1-"L´avaluació de les competències en assignatures de Física"

Sr.Joan Josep Sunyol (UdG)

2-"Les competències en els graus d´enginyeria: e-Portfolio"

Francesc J. Robert (UPC)

3-"Acreditació de competències transversals en els graus"

Dr.Albert Cornet (UB)

4-"Avaluació de les competències a la Facultat de Física"

Dra. Esther Pascual (Vicedegana, Facultat de Física)

The collision of two gravitationally interacting, ultra-relativistic, extended sources is being examined. This investigation classifies the transverse distributions that are collided according to whether one or more apparent horizons may or may not be formed in a flat background. The study extends to the thermodynamical properties of the objects that are created, which exhibit a universal behavior in their entropy. It suggests the elimination in observing black holes (BHs) at the LHC in the absence of extra dimensions while proposes novel mechanism of how extra dimensions could allow BHs creation at TeV scales.

The investigation is carried further to AdS5 backgrounds and makes connections with the implications for the quark-gluon plasma (QGP) formation in heavy ion collisions. The study shows that QGP is formed if and only if the (central collision) energy is sufficiently large compared to the transverse scale of the corresponding gauge theory colliding stress-tensor. Despite being in accordance with the current intuition and data, this is the first theoretical work that captures such a feature: QGP is formed only at high enough energies compared to ΛQCD, even for central processes. Incorporating weak coupling physics and in particular the Color Glass Condensate (CGC) model, a satisfactory fitting with the RHIC and the LHC data for multiplicities may be established.

Single molecule force spectroscopy is a powerful tool to measure the dynamics of individual bio-molecules. My talk will focus on several distinct results based on a common assay, pulling on single molecules using two different measurement platforms, optical tweezers and atomic force microscopy. First, we studied the dynamics of overstretching DNA and thereby provided insight into the mechanism of overstretching, a 16 year old controversy. Next, we studied the dynamics of a pair of canonical DNA intercalators and learned that binding/unbinding and intercalation/de-intercalation are distinct processes that can occur on very different time scales. By using a state of the art optically stabilized AFM, we studied the folding and unfolding of a model membrane protein. Finally, I will highlight a recent 10-fold improvement in force precision of AFM for biological application.

Schedule: 11:00-12:30

Dates: June 3, 5, 10, 12, 17.

Outline:

1. Motivation

2. Clifford algebras and spinors

3. Rarita-Schwinger field

4. Global supersymmetry

5. Tools of differential geometry

6. First and second order formulation of gravity

7. Gauging of Poincare algebra

8. Conformal approach to gravity

9. N=1 Global Supersymmetry in D=4

10. N=1 D=4 Supergravity

11. D=11 Supergravity

12. Superconformal approach to Supergravity

13. Killing spinor equations and SUGRA BPS solutions

Reference: "Supergravity" book, by Freedman & Van Proeyen.

Metal-organic framework (MOF) materials are crystalline phases containing both inorganic and organic structural elements. They may be dense or nanoporous, and span the full range of dimensionalities from 0-D (molecular) to 3-D. A fascinating feature of MOFs, compared with inorganic and organic materials, is the possibility of tuning and controlling properties due to infinite diverse structural and chemical variability. Since MOF materials can exhibit the functionality of both inorganic and organic materials, they have a diverse range of properties and show potential for applications in a number of areas. Nanoporous MOF materials are of interest for hydrogen storage and CO2 sequestration and shape-selective catalysis, and dense MOF phases have eye-catching properties in areas that have traditionally been dominated by inorganic materials, e.g. negative linear compressibility and multiferroic behavior. In this talk, I will discuss the unique mechanical properties of a family of dense metal-formate framework materials, which exhibit properties that classical inorganics and organics rarely have.