arXiv subjects

Piotr Chruściel

Publications and source records attributed to Piotr Chruściel.

3 recordsLinked to original sources

arXiv2025

High-Sensitivity Fiber Interferometer for Gravitational Phase Shift Measurement on Entangled States

In this contribution, we describe the status of our experiment aimed at measuring the gravitationally induced phase shift on path-entangled photons. We use a kilometer-scale fiber interferometer whose arms are vertically displaced in the Earth gravitational potential, allowing photons propagating at different heights to accumulate different phases. To date, this is the first experiment to measure this effect on massless particles, thereby experimentally combining general relativity and quantum mechanics.

quant-ph↗

arXiv2016

Bifurcating solutions of the Lichnerowicz equation

We give an exhaustive description of bifurcations and of the number of solutions of the vacuum Lichnerowicz equation with positive cosmological constant on $S^1\times S^2$ with $U(1)\times SO(3)$-invariant seed data. The resulting CMC slicings of Schwarzschild-de Sitter and Nariai are described.

gr-qc↗

arXiv2016

The Euclidean quantisation of Kerr-Newman-de Sitter black holes

We study the family of Einstein-Maxwell instantons associated with the Kerr-Newman metrics with a positive cosmological constant. This leads to a quantisation condition on the masses and charges of the resulting Euclidean solutions.

hep-th↗