Elastic thick shells in general relativity

Quark-gluon plasma shells in general relativity

The spherically symmetric thin shells of the quark-gluon plasma are considered within the framework of general relativity and bag model. The equation of state for two-dimensional plasma is suggested, and its features are discussed. The exact equations of motion of the quark-gluon plasma shells are obtained. Also we calculate the parameters of the equilibrium configurations, including the condit...

Effective Action and Thermodynamics of Radiating Shells in General Relativity

An effective action is obtained for the area and mass aspect of a thin shell of radiating selfgravitating matter. On following a mini-superspace approach, the geometry of the embedding space-time is not dynamical but fixed to be either Minkowski or Schwarzschild inside the shell and Vaidya in the external space filled with radiation. The Euler-Lagrange equations of motion are discussed and show...

Barotropic thin shells with linear EOS as models of stars and circumstellar shells in general relativity

The spherically symmetric thin shells of the barotropic fluids with the linear equation of state are considered within the frameworks of general relativity. We study several aspects of the shells as completely relativistic models of stars, first of all the neutron stars and white dwarfs, and circumstellar shells. The exact equations of motion of the shells are obtained. Also we calculate the pa...

Local Symmetry Group in the General Theory of Elastic Shells

Elastic platonic shells.

On microscopic scales, the crystallinity of flexible tethered or cross-linked membranes determines their mechanical response. We show that by controlling the type, number, and distribution of defects on a spherical elastic shell, it is possible to direct the morphology of these structures. Our numerical simulations show that by deflating a crystalline shell with defects, we can create elastic s...