-
Xavier Luri06/02/2023, 10:00
-
Esther Pallares06/02/2023, 10:10
The manager of the Institute is going to explain the different services the secretariat provides for the researchers.
Go to contribution page -
Pol Morell Ferrer (Institut de Ciències del Cosmos (ICCUB))06/02/2023, 10:40
The low energy effective theory (LEFT) provides a general framework for the analysis and interpretation of any experimental data at energies below the electroweak scale. This includes most of the data we have today in particle physics, e.g. lepton and hadron decays and mixing, electric and magnetic dipole moments, cross sections in GeV-scale collisions and other particle properties.
Go to contribution page
In this... -
4. The cosmological gravitational wave background: from theoretical modelling to detection prospectsJacopo Fumagalli (ICCUB)06/02/2023, 11:05
One of the main targets for upcoming gravitational wave observatories is the detection of a cosmological stochastic gravitational wave background (SGWB). Such a signal has the potential to shed light on part of the cosmological history not accessible by other means as well as to probe new physics at energy scales beyond the reach of terrestrial experiments.
Go to contribution page
A stochastic background, for... -
Ayaka Usui (ICCUB)06/02/2023, 12:00
Entropy production was originally a phenomenological concept and quantifies irreversibility by accounting for all changes in entropy, which is positive by virtue of the second law of thermodynamics. Afterwards, entropy production was derived microscopically, and its derivations date back to Boltzmann, von Neumann, and others. Nowadays, small open quantum systems far from equilibrium have been...
Go to contribution page -
Aichen Li (University of Barcelona, ICCUB)06/02/2023, 12:25
At first, the primordial black hole formation in a spherically symmetric model of density perturbation will be introduced, known as Three-zone model. And then I would like to explain some shortages regarding to this model. Finally, a more realistic scenario will be shown.
Go to contribution page -
Miguel Ángel Escobedo Espinosa (Universitat de Barcelona)06/02/2023, 12:50
The quark-gluon plasma (QGP) is a new state of matter that appears at extremely large temperatures and densities. This phase appeared in the early universe and, nowadays, we can recreate it in the laboratory using ultrarelativistic heavy ion collisions. However, it is very challenging to obtain information about the matter created in these collisions as the medium only exists for a very small...
Go to contribution page -
Chervin Laporte (ICCUB-IEEC)06/02/2023, 14:30
The discovery of a large highly radially anisotropic kinematic structure dominating the vast majority of the stellar halo of the Milky Way (better known as the Gaia-Sausage-Enceladus merger debris, GSE) has prompted several studies in the recent years to report discoveries of other debris. Whilst evidence in favour of the GSE merger has continued to grow, the consensus around the origins of...
Go to contribution page -
Hristijan Kochankovski (Departament de Fisica Quantica i Astrofisica and Institut de Ciencies del Cosmos, Universitat de Barcelona, Marti i Franques 1, 08028, Barcelona, Spain)06/02/2023, 14:55
Neutron stars are natural laboratories for studying strongly correlated matter in extreme conditions. In such an environment, exotic components, such as hyperons can appear. Their impact is significant on the mass-radius relation for the cold neutron stars but also on the thermal quantities that are essential for describing violent phenomena such as supernovae explosions or binary neutron star...
Go to contribution page -
Mark Gieles (ICC)06/02/2023, 15:20
Almost 100 binary black holes (BBH) have been detected by the LIGO-Virgo detectors, and the field of gravitational wave astronomy and astrophysics is rapidly growing. I will present recent result from the ICCUB Virgo group, which tries to understand the mechanism of BBH formation in the Universe and how the properties of the ones that eventually coalesce can be used to shed light on their origin.
Go to contribution page -
Jordi Folch (TU Dortmund/University of Barcelona)06/02/2023, 16:15
In this talk I outline the motivation for BSM physics, and focus on the opportunity that flavour physics offers for new physics searches. After the introduction and motivation we look at a concrete BSM model, the Dark Photon. We perform an analysis for 2-body meson and baryon decays which allows to set bounds on the flavour-changing couplings of the model.
Go to contribution page -
Javier Rodrigo Martínez (Universitat de Barcelona)06/02/2023, 16:40
Early-type OB stars are hot and have strong radiation fields that accelerate supersonic winds that can reach velocities of a few thousands of km/s. Most of these stars are part of binary systems, and some are kicked away from their orbits by a supernova explosion of their companion or because of tidal gravitational disruptions. The ejected star is denominated runaway and has typical supersonic...
Go to contribution page -
Juan Torres-Rincon (ICCUB)06/02/2023, 17:05
Heavy-ion collision experiments are essential to the goal of characterizing QCD matter properties at different conditions of temperature and density. From the theoretical side, the determination of the QCD phase diagram is only possible at very particular regions, and effective models provide useful, but not definite results. In this talk I will elaborate on how heavy-ion experiments allow to...
Go to contribution page -
Xavier Luri (ICCUB), David Gascon Fora (ICCUB. Universitat de Barcelona), Jordi Portell de Mora (ICCUB), Bruno Juliá-Díaz (Universitat de Barcelona)07/02/2023, 10:00
-
Arnau Aguasca-Cabot07/02/2023, 10:25
A nova is a thermonuclear runaway explosion that takes place at the surface of a white dwarf in a binary system. The detection of novae at high-energy gamma rays (HE, E>100 MeV) in 2010 unveiled the extreme conditions that take place when a nova outburst occurs. At the same time, these detections posed a number of questions on the hadronic or leptonic origin of the gamma-ray emission, on the...
Go to contribution page -
Maria Arazo (Universitat de Barcelona)07/02/2023, 10:50
Quantum fluctuations can stabilize bosonic mixtures and Bose-Einstein condensates (BECs) with dipolar interactions against the collapse predicted by the mean-field theory. This stabilization mechanism allows for two new states of matter to arise: self-bound quantum droplets and dipolar supersolids. When dipolar interactions between the atoms are present, these droplets can self-assemble into...
Go to contribution page -
David Gascon Fora (ICCUB. Universitat de Barcelona)07/02/2023, 11:45
The Technological Unit of the ICCUB is currently providing several groups of ICCUB with services, such as instrumentation and software development, in order to support their contributions to international collaborations. Many developments on instrumentation are related to sensitive photosensor readout technology with key contributions in international projects such as LHCb, CTA, HERD, LISA and...
Go to contribution page -
Jordi Portell de Mora (ICCUB)07/02/2023, 12:10
The ICCUB Technological Unit is contributing to the software development and data processing of several projects. The most important one is Gaia, both on its data processing and on its catalogue validation and data mining aspects, but we are progressively increasing our contributions to other projects such as Virgo, ET, PLATO, nanosatellites, and soon LISA. In this talk I will present and...
Go to contribution page -
Josep Manel Carrasco Martínez (Institut d'Estudis Espacials de Catalunya), Jose Maria Gomez Cama07/02/2023, 12:35
Photsat is the first astrophysics observatory being prepared by the catalan institute of space studies (IEEC) to be allocated in a cubesat mission. The mission aims to survey the full sky during 2-3 years, obtaining photometric lightcurves for V<12-15 mag in several photometric filters, covering the optical and the ultraviolet range. This will provide information of the transient sky at the...
Go to contribution page -
David Mateos (ICREA & U Barcelona)07/02/2023, 14:30
The discovery of gravitational waves has opened a new experimental window into the Universe. The fact that the relevant physics is often out of equilibrium offers a golden opportunity for holography to make a unique impact on cosmology and astrophysics. I will illustrate this through the dynamics of first-order phase transitions in the early Universe and in neutron star mergers. If time...
Go to contribution page -
Shohei Okawa (ICCUB)07/02/2023, 14:55
Thermal relic of massive stable particles, which are often called Weakly Interacting Massive Particles (WIMPs), has been one of the most fascinating candidates for cosmological dark matter (DM). WIMP DM can be tested directly and indirectly at terrestrial experiments, namely high-energy colliders, direct detection with elastic DM-nucleon scattering and indirect detection with extra cosmic-ray...
Go to contribution page -
Nadia Blagorodnova (Univeristat de Barcelona)07/02/2023, 15:20
Common Envelope Evolution (CEE) is a critical phase in the evolution of binary stars. It is required to shrink the orbits of stars born in pairs towards much tighter configurations, with final orbital periods of days, hours, or even minutes. Many high-energy astrophysical phenomena are created this way: type Ia supernovae, X-ray binaries, or gravitational wave sources among others....
Go to contribution page -
07/02/2023, 16:10
Winter Meeting Concerto
Go to contribution page -
Eduard Masana (Institut de Ciències del Cosmos (ICCUB-IEEC))07/02/2023, 16:25
Gaia4Sustainability is a Proof-of-Concept project granted by the Ministerio de Ciencia e Innovación in the 2021 call. The project aims to develop a robust, reliable, and straightforward framework for estimating the natural brightness of the sky. High quality photometry provided by the ESA Gaia satellite allows the computation of the contribution of the integrated star light to the sky...
Go to contribution page -
Pablo Bueno (Universitat de Barcelona)07/02/2023, 16:50
Growing evidence suggests that vacuum entanglement entropy (EE) may provide a universal description of QFT (in general dimensions), alternative to correlation functions. In this talk I will review the set of known axioms satisfied by EE in QFT and some of its successes in the direction of uniquely characterising the different models. Then, I will argue that such set of axioms is at present...
Go to contribution page -
Antonio Esteban Niemela (Universitat de Barcelona)07/02/2023, 17:15
During solar maximum, the frequency of CMEs being expelled from the Sun is in the order of a few events per day. If an event is capable of driving a shock strong enough to accelerate particles, then we might be able to register a gradual SEP event at Earth’s location. But what happens when we have a highly disturbed interplanetary medium at the time of the SEP event? How do preceding CMEs...
Go to contribution page
Choose timezone
Your profile timezone: