The concept of turnaround surface in an accelerating universe is generalized to arbitrarily large deviations from spherical symmetry, to close the gap between the idealized theoretical literature and the real world observed by astronomers. As an analytical application, the characterization of turnaround surface is applied to small deviations from spherical symmetry, recovering a previous result while extending it to scalar-tensor gravity.
Giusti, A., Faraoni, V. (2021). Turnaround physics beyond spherical symmetry. PHYSICAL REVIEW D, 103(4), 1-10 [10.1103/physrevd.103.044049].
Turnaround physics beyond spherical symmetry
Andrea Giusti;
2021
Abstract
The concept of turnaround surface in an accelerating universe is generalized to arbitrarily large deviations from spherical symmetry, to close the gap between the idealized theoretical literature and the real world observed by astronomers. As an analytical application, the characterization of turnaround surface is applied to small deviations from spherical symmetry, recovering a previous result while extending it to scalar-tensor gravity.File in questo prodotto:
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