http://cp3.irmp.ucl.ac.be:80/PAI Common activities, 1_CP3, 2_IIHE, Joint Seminars THEP, Antwerpen HEP events, ULB PhysTH, IFPA (ULg) seminars, Antwerpen HEP events, BEL-center, BEL-center:pheno, BEL-center:theory, IFPA (ULg) seminars, IIHE, Joint Seminars THEP, ULB PhysTH, HEP seminars Leuven, VUB Pheno, Common activities, CP3 Calendar - Week of 10/25/2026 http://cp3.irmp.ucl.ac.be:80/PAI/day.php?getdate=20261026&cal=0_common%2C1_CP3%2C2_IIHE%2C3_Joint-THEP%2C4_Antwerpen%2C5_PhTh-FI-ULB%2C6_IFPA-ULg%2CAntwerpen%2CBEL-center%2CBEL-center_pheno%2CBEL-center_theory%2Ccommon%2CCP3%2CIFPA-ULg%2CIIHE%2CJoint-THEP%2CPhTh-FI-ULB%2CTHEP_Leuven%2CVUB Mon Oct 26 2026 2:00 PM: <b>Dark matter from phase transitions - phase transitions from dark matter</b>I will present the intriguing interplay between cosmological phase transitions and the out-of-equilibrium production of dark matter. If dark matter is produced non-thermally via non-renormalisable interactions (so-called UV-dominated freeze-in), the resulting abundance depends sensitively on the entire cosmological history. In particular, it can be strongly affected by cosmological first-order phase transition, after which the decaying scalar field transfers its energy density to the SM radiation and dilutes pre-existing particle abundances. I will discuss how this phase-in mechanism introduces a dependence of the final DM abundance on the details of the phase transition, in particular the subsequent equation of state of the universe. Using results from lattice simulations, I will show that the collision of highly-relativistic bubble walls leads to an equation of state that may differ significantly fro http://cp3.irmp.ucl.ac.be:80/PAI/day.php?getdate=20261027&cal=0_common%2C1_CP3%2C2_IIHE%2C3_Joint-THEP%2C4_Antwerpen%2C5_PhTh-FI-ULB%2C6_IFPA-ULg%2CAntwerpen%2CBEL-center%2CBEL-center_pheno%2CBEL-center_theory%2Ccommon%2CCP3%2CIFPA-ULg%2CIIHE%2CJoint-THEP%2CPhTh-FI-ULB%2CTHEP_Leuven%2CVUB Tue Oct 27 2026 10:00 AM: Solvay+room http://cp3.irmp.ucl.ac.be:80/PAI/day.php?getdate=20261028&cal=0_common%2C1_CP3%2C2_IIHE%2C3_Joint-THEP%2C4_Antwerpen%2C5_PhTh-FI-ULB%2C6_IFPA-ULg%2CAntwerpen%2CBEL-center%2CBEL-center_pheno%2CBEL-center_theory%2Ccommon%2CCP3%2CIFPA-ULg%2CIIHE%2CJoint-THEP%2CPhTh-FI-ULB%2CTHEP_Leuven%2CVUB Wed Oct 28 2026 10:00 AM: Solvay+room http://cp3.irmp.ucl.ac.be:80/PAI/day.php?getdate=20261029&cal=0_common%2C1_CP3%2C2_IIHE%2C3_Joint-THEP%2C4_Antwerpen%2C5_PhTh-FI-ULB%2C6_IFPA-ULg%2CAntwerpen%2CBEL-center%2CBEL-center_pheno%2CBEL-center_theory%2Ccommon%2CCP3%2CIFPA-ULg%2CIIHE%2CJoint-THEP%2CPhTh-FI-ULB%2CTHEP_Leuven%2CVUB Thu Oct 29 2026 10:00 AM: Solvay+room http://cp3.irmp.ucl.ac.be:80/PAI/day.php?getdate=20261029&cal=0_common%2C1_CP3%2C2_IIHE%2C3_Joint-THEP%2C4_Antwerpen%2C5_PhTh-FI-ULB%2C6_IFPA-ULg%2CAntwerpen%2CBEL-center%2CBEL-center_pheno%2CBEL-center_theory%2Ccommon%2CCP3%2CIFPA-ULg%2CIIHE%2CJoint-THEP%2CPhTh-FI-ULB%2CTHEP_Leuven%2CVUB Thu Oct 29 2026 12:30 PM: PhysTh+seminar+room+%28Building+NO%2C+7th+floor%2C+room+110%29 http://cp3.irmp.ucl.ac.be:80/PAI/day.php?getdate=20261029&cal=0_common%2C1_CP3%2C2_IIHE%2C3_Joint-THEP%2C4_Antwerpen%2C5_PhTh-FI-ULB%2C6_IFPA-ULg%2CAntwerpen%2CBEL-center%2CBEL-center_pheno%2CBEL-center_theory%2Ccommon%2CCP3%2CIFPA-ULg%2CIIHE%2CJoint-THEP%2CPhTh-FI-ULB%2CTHEP_Leuven%2CVUB Thu Oct 29 2026 1:00 PM: Group lunch B5c B5A+or+B5C