Results 91 to 100 of about 32,076 (212)

Examples of noncommutative manifolds: complex tori and spherical manifolds

open access: yes, 2007
We survey some aspects of the theory of noncommutative manifolds focusing on the noncommutative analogs of two-dimensional tori and low-dimensional spheres. We are particularly interested in those aspects of the theory that link the differential geometry
Plazas, Jorge
core   +2 more sources

Functorial constructions related to double Poisson vertex algebras

open access: yesJournal of the London Mathematical Society, Volume 112, Issue 3, September 2025.
Abstract For any double Poisson algebra, we produce a double Poisson vertex algebra using the jet algebra construction. We show that this construction is compatible with the representation functor which associates to any double Poisson (vertex) algebra and any positive integer a Poisson (vertex) algebra.
Tristan Bozec   +2 more
wiley   +1 more source

The Gribov problem in Noncommutative gauge theory

open access: yes, 2018
After reviewing Gribov ambiguity of non-Abelian gauge theories, a phenomenon related to the topology of the bundle of gauge connections, we show that there is a similar feature for noncommutative QED over Moyal space, despite the structure group being ...
Kurkov, Maxim, Vitale, Patrizia
core   +1 more source

COMPLEX GRAVITY AND NONCOMMUTATIVE GEOMETRY [PDF]

open access: yesInternational Journal of Modern Physics A, 2001
The presence of a constant background antisymmetric tensor for open strings or D-branes forces the space-time coordinates to be noncommutative. An immediate consequence of this is that all fields get complexified. By applying this idea to gravity one discovers that the metric becomes complex. Complex gravity is constructed by gauging the symmetry U(1,
openaire   +3 more sources

Path Integral Spin Dynamics for Quantum Paramagnets

open access: yesAdvanced Physics Research, Volume 4, Issue 8, August 2025.
The study has developed a path integral method, which is a classical approach, combined with atomistic spin dynamics simulations to calculate thermal quantum expectation values. This method can handle Hamiltonians with non‐linear terms, which are important for describing uniaxial anisotropies and mechanical constraints.
Thomas Nussle   +2 more
wiley   +1 more source

Dirac Theory in Noncommutative Phase Spaces

open access: yesPhysics
Based on the position and momentum of noncommutative relations with a noncanonical map, we study the Dirac equation and analyze its parity and time reversal symmetries in a noncommutative phase space.
Shi-Dong Liang
doaj   +1 more source

Noncommutative Induced Gauge Theories on Moyal Spaces

open access: yes, 2007
Noncommutative field theories on Moyal spaces can be conveniently handled within a framework of noncommutative geometry. Several renormalisable matter field theories that are now identified are briefly reviewed.
Chepelev I   +21 more
core   +4 more sources

Heisenberg‐smooth operators from the phase‐space perspective

open access: yesMathematische Nachrichten, Volume 298, Issue 8, Page 2845-2866, August 2025.
Abstract Cordes' characterization of Heisenberg‐smooth operators bridges a gap between the theory of pseudo‐differential operators and quantum harmonic analysis (QHA). We give a new proof of the result by using the phase‐space formalism of QHA. Our argument is flexible enough to generalize Cordes' result in several directions: (1) we can admit general ...
Robert Fulsche, Lauritz van Luijk
wiley   +1 more source

Geneza prawdopodobieństwa

open access: yesZagadnienia Filozoficzne w Nauce, 2006
After briefly reviewing classical and quantum aspects of probability, basic concepts of the noncommutative calculus of probability (called also free calculus of probability) and its possible application to model the fundamental level of physics are ...
Michał Heller
doaj  

Forces from noncommutative geometry [PDF]

open access: yes, 2001
Einstein derived general relativity from Riemannian geometry. Connes extends this derivation to noncommutative geometry and obtains electro-magnetic, weak and strong forces.
Schucker, T.
core   +3 more sources

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