Conference
DREB 2020
The 11th international conference on Direct Reactions with Exotic Beams (DREB2020) is part of the biennial series, which began in 1999 at MSU, East Lansing, at the initiative of physicists working in the field from MSU, IPN-Orsay, and FSU. The following meetings were held at Orsay (2001), Guildford (2003), East Lansing (2005), Wako (2007), Tallahassee (2009), Pisa (2012), Darmstadt (2014), Halifax (2016), and Matsue (2018). The scientific program is devoted to the latest experimental and theoretical research and developments in nuclear reactions with exotic nuclei. The topics will include the following subjects relevant to direct reactions:
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Seminar
TBA
To be announced. Join Zoom Meeting https://cern.zoom.us/j/68174664372?pwd=NnlRbko0aDhvYk9ENzFIb05JOW5tQT09
Meeting ID: 681 7466 4372 Passcode: 367791 |
Seminar
PhD seminars: Pedro Agostini & Alessandra Gioventù
Pedro Agostini: The Color Glass Condensate The Color Glass Condensate is an effective theory that is achieved in the high energy limit of Quantum Chromodynamics, and it encodes a state of high density gluonic matter which controls the hadronic matter at this regime. In this talk we will review the basics of this theory, which is applied in the description of ultrarelativistic nuclear collisions. Alessandra Gioventù: Lepton Flavour Universality tests at the LHCb experiment In the Standard Model (SM) of particle physics, the muon and the tau particles are simply heavier copies of the electron, coupling with gauge bosons independently of their generation. This feature is called Lepton Flavour Universality (LFU). Latest measurements of LFU studying semileptonic transitions corresponding to b->c and b->s at the quark level show tension with the SM predictions. These results have opened the road to new searches of LFU violating processes also in the charm sector. An overview of the measurements performed by LHCb is reported. This is a new series of seminars given by IGFAE predoctoral researchers in which they introduce their latest works or results to the rest of PhD students. It will take place in the Aula C of Monte da Condesa building. If you want to participe, please write to alejandrovilar.lopez@usc.es and imanolcorredoira.fernandez@usc.es. Only PhDs are allowed 😉 |
Seminar
Eccentricity in Gravitational-Wave Transients
In 2015, Advanced LIGO made the first detection of gravitational waves. We now detect gravitational waves on a nearly weekly basis. The signals we observe come from coalescing compact binaries, which can be formed via two overarching formation channels: isolated and dynamical. When two stars co-evolve in the field, they are expected to have negligible eccentricity at detection, whereas dynamically-formed binaries can retain measurable eccentricity. Therefore, measurements of orbital eccentricity, encoded in the gravitational waveform, can be used to distinguish between binaries born in either scenario. In this talk, I explain how the two different formation channels lead to different distributions of eccentricity. I present constraints on eccentricity obtained for binary black hole and neutron star coalescences detected by Advanced LIGO and Virgo, including heavy double neutron star GW190425 and ‘monster’ binary black hole GW190521. Finally, I show how future detectors will enable us to constrain the formation epochs of globular clusters by tracking the relationship between redshift and eccentric merger rate. Join Zoom Meeting https://cern.zoom.us/j/68174664372?pwd=NnlRbko0aDhvYk9ENzFIb05JOW5tQT09 Meeting ID: 681 7466 4372 Passcode: 367791 |
Seminar
Cordas Club: An Introduction to the SYK model
An Introduction to the SYK model The quantum mechanical Sachdev-Ye-Kitaev (SYK) model has attracted attention in the last few years as it belongs to the small set of models exhibiting quantum chaos at the same time as being approximately solvable. We give a short introduction to the basic features of the model and extract the effective action in the large N limit. References: https://arxiv.org/pdf/1711.08482.pdf https://arxiv.org/pdf/2002.12187.pdf https://arxiv.org/pdf/1807.03334.pdf Covid restrictions: The room is big and we can safely keep a distance from each other, but of course all protocols are to be respected and masks will be mandatory for all attendants. Online meeting room details Details will be sent a few minutes before the session starts. |
Seminar
Light in the dark: GW190521 as a boson star merger
The detections of gravitational waves are opening a new window to the Universe. The nature of black holes and neutron stars may now be unveiled, but gravitational radiation may also lead to exciting discoveries of new exotic compact objects, oblivious to electromagnetic waves. In particular, Advanced LIGO-Virgo recently reported a short gravitational-wave signal (GW190521) interpreted as a quasi-circular merger of black holes, one at least populating the pair-instability supernova gap. We found that GW190521 is also consistent with numerically simulated signals from head-on collisions of two (equal mass and spin) horizonless vector boson stars (aka Proca stars). This provides the first demonstration of close degeneracy between these two theoretical models, for a real gravitational-wave event. Join Zoom Meeting https://cern.zoom.us/j/68174664372?pwd=NnlRbko0aDhvYk9ENzFIb05JOW5tQT09 Meeting ID: 681 7466 4372 Passcode: 367791 |
Seminar
Cordas club: An Introduction to the SYK model
Abstract: The quantum mechanical Sachdev-Ye-Kitaev (SYK) model has attracted attention in the last few years as it belongs to the small set of models exhibiting quantum chaos at the same time as being approximately solvable. We give a short introduction to the basic features of the model and extract the effective action in the large N limit. References: https://arxiv.org/pdf/1711.08482.pdf https://arxiv.org/pdf/2002.12187.pdf https://arxiv.org/pdf/1807.03334.pdf Covid restrictions: The room is big and we can safely keep a distance from each other, but of course all protocols are to be respected and masks will be mandatory for all attendants. Zoom details: ión Zoom https://us02web.zoom.us/j/82020421452?pwd=Rk1CNUI4WEF2MmF2NWhXMjJNd3JsQT09 ID de reunión: 820 2042 1452 Código de acceso: AdSCFT This talk is part of the Cordas Club. It will take place in Aula C (the one in the left corner as you enter IGFAE) for those who can come and will also be broadcasted by Zoom. |
Seminar
Transfronteirizas, conversas de arte e ciencia con Anna R. Figueiredo y José Edelstein
La vicepresidenta de la Asociación de Escritoras e Escritores en Lingua Galega (AELG) y doctora en Física, Anna R. Figueiredo participará el próximo jueves, 8 de abril, en la octava conversación virtual del ciclo del Instituto Galego de Física de Altas Enerxías (IGFAE). Moderado por el investigador del IGFAE y profesor de la USC José Edelstein, el encuentro emitido en directo por el canal de Youtube del IGFAE tiene por objetivo tender puentes y fomentar la participación entre la sociedad y la comunidad investigadora a través de distintas expresiones artísticas: la literatura y la ciencia en esta ocasión. https://bit.ly/annafigueiredoIGFAE |
Seminar
Probing the Standard Model with rare decays at the LHCb experiment
Rare decays are powerful tools to search for New Physics. In recent years a series of deviations from the Standard Model has been observed in studies of rare decays with the LHCb experiment culminating in the evidence for lepton flavour universality violation 2 weeks ago. I will present results from the rich program of LHCb measurements in the rare decays sector, focusing on purely leptonic and lepton=-flavour violating B decays and their relation to the brand new results. Join Zoom Meeting https://cern.zoom.us/j/68174664372?pwd=NnlRbko0aDhvYk9ENzFIb05JOW5tQT09
Meeting ID: 681 7466 4372 Passcode: 367791 |
Seminar
Cordas Club: The Eigenstate Thermalization Hypothesis.
I will give a 2 part talk. In the first one, I will highlight the essentials of the ETH following in the review 1509.06411. In a second one, I will show that the ansatz applies to the case of the SYK Hamiltonian, following the paper 1707.08013. References: https://arxiv.org/pdf/1509.06411.pdf https://arxiv.org/pdf/1707.08013.pdf Zoom details https://us02web.zoom.us/j/82020421452?pwd=Rk1CNUI4WEF2MmF2NWhXMjJNd3JsQT09 ID de reunión: 820 2042 1452 Código de acceso: AdSCFT This talk is part of the new Cordas Club. It will take place in Aula C (the one in the left corner as you enter IGFAE) for those who can come and will also be broadcasted by Zoom. |
