Results 91 to 100 of about 391 (182)

Metric perturbations in noncommutative gravity

open access: yesJournal of High Energy Physics
We use the framework of Hopf algebra and noncommutative differential geometry to build a noncommutative (NC) theory of gravity in a bottom-up approach.
Nikola Herceg   +3 more
doaj   +1 more source

Time-dependent Aharonov–Bohm effect on the noncommutative space

open access: yesPhysics Letters B, 2016
We study the time-dependent Aharonov–Bohm effect on the noncommutative space. Because there is no net Aharonov–Bohm phase shift in the time-dependent case on the commutative space, therefore, a tiny deviation from zero indicates new physics. Based on the
Kai Ma, Jian-Hua Wang, Huan-Xiong Yang
doaj   +1 more source

Noncommutative Algebra and Noncommutative Geometry

open access: yes, 2014
Divided into three parts, the first marks out enormous geometric issues with the notion of quasi-freenss of an algebra and seeks to replace this notion of formal smoothness with an approximation by means of a minimal unital commutative algebra's smoothness. The second part of this text is then, devoted to the approximating of properties of nc.
openaire   +2 more sources

WKB Approximation in Noncommutative Gravity

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2007
We consider the quasi-commutative approximation to a noncommutative geometry defined as a generalization of the moving frame formalism. The relation which exists between noncommutativity and geometry is used to study the properties of the high-frequency ...
Maja Buric, John Madore, George Zoupanos
doaj  

On tea, donuts and non-commutative geometry [PDF]

open access: yesSurveys in Mathematics and its Applications, 2018
As many will agree, it feels good to complement a cup of tea by a donut or two. This sweet relationship is also a guiding principle of non-commutative geometry known as Serre Theorem.
Igor V. Nikolaev
doaj  

Noncommutative Spherical Codes

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki
Spherical codes, with a rich history spanning nearly five centuries, remain an area of active mathematical exploration and are far from being fully understood.
Krishna, K.M.
doaj   +1 more source

On the Stability of Thin-Shell Wormholes in Noncommutative Geometry

open access: yesAdvances in High Energy Physics, 2012
This paper reexamines a special class of thin-shell wormholes that are unstable in general relativity in the framework of noncommutative geometry. It is shown that, as a consequence of the intrinsic uncertainty, these wormholes are stable to small ...
Peter K. F. Kuhfittig
doaj   +1 more source

Quasinormal modes and shadow of noncommutative black hole. [PDF]

open access: yesSci Rep, 2022
Campos JAV   +3 more
europepmc   +1 more source

Matematyka i kosmologia

open access: yesZagadnienia Filozoficzne w Nauce, 2012
The mathematical and cosmological works of a group associated with the Copernicus Center for Interdisciplinary Studies in Cracow are summarized. The group consists mainly of M. Heller, L. Pysiak, W. Sasin, Z. Odrzygóźdź and J. Gruszczak.
Michał Heller
doaj  

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