GAUGE-INVARIANT EXTENSION OF LINEARIZED HORAVA GRAVITY
نویسندگان
چکیده
منابع مشابه
Consistent extension of Horava gravity.
We propose a natural extension of Horava's model for quantum gravity, which is free from the notorious pathologies of the original proposal. The new model endows the scalar graviton mode with a regular quadratic action and remains power-counting renormalizable. At low energies, it reduces to a Lorentz-violating scalar-tensor gravity theory. The deviations with respect to general relativity can ...
متن کاملLinearized Gravity as a Gauge Theory
We discuss linearized gravity from the point of view of a gauge theory. In (3+1)dimensions our analysis allows to consider linearized gravity in the context of the MacDowell-Mansouri formalism. Our observations may be of particular interest in the strong-weak coupling duality for linearized gravity, in Randall-Sundrum brane world scenario and in Ashtekar formalism.
متن کاملOn IR solutions in Horava gravity theories
In this note we search for large distance solutions of Horava gravity. In the case of the ”detailed balance” action, gravity solutions asymptote to IR only above the cosmological constant (∼horizon) scale. However, if one adds IR dominant terms αR(3) + βΛW , one can recover general relativity solutions on usual scales in the real Universe, provided one fine-tunes the cosmological constant, reob...
متن کاملLecture VIII: Linearized gravity
We are now ready to consider the solutions of GR for the case of weak gravitational fields. This encompasses Newtonian gravity, as well as a few extensions thereof. In addition to its importance in e.g. the solar system, our study of linearized gravity will prepare us for the discussion of some of the weak-field experimental tests of GR (Lecture XI). It will also illustrate some of the issues t...
متن کاملS-duality for Linearized Gravity
We develope the analogue of S-duality for linearized gravity in (3+1)-dimensions. Our basic idea is to consider the self-dual (anti-self-dual) curvature tensor for linearized gravity in the context of the Macdowell-Mansouri formalism. We find that the strong-weak coupling duality for linearized gravity is an exact symmetry and implies small-large duality for the cosmological constant. Pacs numb...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Modern Physics Letters A
سال: 2011
ISSN: 0217-7323,1793-6632
DOI: 10.1142/s0217732311037145