My field of expertise lies somewhere between the cosmology of the early universe, gravitational wave physics, theoretical particle physics and statistics. Throughout the last years, I studied phase transitions in dark sectors, which could be observed as a stochastic gravitational wave background. I also did some pulsar timing array data analysis: Together with my colleagues we could show that secluded dark sector phase transitions cannot account for the recently announced gravitational wave background at nano-Hertz frequencies. In another project, we demonstrated how the signal could instead come from the merger of supermassive primordial black holes.

 

Publications

• Hunting WIMPs with LISA: Correlating dark matter and gravitational wave signals. Published in: JCAP 05 (2024) 065 • e-Print: 2311.06346 [astro-ph.CO]. Torsten Bringmann (Oslo U.), Tomás E. Gonzalo (KIT, Karlsruhe, TTP), Felix Kahlhoefer (KIT, Karlsruhe, TTP), Jonas Matuszak (KIT, Karlsruhe, TTP and RWTH Aachen U.), Carlo Tasillo (DESY) (Nov 10, 2023)

• Do pulsar timing arrays observe merging primordial black holes? e-Print: 2306.17836 [astro-ph.CO]. Paul Frederik Depta (Heidelberg, Max Planck Inst.), Kai Schmidt-Hoberg (DESY), Pedro Schwaller (Mainz U., Inst. Phys. and U. Mainz, PRISMA), Carlo Tasillo (DESY) (Jun 30, 2023)

• Does NANOGrav observe a dark sector phase transition? Published in: JCAP 11 (2023) 053 • e-Print: 2306.09411 [astro-ph.CO]. Torsten Bringmann (Oslo U.), Paul Frederik Depta (Heidelberg, Max Planck Inst.), Thomas Konstandin (DESY), Kai Schmidt-Hoberg (DESY), Carlo Tasillo (DESY) (Jun 15, 2023)

• Turn up the volume: listening to phase transitions in hot dark sectors. Published in: JCAP 02 (2022) 02, 014 • e-Print: 2109.06208 [astro-ph.CO]. Fatih Ertas (RWTH Aachen U.), Felix Kahlhoefer (RWTH Aachen U.), Carlo Tasillo (RWTH Aachen U.) (Sep 13, 2021)

Public code

• TransitionListener.

 

Talks

Invited Talks

• Seminar talk, December 2024, IPNP Institute, Charles University Prague, Czech Republic: Exploring the dark universe with gravitational wave backgrounds
• Seminar talk, June 2024, Karlsruhe Institute of Technology, Germany: Exploring new physikcs with pulsar timing arrays
• Seminar talk, March 2024, Oslo University, Norway: Exploring cosmological phase transitions with PTAs.
• Plenary talk as convener at the JENAS workshop, February 2024, Sapienza University, Rome, Italy: Gravitational wave cosmology.
• Seminar talk, October 2023, University of Illinois, Chicago, USA. Exploring new physics with PTAs.
• Seminar talk, October 2023, Fermilab, Batavia, Illinois, USA. Exploring new physics with PTAs.
• Seminar talk, June 2023, TU Dortmund University, Germany. How loud was the dark Big Bang?.
• Seminar talk, March 2023, Universidade Federal de Minas Gerais, Brazil. How loud was the dark Big Bang?.
• Seminar talk, January 2022, Carleton University, Ottawa, Canada: Turn up the volume – Listening to hot dark sector phase transitions.

Conference talks and posters

• HIGGS 2024 conference, November 2024, Uppsala University, Sweden. The (first) LISA miracle.
• DESY theory workshop 2024, September 2024, Hamburg, Germany. The (first) LISA miracle.
• Invisibles workshop 2024, July 2024, Bologna, Italy. Exploring new physics with pulsar timing arrays: Talk and Poster.
• Quarkonia meet dark matter, March 2024, TU Munich, Germany. Panel discussion and talk: Exploring cosmological phase transitions with PTAs.
• JENAS initiaive, February 2024, Sapienza, Rome, Italy. Exploring new physics with PTAs.
• ISAPP autumn school: Exploring the dark universe, November 2023, Texel, Netherlands. Do pulsar timing arrays observe a dark sector phase transition?.
• Kosmologietag Bielefeld, May 2022, Turn up the volume – Listening to hot dark sector phase transitions.
• DESY Theory Workshop, September 2021, DESY Hamburg: Turn up the volume – Listening to hot dark sector phase transitions.

 

Teaching

Tutoring

• Deutsche SchülerAkademie 2024, Wittgenstein, “Big Bang Maths – Die Mathematik des frühen Universums”: Two weeks with 5h/day lectures and coursework on cosmology and gravitational waves. Taught together with Simon Schwarz.
• Deutsche SchülerAkademie 2023, Torgelow, “Big Bang Maths – Die Mathematik des frühen Universums”: Two weeks with 5h/day lectures and coursework on cosmology and dark matter. Taught together with Simon Schwarz.
• Winter term 2018/19, Theoretical Physics IV (Statistical physics), RWTH Aachen University.
• Summer term 2018, Physics IV (Quantum mechanics), TU Dortmund University.
• Winter term 2017/18, Physics III (Analytical mechanics and optics), TU Dortmund University.
• Summer term 2017, Physics II (Electrodynamics and special relativity), TU Dortmund University.
• Winter term 2016/17, Physics I (Classical mechanics and thermodynamics), TU Dortmund University.

 

University requirements

PhD thesis

• PhD defense, October 2024, DESY Hamburg: Exploring the dark universe with gravitational wave backgrounds.
• PhD thesis, August 2024, DESY Hamburg: Exploring the dark universe with gravitational wave backgrounds.

Master thesis

• Master colloquium, June 2021, RWTH Aachen University: Listening to hot dark sector phase transiitons.
• Master thesis, May 2021, RWTH Aachen University: Listening to hot dark sector phase transiitons.

Coursework at Perugia University

• Talk on the proton stability in GUTs, October 2019, Università degli Studi di Perugia: Proton stability as a probe of grand unified theories.
• Talk on natural SUSY Higgs bosons, January 2020, Università degli Studi di Perugia: A natural SUSY Higgs near 125 GeV.

Bachelor thesis

• Bachelor colloquium, July 2018, TU Dortmund University: Freeze-In Production of sterile Neutrino Dark Matter.
• Bachelor thesis, July 2018, TU Dortmund University: Freeze-In Production of sterile Neutrino Dark Matter.