Work

Angle of null energy condition lines in critical spacetimes

Year: 2025

Type: article

Abstract: We identify a new critical parameter in Choptuik’s gravitational collapse: the angle at which null energy condition (NEC) saturation lines intersect at the center of the critical spacetime. These NEC lines coincide with regions of vanishing curvature, dividing spacetime into stripes of positive and negative curvature. By numerically solving Choptuik’s original system, we find the NEC angle to be α ≈ 0.64 ( ≈ 3 7 ° ) and analytically derive α = 2 arccot ( D − 1 ) for any spacetime dimension D > 3 .

Source: Physical review. D/Physical review. D.

DOI: 10.1103/vpyn-b2fn

Authors: Christian Ecker, Florian Ecker, Daniel Grumiller

Institutions: Goethe University Frankfurt, TU Wien

Language: English

Topic: Black Holes and Theoretical Physics

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: Deutsche Forschungsgemeinschaft, Austrian Science Fund

Awards: TRR 211: Stark wechselwirkende Materie unter extremen Bedingungen, Generalized SYK/JT correspondences, Carrollian gravity and black holes