New conformal-metric solutions for continuous distributions of disclination-like defects

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Authors: A. M. de M. Carvalho, G. R. [UNESP] Garcia, C. E. Furtado
Cited by: 1
References: 25

Abstract

In this paper, we develop a conformal formulation for two-dimensional geometries sourced by continuous distributions of topological defects, reducing the problem to a Poisson equation for the conformal factor. Throughout, we focus on radially symmetric, curvature-type (disclination-like) defect distributions in a torsion-free geometry. Closed-form solutions are obtained for Gaussian, exponential and power-law ([Formula: see text]) profiles. The Gaussian profile yields a regular core and an asymptotically flat far field. The exponential profile is treated on the punctured plane ([Formula: see text]), producing sharply localized curvature with finite total flux. For the [Formula: see text] case, we work on the punctured plane (or on annuli), obtaining an exterior logarithmic solution that encodes a conical geometry; more general power-law profiles require finite domains or decay to ensure integrability. In all cases, Gauss–Bonnet on annuli provides a global relation equating total curvature (holonomy/deficit angle) to the integrated defect density, while the [Formula: see text]-limit reproduces the standard conical geometry with distributional curvature. The framework offers a unified, physically motivated description of finite-core disclination-like defects relevant to analog gravity and two-dimensional material systems.

Fields of Study & Subjects

Black Holes and Theoretical Physics Homotopy and Cohomology in Algebraic Topology Geometric Analysis and Curvature Flows

Publication details

Journal / source
International Journal of Modern Physics A
Publisher
World Scientific Pub Co Pte Ltd
Volume
41
Issue
05
Publication date
10 January 2026
Language
EN