropy remains unaltered, enthalpy, free energies, pressure, internal energy, and specific heat exhibit considerable modifications. These quantities get enhanced generally by the positive correction ($ε> 0$) to the AdS scale and lead to faster growth/ slower decay with increase in horizon radius. The opposite effect is reflected by negative corrections ($ε< 0$), which sometimes result in negative or divergent behaviour. We find an interconnection between the combined effect of exotic matter fields and geometric corrections on black hole thermodynamics and thermodynamic stability.

gr-qc↗