Zobrazeno 1 - 10
of 22 222
pro vyhledávání: '"A Salo"'
In this article we calculate the reheating temperature in the cosmological scenarios where heavy scalar particles are gravitationally produced, due to a conformally coupled interaction between a massive scalar quantum field and the Ricci scalar, duri
Externí odkaz:
http://arxiv.org/abs/2411.01671
Geologic CO$_2$ storage is an important strategy for reducing greenhouse gas emissions to the atmosphere and mitigating climate change. In this process, coupling between mechanical deformation and fluid flow in fault zones is a key determinant of fau
Externí odkaz:
http://arxiv.org/abs/2411.08039
The fixed angle inverse scattering problem for a velocity consists in determining a sound speed, or a Riemannian metric up to diffeomorphism, from measurements obtained by probing the medium with a single plane wave. This is a formally determined inv
Externí odkaz:
http://arxiv.org/abs/2410.06864
Autor:
Salo, Ville, Schabanel, Juliette
In this paper, we study a reversible process (more precisely, a groupoid/group action) resembling the classical 15-puzzle, where the legal moves are to ``move the unique hole inside a translate of a shape $S$''. Such a process can be defined for any
Externí odkaz:
http://arxiv.org/abs/2409.19360
We study the Lorentzian Calder\'on problem, where the objective is to determine a globally hyperbolic Lorentzian metric up to a boundary fixing diffeomorphism from boundary measurements given by the hyperbolic Dirichlet-to-Neumann map. This problem i
Externí odkaz:
http://arxiv.org/abs/2409.18604
The ionization of diffuse gas located far above the energetic midplane OB stars poses a challenge to the commonly accepted notion that radiation from OB stars is the primary ionization source for gas in galaxies. We investigated the sources of ionizi
Externí odkaz:
http://arxiv.org/abs/2409.16062
Autor:
Bartholdi, Laurent, Salo, Ville
We construct a finitely generated group which is not virtually free, yet has decidable snake tiling problem. This shows that either a long-standing conjecture by Ballier and Stein (the characterization of groups with decidable domino problem as those
Externí odkaz:
http://arxiv.org/abs/2409.14525
Autor:
Salo, Ville
An avoshift is a subshift where for each set $C$ from a suitable family of subsets of the shift group, the set of all possible valid extensions of a globally valid pattern on $C$ to the identity element is determined by a bounded subpattern. This pro
Externí odkaz:
http://arxiv.org/abs/2408.09711
Autor:
Salo, Ville
The question of existence of nonexpansive chaotic almost minimal (CAM) systems, and the existence of CAM systems on every residually finite group, were raised in a recent paper of Van Cyr, Bryna Kra and Scott Schmieding. We construct nonexpansive CAM
Externí odkaz:
http://arxiv.org/abs/2408.03052
Autor:
Saló, Llibert Aresté
This thesis focuses on the application of numerical relativity methods to the solutions of problems in strong gravity. Our goal is the study of mergers of compact objects in the strong field regime where non-linear dynamics manifest and deviations fr
Externí odkaz:
http://arxiv.org/abs/2408.00044