A Metrical Theory of Gravity with Condensed Matter Interpretation
نویسنده
چکیده
We define a metrical theory of gravity with preferred Newtonian frame (X i (x), T (x)) by It allows a condensed matter interpretation which generalizes LET to gravity. The Ξ-term influences the age of the universe. Υ > 0 avoids the big bang singularity. This solves the horizon problem without inflation. Most quantum GR problems disappear. An atomic hypothesis solves the ultraviolet problem by explicit regularization. We give a prediction about cutoff length.
منابع مشابه
Quantization of Gravity Based on a Condensed Matter Model
One way the ultraviolet problem may be solved is explicit physical regularization. In this scenario, QFT is only the long distance limit of some unknown non-Poincare-invariant microscopic theory. One can ask how complex and contrived such microscopic theories should be. We show that condensed matter in standard Newtonian framework is sufficient to obtain gravity. We derive a metrical theory of ...
متن کاملA Metric Theory of Gravity with Condensed Matter Interpretation
We consider a classical condensed matter theory in a Newtonian framework where conservation laws ∂tρ+ ∂i(ρv ) = 0 ∂t(ρv ) + ∂i(ρv v + p) = 0 are related with the Lagrange formalism in a natural way. For an “effective Lorentz metric” gμν it is equivalent to a metric theory of gravity close to general relativity with Lagrangian L = LGR − (8πG)(Υg − Ξ(g + g + g)) √−g We consider the differences be...
متن کاملThe emergence of spacetime in condensed matter approaches to quantum gravity
Condensed matter approaches to quantum gravity suggest that spacetime emerges in the low-energy sector of a fundamental condensate. This essay investigates what could be meant by this claim. In particular, I offer an account of low-energy emergence that is appropriate to effective field theories in general, and consider the extent to which it underwrites claims about the emergence of spacetime ...
متن کاملA generalization of the Lorentz ether to gravity with general-relativistic limit
We define a class of condensed matter theories in a Newtonian framework with a Lagrange formalism so that a variant of Noether’s theorem gives the classical conservation laws: ∂tρ+ ∂i(ρv ) = 0 ∂t(ρv ) + ∂i(ρv v + p) = 0. We show that for the metric gμν defined by ĝ = g √−g = ρ ĝ = g √−g = ρv ĝ = g √−g = ρvv + p these theories are equivalent to a metric theory of gravity with Lagrangian L = LGR ...
متن کاملWhat can gauge-gravity duality teach us about condensed matter physics?
I discuss the impact of gauge-gravity duality on our understanding of two classes of systems: conformal quantum matter and compressible quantum matter. The first conformal class includes systems, such as the boson Hubbard model in two spatial dimensions, which display quantum critical points described by conformal field theories. Questions associated with non-zero temperature dynamics and trans...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2008