Experiments with ultracold quantum gases of atoms and molecules constitute a powerful platform to explore the physics of quantum many-body systems thanks to the rich and versatile toolbox. For instance, one can create arbitrary potential energy profiles for quantum particles, tune the strength of interactions, and address individual particles for both control and observation. This allows one to simulate models of quantum systems of different origins, which constitutes the approach dubbed quantum simulations. 

In the first part of my talk, I will present the basic experimental approaches in ultracold quantum gasses. This includes some basic techniques of laser cooling, trapping, and observation of atoms.

In the second part of my talk, I will present an example of research on such a platform. Namely, I will talk about our recent work in which we have exploited the interplay of spin-orbit coupling and tunable interactions in the bose-einstein condensate (BEC) of potassium to observe and study the supersolid stripe phase. This phase is characterized by spontaneously breaking both gauge and translation symmetry, and it combines the frictionless flow of a superfluid and the crystalline structure of a solid. Particularly, I will show the first in situ observation of such a phase in spin-orbit coupled BEC and I will also present the collective oscillations which reveal the crystalline nature of the supersolid stripe phase. 

Quantum entanglement represents correlations between separate subsystems that are classically forbidden. It offers a novel perspective for probing the physical properties of atomic nuclei.

This talk first discusses the generation of spin entanglement in elastic scattering between unpolarized protons. Beyond the well-established low-energy region dominated by spin-singlet entanglement, a new kinematic region is identified to support near-maximal spin entanglement in the final state. This region, occurring at intermediate energies (~150 MeV), corresponds to a highly pure spin-triplet configuration and has remained unrecognized by standard analyses of proton-proton elastic scattering for decades.

The second part addresses the experimental possibility of measuring spin entanglement between two protons emitted from 6Be, the lightest two-proton emitter in nature. I will detail the reconstruction of this entangled state via quantum state tomography, leveraging specific spin-correlation observables. The potential for simulating such measurements on quantum platforms will also be discussed. 

Bio: Dong Bai is an associate professor at Hohai University. He got his B.S. degree at Nanjing University and his Ph.D. degree at Institute of Theoretical Physics, Chinese Academy of Sciences. He worked as a postdoc at Nanjing University and Tongji University prior to his current appointment. His primary research interests are nuclear entanglement and nuclear clustering.

Supervisor: Thomas Dent

The school aims to attract graduate students as well as young postdocs interested in the areas of de Sitter physics, theoretical cosmology, holography, scattering amplitudes, open systems, and disordered systems. The primary goal is to explore the intersections among these topics, which have gained increasing attention in recent years. 

The school is structured into four sets of blackboard lectures, complemented by discussion sessions over the course of two weeks

Lecturers

Dionysios Anninos (King\\\'s College London)

Tarek Anous (Queen Mary, U. of London)

Thomas Colas (DAMTP, Cambridge U.)

Andrew McLeod (Higgs Center, Edinburgh U.)

with a public lecture, titled Un paseo por el espacio-tiempo, by Dionyisios Anninos, and the series Dende o universo ata o rural of 5 educational activities for a general audience, by Martí Berenguer Mimó, Rafa Carrasco Carmona, Lucas Vicente García-Consuegra, Silvia Plá García. 

More info: https://indico.sns.it/event/91/overview

Supervisors: Xabier Cid Vidal, Diego Martínez Santos

A major challenge in modern particle physics is the search for signals beyond the Standard Model (SM), our current theory of the particle world. A series of recent experimental results, collectively known as the "b-anomalies" (named after the quark involved in these decays), have shown deviations from their theoretical predictions within the framework of the SM, indicating the potential presence of new laws of physics.

To investigate these anomalies, two approaches are being pursued. The first approach aims to improve the precision of theoretical predictions and experimental measurements for already known phenomena, while the second approach seeks to identify new decay channels that are sensitive to the same signals of new physics.

This talk focuses on the second approach by studying the decay of a $B_s$ meson into two muons and a photon. A primary task presented here is a re-appraisal of the so-called "b-anomalies", followed by the description of the $B_s to mu\\\\\\\\mu gamma$ observable as a potential probe of these anomalies. However, measuring this decay poses a significant challenge due to the low energy of the photon. Therefore, a preliminary study of a method of partial reconstruction of the final state based solely on the two muons is presented at the LHCb experiment at the Large Hadron Collider (LHC) at CERN.

The dynamics of quantum many-body systems is one of the traditionally most challenging problems to study for classical simulators. Recently, however, the development of novel methodologies based on the concept of temporal entanglement has opened the way to a series of new results, allowing to access dynamical properties of quantum systems with efficient classical algorithms, such as transverse contraction methods for tensor networks. 

In this talk, I will review the ideas behind these novel methods, and the properties of the generalized temporal entanglement which can be introduced in this context. In particular, I will discuss its relation to the computational complexity of the time evolution of expectation values of quantum many-body systems, and show how conformal field theory can provide predictions for its scaling close to criticality in different setups such as return probabilities. If time allows, I will also discuss a possible way to measure this novel type of entanglement using currently available technologies.

Link to Indico: https://indico.global/event/14958/

O IGFAE e a Fundación Cidade da Cultura de Galicia únense para convocar as Residencias ArtLab IGFAE, unha iniciativa que ten o obxectivo de seleccionar un proxecto artístico relacionado coa investigación realizada no IGFAE, explorando formas alternativas de comunicación coa arte e a sociedade.

As Residencias ArtLab IGFAE están abertas a persoas ou colectivos relacionados co contexto da arte contemporánea galega, en todo tipo de medios artísticos (pintura, escultura, fotografía, artes de acción, arte obxectual, arte sonora, arte en rede, arte interactiva, arte participativa, entre outras). As propostas deberán abrirse ás novas perspectivas no campo da arte, da ciencia, da tecnoloxía e da sociedade, ben a través dunha obra totalmente nova ou da ampliación dunha obra en curso.

O salón de actos do IGFAE acolle o acto de presentación, no que participarán o secretario xeral de Cultura da Xunta de Galicia, Anxo Lorenzo; a directora xerente da Fundación Cidade da Cultura de Galicia; Ana Isabel Vázquez; a vicerreitora de Estudantes e Cultura da USC, Pilar Murias; e o director do IGFAE, Carlos Salgado.

Directors: Enrique Zas Arregui, Jaime Álvarez Muñiz