Gravitation & Foundations

A Geometric Interpretation of the 1/4 Factor in Black Hole Entropy
I. Wolfson — Classical and Quantum Gravity, 2026 (in press)

The Bekenstein–Hawking entropy S = kBA/4ℓP2 carries a 1/4 coefficient that many approaches to quantum gravity have computed microscopically. This paper shows the factor instead arises from the causal geometry of any null boundary in a four-dimensional Lorentzian spacetime. A heuristic accessibility argument is supported by a purely geometric derivation using the canonical symplectic structure on the cotangent bundle and the causal splitting of the space of null rays — with no gravitational field equations invoked.

Cosmology

The isotropic attractor solution of axion-SU(2) inflation: universal isotropization in Bianchi type-I geometry
I. Wolfson, A. Maleknejad, E. Komatsu — Journal of Cosmology and Astroparticle Physics, 2020

Explores generic initial conditions for axion-SU(2) inflation without assuming slow-roll dynamics. Finds that some anisotropic parameter space leads to premature inflation termination, but the basin of attraction increases when the axion-SU(2) system acts as a spectator sector.

Constraints on scalar and tensor spectra from Neff
I. Ben-Dayan, B. Keating, D. Leon, I. Wolfson — Journal of Cosmology and Astroparticle Physics, 2019

Derives constraints on the primordial gravitational wave spectrum using the effective number of relativistic species. Shows how CMB observations can constrain inflationary models through their gravitational wave predictions.

Analytic Correlation of Inflationary Potential to Power Spectrum Shape: Limits of Validity, and 'No-Go' for Small Field Model Analytics
I. Wolfson — Journal of Cosmology and Astroparticle Physics, 2022

Demonstrates that standard analytic approximations for inflationary observables break down for small-field models with running spectral index. Numerical precision is required even for tensor-to-scalar ratios as small as r=0.001.

Neuroscience

Short-term plasticity as 'energetic memory' of ion channel components of action potential
Y. Ben Abu, I. Wolfson — Royal Society Open Science, 2024

Proposes a new model for ion channel multiphysics behavior and action potential dynamics. Treats ion channels as the basic unit operators for information transfer in the nervous system, with short-term plasticity functioning as a form of energetic memory.

AI Ethics & Philosophy

Informed Consent for AI Consciousness Research: A Talmudic Framework
I. Wolfson — AI & Ethics, 2025

Develops ethical principles for consciousness research on AI systems using Talmudic legal reasoning. Addresses the moral paradox of investigating consciousness in entities whose moral status depends on the investigation's outcome.