Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gravity from spontaneous Lorentz violation   We investigate a class of theories involving a symmetric two-tensor field in
Minkowski spacetime with a potential triggering spontaneous violation of
Lorentz symmetry. The resulting massless Nambu-Goldstone modes are shown to
obey the linearized Einstein equations in a fixed gauge. Imposing
self-consistent coupling to the energy-momentum tensor constrains the potential
for the Lorentz violation. The nonlinear theory generated from the
self-consistent bootstrap is an alternative theory of gravity, containing
kinetic and potential terms along with a matter coupling. At energies small
compared to the Planck scale, the theory contains general relativity, with the
Riemann-spacetime metric constructed as a combination of the two-tensor field
and the Minkowski metric. At high energies, the structure of the theory is
qualitatively different from general relativity. Observable effects can arise
in suitable gravitational experiments.

16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
4
The categories of this paper are: cond-mat
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
3
The categories of this paper are: physics