Scholarlink

<p>The Janis-Newman-Winicour (JNW) spacetime possesses a naked singularity, although it represents an exact particle-like solution to the Einstein-Klein-Gordon theory with a massless scalar field. Here, we investigate the possible formation of a naked singularity in the JNW spacetime, using the thin-shell approximation to describe the gravitational collapse. By introducing different matter contents to construct thin-shells, we demonstrate the impossibility of naked singularity formation during the gravitational collapse unless the <i>causality</i> or <i>null energy condition</i> of the thin-shell is violated. Therefore, forming a visible naked singularity is impossible, and the weak cosmic censorship is satisfied.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Can a naked singularity be formed during the gravitational collapse of a Janis-Newman-Winicour solution?

  • 期刊论文

  • 发表日期：

    2025年7月8日

查看全文
  • Xiao Yan Chew,
  • Il Gyeong Choi,
  • Hyuk Jung Kim,
  • Dong-han Yeom

摘要

The Janis-Newman-Winicour (JNW) spacetime possesses a naked singularity, although it represents an exact particle-like solution to the Einstein-Klein-Gordon theory with a massless scalar field. Here, we investigate the possible formation of a naked singularity in the JNW spacetime, using the thin-shell approximation to describe the gravitational collapse. By introducing different matter contents to construct thin-shells, we demonstrate the impossibility of naked singularity formation during the gravitational collapse unless the causality or null energy condition of the thin-shell is violated. Therefore, forming a visible naked singularity is impossible, and the weak cosmic censorship is satisfied.