3 papers
gr-qc2026
Hessian in the spinfoam models with cosmological constant
Wojciech KamiÅski, Qiaoyin Pan
In this paper, we introduce a general method to prove the non-degeneracy of the Hessian in the spinfoam vertex amplitude for quantum gravity and apply it to the spinfoam models wit…
math.DG2025
Spiraling conformal geodesics
Wojciech KamiÅski
In this short note, we construct an example of spiraling conformal geodesic in Euclidean signature in dimension , answering the question posed by Helmuth Friedrich and Paul Tod,…
gr-qc2024
Extreme horizon equation
Wojciech KamiÅski, Jerzy Lewandowski
Extremal horizons satisfy an equation induced by the Einstein vacuum equations that determines the shape of the horizon and the manner in which it rotates (the EEH equation). Until…