Seminar: ‘The Hunt for Multiple Axions’
2026-07-09 15:00 - 16:00 (Europe/Madrid) | IFT Seminar Room/Red Room, Instituto de Física Teórica (IFT) -C. Nicolás Cabrera, 13-15, Fuencarral-El Pardo, Madrid, 28049,, Spain
Title: ‘The Hunt for Multiple Axions’
Speaker: Arturo de Giorgi (University of Durham).
Venue&Time: Red Room / 15:00
Abstract: Axions and axion-like particles may arise in Nature as a spectrum rather than as a single field. Such a scenario naturally emerges in string-inspired constructions, as well as in reasonably simple bottom-up extensions of single axion models. In such multi-axion scenarios, new signal features arise, and recasting of existing experimental bounds from single-axion constraints becomes generally non-trivial. This motivates a closer look at how laboratory axion searches are impacted when multiple states contribute. In this talk, I will first briefly introduce bulk axions in extra dimensions as a concrete framework that naturally generates multiple modes, and highlight some of the phenomenological subtleties that follow. I will then present general results for multi-axions–photon oscillations, showing how coherence and interference can either enhance or suppress signals, with direct implications for light-shining-through-a-wall experiments and beyond.

Pro(v/b)ing the Swampland
2026-09-01 - 2026-09-03 | IFT Auditorium, Instituto de Física Teórica (IFT) - C. Nicolás Cabrera, 13-15, Fuencarral-El Pardo, Madrid, Madrid, 28049,, Spain
The workshop Pro(v/b)ing the Swampland will take place from September 1 to 3, 2026, at the Instituto de Física Teórica IFT UAM-CSIC in Madrid, Spain.
The aim of the workshop is to bring together leading experts in string compactifications, the Swampland programme, quantum field theory, conformal field theory, scattering amplitudes and other techniques that can be used to probe the imprint of quantum gravity at low energies.
The meeting will explore which Swampland conjectures and quantum-gravity constraints may be amenable to general proofs in frameworks such as holography or the bootstrap, and will discuss possible future directions for Swampland research.
The workshop will be held exclusively in person. Participants interested in attending must register through the official website.
Organizers:

Markus Dierigl
Irene Valenzuela
Luis Ibáñez
Matteo Lotito
Fernando Marchesano
Miguel Montero
Ángel Uranga

Administrative support: Rosa Sánchez Puga
Confirmed speakers:

Julio Parra Martínez
Sanjay Raman
Amineh Mohseni
José Calderón Infante
Brando Bellazzini
Ivano Basile
Matilda Delgado
Ben Heidenreich
Lucía Gómez Córdova
Ignacio Ruiz García
Thomas Van Riet
Elli Pomoni
Jonathan Heckman
Gabriele Di Ubaldo
Houri Christina Tarazi
Grant Remmen
Luca Martucci

More information and registration:Pro(v/b)ing the Swampland official website

Seminar by Damir Becirevic
2026-09-14 15:00 - 16:00 | IFT Seminar Room/Red Room, Instituto de Física Teórica (IFT) -C. Nicolás Cabrera, 13-15, Fuencarral-El Pardo, Madrid, 28049,, Spain
TBA

IFT Colloquium by Mark Srednicki (UC Santa Barbara)
2026-10-15 15:00 - 16:00

Seminar by Mark Srednicki
2026-10-19 15:00 - 16:00 | IFT Seminar Room/Red Room, Instituto de Física Teórica (IFT) -C. Nicolás Cabrera, 13-15, Fuencarral-El Pardo, Madrid, 28049,, Spain
