Contact
Name
Isabel Oldengott

Position
Former member
Projects
Research directions:
Cosmology
Particle Physics

Active projects
Neutrinos in the Early Universe
Marco Drewes, Yuanzhen Li

We study the production and interactions of neutrinos in the primordial plasma from first principles of quantum field theory. This includes Standard Model computations such as QED corrections to Neff as well as constraints on new neutrinos species from cosmology and astrophysics.
Publications in IRMP
All my publications on Inspire

Number of publications as IRMP member: 6
Last 5 publications

2026

IRMP-CP3-26-30: Consistent treatment of flavour-specific neutrino self-interactions in cosmology
Barenboim, Gabriela and Drewes, Marco and Oldengott, Isabel M.

[Abstract] [PDF]
23 pages, 4 figures
Refereed paper. September 15.

2023

IRMP-CP3-23-52: Sphaleron freeze-in baryogenesis with gravitational waves from the QCD transition
Gao, Fei and Harz, Julia and Hati, Chandan and Lu, Yi and Oldengott, Isabel M. and White, Graham

[Abstract] [PDF] [Journal] [Dial]
Submitted to PRL
Refereed paper. October 2.
IRMP-CP3-23-23: Local clustering of relic neutrinos with kinetic field theory
Holm, Emil Brinch and Oldengott, Isabel M. and Zentarra, Stefan

[Abstract] [PDF] [Journal] [Dial]
Refereed paper. May 24.
IRMP-CP3-23-17: LiteBIRD and CMB-S4 Sensitivities to Reheating in Plateau Models of Inflation
Drewes, Marco and Ming, Lei and Oldengott, Isabel

[Abstract] [PDF] [Journal] [Dial]
46 pages plus appendices, 43 figures
Refereed paper. March 24.
IRMP-CP3-23-01: Weaker yet again: mass spectrum-consistent cosmological constraints on the neutrino lifetime
Chen, Joe Zhiyu and Oldengott, Isabel M. and Pierobon, Giovanni and Wong, Yvonne Y. Y.

[Abstract] [PDF] [Journal] [Dial]
Refereed paper. January 25.

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