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researcher

S. Hirai

11 papers hereh-index 560 citations35 works total

Matching runs newest-first, so older work may not be attached to this profile yet.

author position
  • sole author3
  • first author6
  • middle author2

Across the 11 of 11 papers where every author was matched, so the position is known.

fields
  • astro-ph6
  • astro-ph.CO2
  • hep-th2
  • hep-ph1
same name
  • S. Hirai — 4 papers, h 14
  • S. Hirai — 1 paper, h 3

Either other researchers who publish under this name, or the same person where the external sources have not merged their records.

identity via Semantic Scholar / OpenAlex

activity
20022010
most citedEffect of the length of inflation on angular TT and TE power spectra in power-law inflation

10 citations · 22 across the 11 of their papers we have counts for

collaborators
Showing 2002Show all

1 paper · 1 filter

hep-th2002★ 9 cited

Initial condition of scalar perturbation in inflation

Shiro Hirai

A formula for the power spectrum of curvature perturbations having any initial conditions in inflation is obtained. Based on the physical conditions before inflation, the possibili…

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Not affiliated with arXiv. Researcher data from Semantic Scholar (ODC-BY) and OpenAlex.