Friday, May 25, 2012

1205.5325 (Eugenio Bianchi et al.)

Horizon energy as the boost boundary term in general relativity and loop
gravity
   [PDF]

Eugenio Bianchi, Wolfgang Wieland
We show that the near-horizon energy introduced by Frodden, Ghosh and Perez arises from the action for general relativity as a horizon boundary term. Spin foam variables are used in the analysis. The result provides a derivation of the horizon boost Hamiltonian introduced by one of us to define the dynamics of the horizon degrees of freedom, and shows that loop gravity provides a realization of the horizon Schrodinger equation proposed by Carlip and Teitelboim.
View original: http://arxiv.org/abs/1205.5325

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