منابع مشابه
Dualities and Emergent Gravity: Gauge/Gravity Duality
In this paper I develop a framework for relating dualities and emergence: two notions that are close to each other but also exclude one another. I adopt the conception of duality as ‘isomorphism’, from the physics literature, cashing it out in terms of three conditions. These three conditions prompt two conceptually different ways in which a duality can be modified to make room for emergence; a...
متن کاملEmergent gravity and Dark Energy
Given the expansion rate of the universe in terms of the Hubble constant H0 = (ȧ/a)0, one can define a critical energy density ρc = 3H 2 0/8πG which is required to make the spatial sections of the universe compact. It is convenient to measure the energy densities of the different species, which drive the expansion of the universe, in terms of this critical density using the dimensionless parame...
متن کاملNoncommutative Spacetime and Emergent Gravity
We argue that a field theory defined on noncommutative (NC) spacetime should be regarded as a theory of gravity, which we refer to as the emergent gravity. A whole point of the emergent gravity is essentially originated from the basic property: A NC spacetime is a (NC) phase space. This fact leads to two important consequences: (I) A NC field theory can basically be identified with a matrix mod...
متن کاملA Comment on Emergent Gravity
This paper is a set of notes that we wrote concerning the first version of Emergent Gravity [gr-qc/0602022]. It is our version of an exercise that we proposed to some of our students. The idea was to find mathematical errors and inconsistencies on some recent articles published in the arXiv. Specifically we show that ”Mathematics” used in Emergent Gravity is a potpourri of nonsense. This fact, ...
متن کاملEmergent Gravity from Noncommutative Spacetime
We showed before that self-dual electromagnetism in noncommutative (NC) spacetime is equivalent to self-dual Einstein gravity. This result implies a striking picture about gravity: Gravity can emerge from electromagnetism in NC spacetime. Gravity is then a collective phenomenon emerging from photons living in fuzzy spacetime. We elucidate in some detail why electromagnetism in NC spacetime shou...
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ژورنال
عنوان ژورنال: International Journal of Modern Physics D
سال: 2015
ISSN: 0218-2718,1793-6594
DOI: 10.1142/s0218271815440058