February 2024 - Hep-pheno - listserv.vub.be

GW seminar Tuesday 20 February at 14:00 at VUB
by Alberto Mariotti 16 Feb '24

16 Feb '24

Dear All, this is an announcement for a seminar on Tuesday the 20th February at 14:00 at VUB in the Sacton room (1G003). Ville Vaskonen from Padova University will give a talk about: Title: Black holes and gravitational waves from slow phase transitions Here the indico webpage of the event https://indico.iihe.ac.be/event/1868/ I hope to see you there, Kind regards, Alberto #---------------------------------------------------------------------# Alberto Mariotti Vrije Universiteit Brussel (VUB) https://we.vub.ac.be/HEPVUB Phone: +32 (0) 2 629 32 15 E-mail: alberto.mariotti(a)vub.be Address: Vrije Universiteit Brussel Physics Department Elementary Particles Research Group Pleinlaan 2, 1050 Brussels, Belgium #---------------------------------------------------------------------#

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Fwd: [allusers-iihe] First HEP@VUB colloquium of the year
by Alberto Mariotti 15 Feb '24

15 Feb '24

FYI > Begin forwarded message: > > From: Mitja Desmet via allusers-iihe <allusers-iihe(a)listserv.vub.be> > Subject: [allusers-iihe] Re: First HEP@VUB colloquium of the year > Date: 15 February 2024 at 15:18:12 CET > To: "hep(a)listserv.vub.be" <hep(a)listserv.vub.be> > Cc: IIHE allusers <allusers-iihe(a)listserv.vub.be> > Reply-To: Mitja Desmet <Mitja.Desmet(a)vub.be> > > Dear all, > > This is a friendly reminder of our HEP@VUB colloquium by Paul Coppin on the 29th of February (see below). Don't forget to register on the Indico page to claim your cake and sandwich (before the 21/02):https://indico.iihe.ac.be/event/1978/ . > > Kind regards, > > The HEP@VUB organisers > > Van: Mitja Desmet <Mitja.Desmet(a)vub.be <mailto:Mitja.Desmet@vub.be>> > Verzonden: woensdag 31 januari 2024 10:40 > Aan: hep(a)listserv.vub.be <mailto:hep@listserv.vub.be> <hep(a)listserv.vub.be <mailto:hep@listserv.vub.be>> > Onderwerp: [hep] First HEP@VUB colloquium of the year > > Dear colleagues, > > We are happy to announce our first colloquium in the context of HEP@VUB, on the 29th of February. Paul Coppin, former IIHE member, is coming from the University of Geneva to talk about his current research involvingThe Dark Matter Particle Explorer (DAMPE). To celebrate the occasion, cakes will be provided (next to the usual sandwiches). We kindly ask you to register on the Indico page: https://indico.iihe.ac.be/event/1978/ . This is an excellent opportunity for all members of the department to reconnect with a former colleague and learn more about the awesome research done with DAMPE! > > For the organizers, > > > > MITJA DESMET > PhD Student > Physics Department > T +32 (0)2 629 34 55 > K G.1.59/D1 > > > _______________________________________________ > allusers-iihe mailing list -- allusers-iihe(a)listserv.vub.be <mailto:allusers-iihe@listserv.vub.be> > To unsubscribe send an email to allusers-iihe-leave(a)listserv.vub.be <mailto:allusers-iihe-leave@listserv.vub.be>

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Visit of Ville Vaskonen to VUB
by Miguel Vanvlasselaer 08 Feb '24

08 Feb '24

Dear all, From Monday 19th February to the wednesday 21th, we will receive Ville Vaskonen who has worked a lot in the fields of early universe phase transitions and black holes phenomenology. Do not hesitate to pass by our offices if you want to discuss with him. He will give a talk on Tuesday the 20th at 14:00 in the Sancton room: Black holes and gravitational waves from slow phase transitions The Universe may have deviated from the radiation-dominated expansion during the earliest epochs and the processes causing that can have interesting observable consequences. In this talk, I will focus on strongly supercooled phase transitions that cause a secondary period of exponential expansion of the Universe. I will describe a class of particle physics models where such transitions can happen and discuss the observable consequences of the process in the form of gravitational waves (GWs) and primordial black holes (PBHs). I will show that if the transition is slow the GW signal generated by colliding bubble walls and fluid shells can be very strong and potentially gives a good fit to the GW background recently discovered in the pulsar timing array data. I will also show that such slow transitions lead to the formation of a large PBH abundance that can constitute all dark matter and a secondary GW signal that dominates over the signal formed by the bubble walls and fluid shells if the transition is sufficiently slow. I hope to see you there, Kind regards, Miguel

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JC 06/02
by Miguel Vanvlasselaer 05 Feb '24

05 Feb '24

Dear all, Our next jc tomorrow 06/02 at 2pm in the Sancton room. Hannah will talk about her finirshing work "Gravitational Waves arising from a stiff epoch". Hope to see you there, Best, Miguel

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