Flávio Coelho's Ph.D. defense
Gr@v Ph.D. student Flávio Coelho successfully defended his Ph.D. thesis with title "Radiadion from a D-dimensional collision of gravitational shock waves" on February 20th 2015. Congratulations Flávio!
High Energy Physics News & Events
Addressing flavour problems with symmetries: Family & CP
Speaker
Ivo de Medeiros Varzielas (University of Southampton)
Event date
Venue
GAP room
Event type
Abstract: In this seminar I will start by generalising concepts used in the Standard Model (of Particle Physics). My first goal is to show how symmetries acting non-trivially on the generations (by relating e.g.
Signatures of Hidden Technicolor
Speaker
Roman Pasechnik (THEP - Lund U.)
Event date
Venue
GAP room
Event type
Abstract: I present the minimal QCD-like composite Higgs boson scenario based upon a phenomenologically consistent 3-flavor Dirac ultraviolet completion and confined SU(2) dynamics.
Updated Constraints on the Higgs Singlet Extension of the SM
Speaker
Tania Robens (IKTP - Dresden)
Event date
Venue
GAP room
Event type
Abstract: We discuss the current status of theoretical and experimental constraints on the real Higgs singlet extension of the Standard Model. For the second neutral (non-standard) Higgs boson we consider the full mass range from 30 GeV to 1 TeV, which is accessable to past and present collider experiments.
Interview to Porto Canal
C. Herdeiro was the guest interviewee of Porto Canal's "Mentes que Brilham". Watch and listen to the conversation with interviewer Cláudia Fonseca about black holes and some of the research work made at Gr@v in this area.
Two-loop stability of a complex singlet extended Standard Model
Speaker
António Morais
Event date
Venue
GAP room
Event type
VII Black Holes Workshop
Event date
Venue
Physics Amphitheatre
Ends on
Event Website
Event type
From astrophysics to high-energy physics, from information theory to quantum gravity, black holes have acquired an ever increasing role in fundamental physics, and are now part of the terminology of many important branches of observational, theoretical and mathematical physics. This workshop aims at bringing together experts about black holes in all their aspects.
The fourth edition of the Black Holes Workshop will be held at the University of Aveiro in 18-19 December 2014.
Vacuum Structure in Two-Higgs Doublet Models
Speaker
Pedro Ferreira (Centro de Física Teórica e Computacional)
Event date
Venue
GAP room
Event type
Abstract: The Two-Higgs Doublet Model (2HDM) is one of the simples extensions of the Standard Model (SM) of particle physics. The introduction of a second Higgs doublet has interesting phenomenological consequences, namely a more complex vacuum structure than the SM's. In fact, in the 2HDM there are three possible types of vacua: the electroweak vacuum analogous to the SM one; the charge breaking vacuum, in which the electromagnetism symmetry is also broken, leaving the photon massive; and the CP breaking vacuum, for which the CP symmetry is spontanelously broken, alongside the electroweak symmetry. In this seminar we will demonstrate the impossibility of simultaneous coexistence of diferente types of mínima. We will also discuss the possible existence of tree-level metastable electroweak vacua, their importance in the light of the recente Higgs boson discovery at the LHC and the conditions which determine their existence and location of the global minimum of the model. We will finally discuss the generalization of these results for models with N Higgs doublets.
Shock wave collisions à la Veneziano vs à la Gr@v
Speaker
Marco Sampaio
Event date
Venue
GAP room
Event type
Grand Unification
Speaker
David J. Miller (U. Glasgow)
Event date
Venue
Physics Amphitheatre
Event type
Abstract: The discovery of the Higgs boson and the subsequent award of the Nobel Prize completes the Standard Model of Particle Physics. However, the Standard Model is not a complete description of fundamental physics and leaves many questions unanswered. In this colloquium I will give an overview of the Standard Model and discuss its flaws and omissions.