BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:Towards an explicit construction of de-Sitter solutions in D=10 su
pergravity
DTSTART;VALUE=DATE-TIME:20200429T060000Z
DTEND;VALUE=DATE-TIME:20200429T070000Z
DTSTAMP;VALUE=DATE-TIME:20200603T172016Z
UID:indico-event-342@cern.ch
DESCRIPTION:We revisit the stringy construction of four-dimensional de-Sit
ter solutions using orientifolds O8±\, proposed by Córdova et al. arXiv:
1911.04498. While the original analysis of the supergravity equations is l
argely numerical\, we obtain semi-analytic solutions by treating the curva
ture as a perturbative parameter. At each order we verify that the (permis
sive) boundary conditions at the orientifolds are satisfied. To illustrate
the advantage of our result\, we calculate the four-dimensional Newton co
nstant as a function of the cosmological constant. We also discuss how the
discontinuities at O8− can be accounted for in terms of corrections to
the worldvolume action.\n\nhttps://indico.ibs.re.kr/event/342/
LOCATION: On-line seminar
URL:https://indico.ibs.re.kr/event/342/
END:VEVENT
END:VCALENDAR