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X-WR-CALNAME:Instituto de Física Teórica
X-ORIGINAL-URL:https://www.ift.uam-csic.es
X-WR-CALDESC:Events for Instituto de Física Teórica
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TZID:Europe/Madrid
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DTSTART:20250330T010000
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DTSTART:20251026T010000
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BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260528T120000
DTEND;TZID=Europe/Madrid:20260528T130000
DTSTAMP:20260614T063917
CREATED:20260525T061614Z
LAST-MODIFIED:20260525T061614Z
UID:25089-1779969600-1779973200@www.ift.uam-csic.es
SUMMARY:SPS Journal Club: Heterotic Ouroboros
DESCRIPTION:Strings\, Pheno and the Swampland (SPS) Journal Club \n\nTitle: Heterotic Ouroboros\n\nSpeaker: Chiara Altavista (IFT)\n\nVenue&Time: Red Room / 12:00\n\nAbstract: M-theory on {\mathbf{S}}^1\vee{\mathbf{S}}^1 has recently been proposed to yield\, via quotients\, ten-dimensional non-supersymmetric string theories. We revisit the construction that leads to the heterotic theories\, finding a consistent set of rules that reproduces the light spectra and gauge groups\, including indications of their global structure. Our approach uses the gauge enhancement mechanism of type I’ string theory\, applied to a setting in which the type I’ interval is curled onto itself\, with its two boundaries separated by a branch cut. Using these tools\, we reproduce the ten-dimensional heterotic theories and provide some evidence for junctions among them.
URL:https://www.ift.uam-csic.es/event/sps-journal-club-heterotic-ouroboros/
LOCATION:IFT Seminar Room/Red Room\, Instituto de Física Teórica (IFT) -C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, 28049\,\, Spain
CATEGORIES:Journal clubs,Scientific activities
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BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260528T120000
DTEND;TZID=Europe/Madrid:20260528T130000
DTSTAMP:20260614T063917
CREATED:20260525T061812Z
LAST-MODIFIED:20260525T061812Z
UID:25091-1779969600-1779973200@www.ift.uam-csic.es
SUMMARY:Pheno Journal Club
DESCRIPTION:Every Thursday at 12:00 in Grey Room 2.
URL:https://www.ift.uam-csic.es/event/pheno-journal-club-15/
LOCATION:Grey Room 2\, Instituto de Física Teórica\, Madrid\, Madrid\, 28037\, Spain
CATEGORIES:Journal clubs,Scientific activities
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260528T150000
DTEND;TZID=Europe/Madrid:20260528T160000
DTSTAMP:20260614T063917
CREATED:20260330T092531Z
LAST-MODIFIED:20260330T092531Z
UID:24676-1779980400-1779984000@www.ift.uam-csic.es
SUMMARY:Seminar by Marco Finetti (U. Aveiro)
DESCRIPTION:Title: ‘First Order Phase Transitions and Gravitational Waves’ \nVenue&Time: Red Room / 15:00 \nSpeaker: Marco Finetti (U. Aveiro) \nAbstract: The Laser Interferometer Space Antenna (LISA) will be the first space-based gravitational wave (GW) detector\, opening a new observational window for both astrophysics and early-Universe cosmology. Operating in the millihertz band\, it will probe a rich superposition of GW signals. Astrophysical population models predict a sufficient number of signals in the LISA band to blend together and form an irresolvable Galactic foreground noise. In addition\, a stochastic gravitational wave background (SGWB) of cosmological origin could add an unknown component to the measured noise. In this talk\, I will assess the bias induced on the parameter estimation of stochastic signals\, arising from the unresolved binaries buried within the cosmological signal. Using a representative SGWB model\, I will quantify the impact of this effect on the reconstruction of the foreground template parameters and\, most importantly\, on those of the SGWB model itself. Neglecting inter-template correlations can lead to significan biases\, and\, for several benchmark cases\, those biases exceed the statistical reconstruction uncertainties. These findings expose a key limitation of existing template-based strategies and indicate that unbiased component separation will likely require additional information\, such as constraints from resolved sources obtained through global-fit analyses.
URL:https://www.ift.uam-csic.es/event/seminar-by-marco-finetti-u-aveiro/
LOCATION:Madrid
CATEGORIES:Scientific activities,Seminars
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