Enhancing 0ν2β Detection with the CROSS Demonstrator

• David Cintas (IJCLab, Saclay)

Room: Sala de Grados

Geometric Flavours of Quantum Field Theory: Applications to Cosmology

• David Martínez

Room: Sala de Grados

Machine Learning Developments for 3D Muon Tomography of a Nuclear Reactor

• Héctor Gómez (CEA, Saclay)

Room: Sala de Grados

Hunting for Dark Matter with ANAIS-112: Latest Results and ongoing Work

• Jaime Apilluelo Allué

Room: Seminario de Física Atómica, Nuclear y Molecular

A Cosmic Dance: How Supermassive Black Holes and their Host Galaxies are tangled up

• Jacobo Asorey Barreiro (CAPA, Universidad de Zaragoza)

Room: Seminario de Física Atómica, Nuclear y Molecular In a recent research, just published in Nature Astronomy, we have found a connection between the supermassive black hole (SMBH) and the galaxy that host them, despite the huge difference in scale between both astrophysical objects. Using Very Long Baseline Interferometry (VLBI) and optical survey images, we found a weak but significant alignment between the direction of the jets emitted by the SMBHs and the shape of the galaxy. In particular, we found a consistent alignment between the jet and the galaxy's minor axis. The implications of this study link the black hole, despite its small size compared relative to the host galaxy, with the cosmic environment. Finally, the finding suggests that the black hole may play a significant role in shaping the galaxy and some sort of co-evolution, providing new insight into galaxy evolution and rising new questions, entangled with recent observations by the James Webb Space Telescope on early quasars.

Spectrum of Global Strings and the Axion Dark Matter Mass

• Mathieu Kaltschmidt (Universidad de Zaragoza)

Room: Seminario de Física Atómica, Nuclear y Molecular Cold dark matter axions produced in the post-inflationary scenario serve as clear targets for their experimental detection, since it is in principle possible to give a sharp prediction for their mass once we understand precisely how they are produced from the decay of global cosmic strings in the early Universe. We performed a dedicated analysis of the spectrum of axions radiated from strings based on large scale numerical simulations of the cosmological evolution of the Peccei-Quinn field on a static lattice. It turns out that there are several systematic effects that have been overlooked in previous works, such as the dependence on the initial conditions, contaminations due to oscillations in the spectrum, and discretisation effects, some of which could explain the discrepancy in the literature. We confirmed the trend that the spectral index $q$ of the axion emission spectrum increases with the string tension, but did not find a clear evidence of whether it continues to increase or saturates to a constant at larger values of the string tension due to the severe discretisation effects. Taking this uncertainty into account and performing the extrapolation to realistic string tensions with a simple power law assumption on the spectrum, we found that the dark matter mass is predicted in the range of $m_a \approx 95-450 \mu$eV.

Phenomenology of Theories of Gravitation beyond General Relativity

• Miguel Pardina (CAPA, Universidad de Zaragoza)

Room: Seminario de Física Atómica, Nuclear y Molecular

Dark Matter Detection with a Superconducting Qubit in the DarkQuantum Project

• Yikun Gu (CAPA, Universidad de Zaragoza)

Room: Seminario de Física Atómica, Nuclear y Molecular

Searching for New Physics in Semileptonic B Decays using Lattice QCD

• Alejandro Vaquero (CAPA, Universidad de Zaragoza)

Room: Seminario de Física Atómica, Nuclear y Molecular

Neutron-Capture Experiments and the Synthesis of Heavy Elements

• Jorge Lerendegui (IFIC, Valencia)

Room: Seminario de Física Atómica, Nuclear y Molecular

Primordial Correlators: Opening a Window into the very early Universe

• Carlos Duaso Pueyo (Scuola Normale Superiore, Pisa)

Room: Seminario de Física Atómica, Nuclear y Molecular

Doubly Special Relativity as a Nonlocal Quantum Field Theory

• Javier Relancio Martínez (Universidad de Zaragoza)

Room: Seminario de Física Atómica, Nuclear y Molecular