Tomi S. Koivisto

Tomi S. Koivisto is a theoretical physicist and cosmologist holding a 2006 PhD from the University of Helsinki under Hannu Kurki-Suonio. He is currently active at the Institute of Physics, University of Tartu (Estonia), and the National Institute of Chemical Physics and Biophysics (NICPB) in Tallinn. Earlier he was also affiliated with the Helsinki Institute of Physics.

Research Focus:

• Modified theories of gravity beyond General Relativity, including teleparallel, metric-affine, and Lorentz-gauge formulations.
• Cosmological applications: dark energy, dark matter, cosmic acceleration, and observational tensions.
• Black-hole physics and gravitational waves within extended gravity frameworks.

His publication record (≈ 143 papers, 2009-2025) reveals a steady flow of highly-cited works in JHEP, Phys. Rev. D, JCAP, and Universe, often co-authored with José Beltrán-Jiménez, Manuel Hohmann, Luca Marzola, Tom Złośnik, and others.

Articles Trend: Recent papers explore Spin(4) gauge-theoretic unification of gravity and matter, ghost-free symmetric teleparallel models, relativistic viscous fluids, and black-hole solutions in Lorentz-gauge theory—showing a shift toward geometrically richer, observationally testable extensions of gravity.

Scientific Awards & Recognition: None explicitly reported in the supplied texts.

Advising & Grants: No specific student names or funded-grant details are provided in the supplied material.

Laboratories & Teams: Works within the gravity and cosmology groups at Tartu and NICPB; participates in international collaborations such as the CosmoVerse and CANTATA networks.