Results 31 to 40 of about 2,110,870 (239)

Spin Entanglement Witness for Quantum Gravity. [PDF]

open access: yesPhysical Review Letters, 2017
Understanding gravity in the framework of quantum mechanics is one of the great challenges in modern physics. However, the lack of empirical evidence has lead to a debate on whether gravity is a quantum entity.
S. Bose   +9 more
semanticscholar   +1 more source

Cabinet of Curiosities: The Interesting Geometry of the Angle β = arccos ((3ϕ − 1)/4)

open access: yesFractal and Fractional, 2019
In this paper, we present the construction of several aggregates of tetrahedra. Each construction is obtained by performing rotations on an initial set of tetrahedra that either (1) contains gaps between adjacent tetrahedra, or (2) exhibits an aperiodic ...
Fang Fang   +3 more
doaj   +1 more source

Differential Geometrical Formulation of Gauge Theory of Gravity [PDF]

open access: yes, 2002
Differential geometric formulation of quantum gauge theory of gravity is studied in this paper. The quantum gauge theory of gravity which is proposed in the references hep-th/0109145 and hep-th/0112062 is formulated completely in the framework of ...
Wu, Ning, Xu, Zhan, Zhang, Da-Hua
core   +2 more sources

Periodic Modification of the Boerdijk–Coxeter Helix (tetrahelix)

open access: yesMathematics, 2019
The Boerdijk−Coxeter helix is a helical structure of tetrahedra which possesses no non-trivial translational or rotational symmetries. In this document, we develop a procedure by which this structure is modified to obtain both translational and ...
Garrett Sadler   +3 more
doaj   +1 more source

Quantum gravity from causal dynamical triangulations: a review [PDF]

open access: yesClassical and quantum gravity, 2019
This topical review gives a comprehensive overview and assessment of recent results in causal dynamical triangulations, a modern formulation of lattice gravity, whose aim is to obtain a theory of quantum gravity nonperturbatively from a scaling limit of ...
R. Loll
semanticscholar   +1 more source

Non-Local Game of Life in 2D Quasicrystals

open access: yesCrystals, 2018
On a two-dimensional quasicrystal, a Penrose tiling, we simulate for the first time a game of life dynamics governed by non-local rules. Quasicrystals have inherently non-local order since any local patch, the emperor, forces the existence of a large ...
Fang Fang   +3 more
doaj   +1 more source

Dilaton Gravity with a Non-minmally Coupled Scalar Field [PDF]

open access: yes, 2000
We discuss the two-dimensional dilaton gravity with a scalar field as the source matter. The coupling between the gravity and the scalar, massless, field is presented in an unusual form.
Callan C. G.   +6 more
core   +2 more sources

Closing Gaps in Geometrically Frustrated Symmetric Clusters: Local Equivalence between Discrete Curvature and Twist Transformations

open access: yesMathematics, 2018
In geometrically frustrated clusters of polyhedra, gaps between faces can be closed without distorting the polyhedra by the long established method of discrete curvature, which consists of curving the space into a fourth dimension, resulting in a ...
Fang Fang, Richard Clawson, Klee Irwin
doaj   +1 more source

Gravitational Decoherence [PDF]

open access: yes, 1938
We discuss effects of loss of coherence in low energy quantum systems caused by or related to gravitation, referred to as gravitational decoherence.
Bassi, Angelo   +2 more
core   +19 more sources

Quantum Gravity phenomenology [PDF]

open access: yesPhysics World, 2003
9 pages, LaTex. These notes were prepared while working on an invited contribution to the November 2003 issue of Physics World, which focused on quantum gravity. They intend to give a non-technical introduction (accessible to readers from outside quantum gravity) to "Quantum Gravity Phenomenology"
openaire   +3 more sources

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