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Publications Influence

Vector two-point functions in maximally symmetric spaces

- B. Allen, T. Jacobson
- Physics
- 2 June 1986

We obtain massive and massless vector two-point functions in maximally symmetric spaces (and vacua) of any number of dimensions. These include de Sitter space and anti-de Sitter space, and their… Expand

270 30

Entanglement Equilibrium and the Einstein Equation.

- T. Jacobson
- Physics, Medicine
- Physical review letters
- 18 May 2015

A link between the semiclassical Einstein equation and a maximal vacuum entanglement hypothesis is established. The hypothesis asserts that entanglement entropy in small geodesic balls is maximized… Expand

156 20- PDF

Gravity with a dynamical preferred frame

- T. Jacobson, D. Mattingly
- Physics
- 14 July 2000

We study a generally covariant model in which local Lorentz invariance is broken "spontaneously" by a dynamical unit timelike vector field $u^a$---the "aether". Such a model makes it possible to… Expand

536 19- PDF

Einstein-aether gravity: a status report

- T. Jacobson
- Physics
- 10 January 2008

This paper reviews the theory, phenomenology, and observational constraints on the coupling parameters of Einstein-aether gravity, i.e. General Relativity coupled to a dynamical unit timelike vector… Expand

193 19- PDF

Black holes in Einstein-aether and Hořava-Lifshitz gravity

- E. Barausse, T. Jacobson, T. Sotiriou
- Physics
- 14 April 2011

We study spherical black hole solutions in Einstein-aether theory, a Lorentz-violating gravitational theory consisting of general relativity with a dynamical unit timelike vector (the ``aether'')… Expand

141 10- PDF

Black hole entropy and Lorentz-diffeomorphism Noether charge

- T. Jacobson, A. Mohd
- Physics
- 4 July 2015

We show that, in the first or second order orthonormal frame formalism, black hole entropy is the horizon Noether charge for a combination of diffeomorphism and local Lorentz symmetry involving the… Expand

54 10- PDF

A new characterization of half-flat solutions to Einstein's equation

- A. Ashtekar, T. Jacobson, L. Smolin
- Physics
- 1 December 1988

AbstractA 3+1 formulation of complex Einstein's equation is first obtained on a real 4-manifoldM, topologically σ×R, where σ is an arbitrary 3-manifold. The resulting constraint and evolution… Expand

87 9

Lorentz violation at high energy: Concepts, phenomena, and astrophysical constraints

- T. Jacobson, S. Liberati, D. Mattingly
- Physics
- 12 May 2005

Abstract We consider here the possibility of quantum gravity induced violation of Lorentz symmetry (LV). Even if suppressed by the inverse Planck mass such LV can be tested by current experiments and… Expand

312 8- PDF

Introduction to Quantum Fields in Curved Spacetime and the Hawking Effect

- T. Jacobson
- Physics
- 14 August 2003

These notes introduce the subject of quantum field theory in curved spacetime and some of its applications and the questions they raise. Topics include particle creation in time-dependent metrics,… Expand

142 8- PDF

Extended Horava gravity and Einstein-aether theory

- T. Jacobson
- Physics
- 27 January 2010

Einstein-aether theory is general relativity coupled to a dynamical, unit timelike vector. If this vector is restricted in the action to be hypersurface orthogonal, the theory is identical to the IR… Expand

65 8- PDF