Citation

BibTex format

@article{Albertini:2024:10.1007/JHEP12(2024)204,
author = {Albertini, E and Kouszek, J and Wiseman, T},
doi = {10.1007/JHEP12(2024)204},
journal = {Journal of High Energy Physics},
title = {Dynamics of dRGT ghost-free massive gravity in spherical symmetry},
url = {http://dx.doi.org/10.1007/JHEP12(2024)204},
volume = {2024},
year = {2024}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - We focus on dRGT massive gravity in spherical symmetry in the limit of small graviton mass. Firstly we examine the minimal model. This does not exhibit a Vainshtein mechanism in spherical symmetry, but one may still ask what happens for spherical dynamics. We show that there are no regular time-dependent spherically symmetric solutions unless the matter has sufficiently large pressure. For matter that does not satisfy this, such as non-relativistic matter, any Cauchy slice of such a solution must necessarily have a point where the metric becomes singular. Only a weak assumption on the asymptotics is made. We then consider the next-to-minimal model. This has been argued to have a good Vainshtein mechanism in spherical symmetry, and hence be phenomenologically viable, provided the relative sign of the minimal and next-to-minimal mass terms is the same, and we restrict attention to this case. We find that regular behaviour requires the matter at the origin of symmetry to have positive pressure — in particular a massive scalar field fails to satisfy this condition. Furthermore it restricts non-relativistic matter so that the pressure is bounded from below in terms of the density and graviton mass in a manner that is at odds with a reasonable phenomenology. This suggests that realistic phenomenology will either require a resolution of singularities, or will require dynamics beyond the non-generic setting of spherical symmetry.
AU  - Albertini,E
AU  - Kouszek,J
AU  - Wiseman,T
DO  - 10.1007/JHEP12(2024)204
PY  - 2024///
TI  - Dynamics of dRGT ghost-free massive gravity in spherical symmetry
T2  - Journal of High Energy Physics
UR  - http://dx.doi.org/10.1007/JHEP12(2024)204
VL  - 2024
ER  -
Download

Note to staff:  Adding new publications to a research group

  1. Log in to Symplectic.
  2. Click on Menu > Create Links
  3. Choose what you want to create links between – in this case ‘Publications’ and ‘Organisational structures’.
  4. Choose the organisational structure (research group) into which you want to link the publications and check the box next to it.
  5. Now check the box of any publication you want to add to that group. You can use the filters to find what you want and select multiple publications if necessary. 
  6. Scroll to the bottom and click the blue ‘Create new link’ button to link them.
  7. The publications will be added to the group, and will be displayed on the group publications feed within 24 hours (it is not immediate).

Any problems, talk to Tim Evans or the Faculty Web Team.