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SUMMARY:Gravitational Waves as a Window on Conformal Neutrino-Mass Models
DTSTART:20260113T163000Z
DTEND:20260113T180000Z
DTSTAMP:20260811T220627Z
UID:f51b3006-1772-4417-940a-e1cfce03059f
SEQUENCE:2
CREATED:20260109T153753Z
DESCRIPTION:Covering a broad frequency range — from millihertz space int
 erferometers up to the kilohertz band of ground-based detectors — this t
 alk discusses how primordial gravitational waves can probe High-Energy Phy
 sics beyond the Standard Model. Focusing on supercooled first-order phase 
 transitions in (classically) conformal U(1)′ extensions that account for
  neutrino masses via the type-I seesaw (Majoron-like realizations)\, I sho
 w how the predicted stochastic GW background becomes tightly linked to the
  symmetry-breaking scale\, couplings\, and the heavy-neutrino sector\, wit
 h present LVK data already constraining parts of parameter space and futur
 e LISA/ET observations offering decisive tests. Building on this\, I highl
 ight how sufficiently strong and long-lasting transitions can simultaneous
 ly source primordial black holes and primordial magnetic fields\, enabling
  multi-messenger correlations with microlensing and gamma-ray probes.
LAST-MODIFIED:20260109T153805Z
LOCATION:DF Seminar Room (2-8.3)\, 2nd floor of Physics Building
URL:http://df.vps.tecnico.ulisboa.pt/pt/eventos/gravitational-waves-as-a-w
 indow-on-conformal-neutrino-mass-models/
X-ALT-DESC;FMTTYPE=text/html:<p data-block-key="wopc7">Covering a broad fr
 equency range — from millihertz space interferometers up to the kilohert
 z band of ground-based detectors — this talk discusses how primordial gr
 avitational waves can probe High-Energy Physics beyond the Standard Model.
 <br/><br/> Focusing on supercooled first-order phase transitions in (class
 ically) conformal U(1)′ extensions that account for neutrino masses via 
 the type-I seesaw (Majoron-like realizations)\, I show how the predicted s
 tochastic GW background becomes tightly linked to the symmetry-breaking sc
 ale\, couplings\, and the heavy-neutrino sector\, with present LVK data al
 ready constraining parts of parameter space and future LISA/ET observation
 s offering decisive tests.<br/><br/> Building on this\, I highlight how su
 fficiently strong and long-lasting transitions can simultaneously source p
 rimordial black holes and primordial magnetic fields\, enabling multi-mess
 enger correlations with microlensing and gamma-ray probes.</p>
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