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pro vyhledávání: '"Koivisto, P A"'
A well-known result of Shalom says that lattices in SO$(n,1)$ are $L^p$ measure equivalent for all $p
Externí odkaz:
http://arxiv.org/abs/2411.10250
Akademický článek
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Autor:
Koivisto, Tomi S., Zheng, Luxi
Black hole solutions are explored in the Lorentz gauge theory of gravity. The fields of the theory are the gauge potential in the adjoint and a scalar in the fundamental representation of the Lorentz group, a metric tensor then emerging as a composit
Externí odkaz:
http://arxiv.org/abs/2408.10100
Autor:
Linda Haapajärvi
Publikováno v:
Nordic Journal of Migration Research, Vol 11, Iss 3 (2021)
Externí odkaz:
https://doaj.org/article/72b95c5f66b549c8872a727c683daba9
Autor:
Bello-Morales, Antonio G., Jiménez, Jose Beltrán, Cano, Alejandro Jiménez, Maroto, Antonio L., Koivisto, Tomi S.
Theories formulated in the arena of teleparallel geometries are generically plagued by ghost-like instabilities or other pathologies that are ultimately caused by the breaking of some symmetries. In this work, we construct a class of ghost-free theor
Externí odkaz:
http://arxiv.org/abs/2406.19355
Motivated by cosmological applications for interacting matters, an extension of the action functional for relativistic fluids is proposed to incorporate the physics of non-adiabatic processes and chemical reactions. The former are characterised by en
Externí odkaz:
http://arxiv.org/abs/2406.01412
Autor:
KOIKKALAINEN, PETRI
Publikováno v:
Politiikka; 2019, Vol. 61 Issue 3, p192-222, 31p
Autor:
Iosifidis, Damianos, Koivisto, Tomi S.
We explore a new action formulation of hyperfluids, fluids with intrinsic hypermomentum. Brown's Lagrangian for a relativistic perfect fluid is generalised by incorporating the degrees of freedom encoded in the hypermomentum tensor, namely by includi
Externí odkaz:
http://arxiv.org/abs/2312.06780
A novel first order action principle has been proposed as the possible foundation for a more fundamental theory of General Relativity and the Standard Model. It is shown in this article that the proposal consistently incorporates gravity and matter f
Externí odkaz:
http://arxiv.org/abs/2311.07464
The intrinsic presence of ghosts in the symmetric teleparallel framework is elucidated. We illustrate our general arguments in $f(\mathbb{Q})$ theories by studying perturbations in the three inequivalent spatially flat cosmologies. Two of these branc
Externí odkaz:
http://arxiv.org/abs/2311.04201