Paper

{
  "raw_xml": "<entry>\n    <id>http://arxiv.org/abs/2603.03722v1</id>\n    <title>Scalar quasinormal modes of rotating black holes in parity-violating gravity</title>\n    <updated>2026-03-04T04:48:59Z</updated>\n    <link href='https://arxiv.org/abs/2603.03722v1' rel='alternate' type='text/html'/>\n    <link href='https://arxiv.org/pdf/2603.03722v1' rel='related' title='pdf' type='application/pdf'/>\n    <summary>Recently, an exact rotating black hole solution in a parity-violating theory of gravity was obtained via a conformal transformation of the Kerr solution in general relativity, with parity-violating effects encoded in the conformal factor. We study the quasinormal modes (QNMs) of a test scalar field minimally coupled to gravity on this conformal Kerr background, treating the parity-violating effects perturbatively while allowing for arbitrary black hole spin, from the non-rotating case to the near-extremal regime. For low spin, we derive a perturbative formula for the QNM frequencies that includes the leading-order parity-violating correction. For high spin, particularly in the near-extremal regime, we find sizable deviations from the Kerr QNM frequencies. Our results point to a new avenue for probing parity-violating physics in the strong-gravity regime through black hole QNMs.</summary>\n    <category scheme='http://arxiv.org/schemas/atom' term='gr-qc'/>\n    <category scheme='http://arxiv.org/schemas/atom' term='astro-ph.HE'/>\n    <category scheme='http://arxiv.org/schemas/atom' term='hep-th'/>\n    <published>2026-03-04T04:48:59Z</published>\n    <arxiv:comment>18 pages, 3 figures</arxiv:comment>\n    <arxiv:primary_category term='gr-qc'/>\n    <author>\n      <name>Hiroaki W. H. Tahara</name>\n    </author>\n    <author>\n      <name>Hayato Motohashi</name>\n    </author>\n    <author>\n      <name>Kazufumi Takahashi</name>\n    </author>\n    <author>\n      <name>Vicharit Yingcharoenrat</name>\n    </author>\n  </entry>"
}