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SUMMARY:Primary black-hole scalar charges and kinetic screening in K-essen
 ce-Gauss-Bonnet gravity
DTSTART;VALUE=DATE-TIME:20260521T065000Z
DTEND;VALUE=DATE-TIME:20260521T072000Z
DTSTAMP;VALUE=DATE-TIME:20260530T171840Z
UID:indico-contribution-2456@indico.itp.ac.cn
DESCRIPTION:Speakers: Georg Trenkler (IBS CTPU-CGA)\nBlack holes beyond Ge
 neral Relativity may carry non-standard charges that impact their phenomen
 ology. I will present the scalar charge that is induced by the scalar-Gaus
 s-Bonnet coupling and how it is affected by the presence of a nontrivial k
 inetic term K(X). I will discuss the corresponding kinetic screening in th
 e asymptotically flat\, static solution first. I will then turn to the cas
 e where self-accelerating cosmology is driven by K(X)\, finding that the t
 ime-dependence of the scalar field opens up the parameter space\, turning 
 the black-hole scalar charge from secondary to primary. I will provide a s
 tability analysis and a measure of the intensity of the kinetic screening 
 from the quartic dispersion relation of the mixed scalar and gravitational
  modes.\n\nhttps://indico.itp.ac.cn/event/419/contributions/2456/
LOCATION:Small Lecture Hall\, Chongqing University Library (图书馆小
 报告厅) 1F-9
URL:https://indico.itp.ac.cn/event/419/contributions/2456/
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