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SUMMARY:Development of generic no-scale inflation
DTSTART;VALUE=DATE-TIME:20240723T065500Z
DTEND;VALUE=DATE-TIME:20240723T072000Z
DTSTAMP;VALUE=DATE-TIME:20260512T214357Z
UID:indico-contribution-1244@indico.itp.ac.cn
DESCRIPTION:Speakers: Lina Wu (Xi’an Technological University)\nWe devel
 op generalized no-scale supergravity models of inflation\, and then study 
 the corresponding cosmological predictions as well as the formation of pri
 mordial black holes (PBHs) and scalar-induced gravitational waves (SIGWs).
  With a new parameter $a$\, the generalized no-scale supergravity provides
  the continuous connections among the generic no-scale supergravity from s
 tring theory compactifications. The resulting prediction of the CMB\, spec
 trum index $n_s$\, and tensor-to-scalar ratio $r$ can be highly consistent
  with the latest Planck/BICEP/Keck Array observations. Notably\, the model
 s with $a\\neq 1$ give a smaller ratio $r\\leq 10^{-3}$\, which is flexibl
 e even under the anticipated tighter observational constraints at the futu
 re experiments.  Additionally\,  these models have the potential to genera
 te a broad-band stochastic gravitational wave background\, and thus explai
 n the NANOGrav 15yr signal. Furthermore\, they predict the formation of PB
 Hs with various mass scales\, which could account for a significant portio
 n of dark matter relic density in the Universe.\n\nhttps://indico.itp.ac.c
 n/event/244/contributions/1244/
LOCATION:
URL:https://indico.itp.ac.cn/event/244/contributions/1244/
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