# Item

ITEM ACTIONSEXPORT

Released

Journal Article

#### A global foliation of Einstein-Euler spacetimes with Gowdy-symmetry on T3

##### Fulltext (public)

1004.0427

(Preprint), 264KB

ARMA201_841.pdf

(Any fulltext), 305KB

##### Supplementary Material (public)

There is no public supplementary material available

##### Citation

LeFloch, P. G., & Rendall, A. D. (2011). A global foliation of Einstein-Euler spacetimes
with Gowdy-symmetry on T3.* Archive for Rational Mechanics and Analysis,* *201*(3),
841-870. Retrieved from http://arxiv.org/abs/1004.0427.

Cite as: http://hdl.handle.net/11858/00-001M-0000-000F-45EA-3

##### Abstract

We investigate the initial value problem for the Einstein-Euler equations of
general relativity under the assumption of Gowdy symmetry on T3, and we
construct matter spacetimes with low regularity. These spacetimes admit, both,
impulsive gravitational waves in the metric (for instance, Dirac mass curvature
singularities propagating at light speed) and shock waves in the fluid (i.e.,
discontinuities propagating at about the sound speed). Given an initial data
set, we establish the existence of a future development and we provide a global
foliation in terms of a globally and geometrically defined time-function,
closely related to the area of the orbits of the symmetry group. The main
difficulty lies in the low regularity assumed on the initial data set which
requires a distributional formulation of the Einstein-Euler equations.