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El límit per poder anunciar en paper seminaris i conferències en els ascensors és el divendres a les 12 hores de la setmana anterior. Amb posterioritat a aquesta data el seminari o conferència quedarà només recollit al web de la Facultat. Aleshores la publicitació en paper serà responsabilitat dels organitzadors.



Facultat de Física, Dijous 01 de Juny de 2017, a les 14:00h

Seminari del Dep. de Física Quàntica i Astrofísica

Títol: A Mystery of Black Hole Entropy
Conferenciant: Alessio Marrani (\"Enrico Fermi\" Center, Roma, & INFN & University of Padova, IT)
Abstract:

I will present evidence for a novel, intrinsically non-linear symmetry of the black hole entropy, named Freudenthal duality. It is extremely general, concerning any theory of Einstein gravity coupled to vector and scalar fields. Its origin and interpretation in string theory and M-theory is still mysterious.

Lloc: Aula 507
Contacte: hofer@fqa.ub.edu
Web:

Facultat de Física, Dijous 01 de Juny de 2017, a les 12:00h

Seminari del Dep. de Física de la Matèria Condensada

Títol: Nanoparticles impact stem cells: from membrane interaction/uptake to biological effects and way back
Conferenciant: Claudia Giachino (Università di Torino)
Abstract:

We aimed at evaluating if the uptake of silica nanoparticles (SiO2-NPs) by human mesenchymal stem cells (hMSCs) could exert any functional effects that might ultimately impact on hMSC regenerative potential. Our findings so far provide evidence that SiO2-NPs do not only passively interact with hMSCs, but also actively engage in mediating biological effects, some of which might ultimately result in an augmented stem cell regenerative potential. The possibility that NP-induced modification of cell membrane mechanical behaviour might accompany these phenotypic changes will be discussed.

Lloc: Aula Seminari 3.20
Contacte: fritort@gmail.com
Web: http://ffn.ub.es/ritort/news-activities/

Facultat de Física, Divendres 02 de Juny de 2017, a les 12:00h

Seminari del Dep. de Física Quàntica i Astrofísica

Títol: Phases of strongly interacting matter from QCD to effective theories
Conferenciant: Claudia Ratti (University of Houston)
Abstract:

I will review what we currently know from lattice QCD simulations about the phase diagram of strongly interacting matter, including a connection to the chemical freeze-out in heavy-ion collisions. I will then expand the calculations to larger baryonic densities, using string theory methods which match the available QCD results. I will discuss the possible existence of a critical point and its relevance for the next generation colliders.

Lloc: Aula 507
Contacte: hofer@fqa.ub.edu
Web:

Facultat de Física, Dimecres 07 de Juny de 2017, a les 12:00h

Seminari de l'Institut de Ciències del Cosmos

Títol: An interferometric journey around massive stars: a decade of amazing results
Conferenciant: Anthony Meilland (Observatoire de la Côte d\'Azur)
Abstract:

Since the construction of modern facilities such as VLTI and CHARA, interferometry has become a key technique to probe massive stars and their often-complex circumstellar environments. In this seminar, I will briefly introduce the basics of this technique and its application to astrophysics. We will then start our journey around massive stars at the highest-possible angular resolution. I will show how interferometry can address various questions about massive stars through the characterisation of the geometry and kinematics of their stellar surface or environment. We\\\'ll talk about stellar formation, binarity, mass-loss, and rotation. Finally, we\\\'ll see how the latest generation of instruments which combine the power of interferometry and spectroscopy offers amazing spectro-imaging capabilities.

Lloc: Seminari d\'Astronomia i Meteorologia (Aula 724)
Contacte: mribo@ub.edu
Web:

Facultat de Física, Dijous 08 de Juny de 2017, a les 11:00h

Seminari del Dep. de Física de la Matèria Condensada

Títol: Self-organization and criticality in martensite
Conferenciant: Dr. Pierluigi Cesana, Institute of Mathematics for Industry, Kyushu University
Abstract:

A martensitic phase-transformation is a first-order diffusionless transition occurring in elastic crystals and characterized by an abrupt change of shape of the underlying crystal lattice. It is the basic activation mechanism for the Shape-Memory effect. In this talk we present a probabilistic model for the description of martensitic microstructure as an avalanche process. Our approach to the analysis of the model is based on an associated general branching random walk process. Comparisons are reported for numerical and analytical solutions and experimental observations.

Lloc: Aula Pere Pascual Planta 6
Contacte: eduard@fmc.ub.edu
Web: