Mr. Mattia Arundine
I was born in Agropoli, Italy, on 24 June 2000. I obtained my bachelor’s and master’s degrees in Physics from the University of Pisa and the Scuola Normale Superiore in 2022 and 2024, respectively. My bachelor’s thesis focused on a WKB approach to the quasinormal modes of Schwarzschild black holes, under the supervision of Prof. Enrico Trincherini. My master’s thesis explored the complex double-scaled Sachdev–Ye–Kitaev (DSSYK) model and its connections to de Sitter holography, under the supervision of Prof. Guilherme L. Pimentel.
In 2023, I was a summer student at DESY under the supervision of Dr. Hyungjin Kim, where I investigated the effects of a cloud of axion-like particles produced through superradiance on the inspiral of a neutron star–black hole binary.
I am currently a PhD student in Prof. Daniel Baumann’s group at the University of Amsterdam, with occasional research visits to the Leung Center for Cosmology and Particle Astrophysics in Taipei and the University of Cambridge. My primary research focus is on understanding the properties of the recently developed Cosmological Grassmannian and exploring how it can help address both longstanding and new questions in quantum field theory in four-dimensional (Anti-)de Sitter spacetime.
Research
Cosmological Correlators, (Anti-)de Sitter, Quantum Field Theory, Conformal Field Theory, (A)dS/CFT, Positive Geometry, Twistor Theory
Publications
- The DSSYK Model: Charge and Holography - https://doi.org/10.48550/arXiv.2512.21366
- The Cosmological Grassmannian - https://doi.org/10.48550/arXiv.2602.07117
- Cosmological Collider in the Grassmannian - https://doi.org/10.48550/arXiv.2605.21581
- Positive Geometry of Yang–Mills Correlators - https://doi.org/10.48550/arXiv.2608.27594
