Results 31 to 40 of about 32,076 (212)
Time discretization from noncommutativity
Physics Letters B, 2021 We show that a particular noncommutative geometry, sometimes called angular or ρ-Minkowski, requires that the spectrum of time be discrete. In this noncommutative space the time variable is not commuting with the angular variable in cylindrical ...
Fedele Lizzi, Patrizia Vitale
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Automorphism groupoids in noncommutative projective geometry [PDF]
, 2018 We address a natural question in noncommutative geometry, namely the rigidity observed in many examples, whereby noncommutative spaces (or equivalently their coordinate algebras) have very few automorphisms by comparison with their commutative ...
Cooney, Nicholas, Grabowski, Jan E.
core +3 more sources
Supersymmetry and noncommutative geometry [PDF]
Journal of Geometry and Physics, 1997 26pp ...
Kalau, W., Walze, M.
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Stratified Noncommutative Geometry
Memoirs of the American Mathematical SocietyWe introduce a theory of stratifications of noncommutative stacks (i.e., presentable stable ∞ \infty -categories), and we prove a reconstruction theorem that expresses them in terms of their strata and gluing data. This reconstruction theorem is compatible with symmetric monoidal structures, and with more general operadic structures ...
Ayala, David +2 more
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The Geometry of Noncommutative Spacetimes
Universe, 2017 We review the concept of ‘noncommutative spacetime’ approached from an operational stand-point and explain how to endow it with suitable geometrical structures. The latter involves i.a.
Michał Eckstein
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Type-II two-Higgs-doublet model in noncommutative geometry
Nuclear Physics B, 2022 In noncommutative geometry (NCG) the spectral action principle predicts the standard model (SM) particle masses by constraining the scalar and Yukawa couplings at some heavy scale, but gives an inconsistent value for the Higgs mass.
Fredy Jimenez +2 more
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INFLATIONARY COSMOLOGY FROM NONCOMMUTATIVE GEOMETRY [PDF]
International Journal of Modern Physics A, 1996 In the framework of the Connes-Lott model based on noncommutative geometry, the basic features of a gauge theory in the presence of gravity are reviewed, in order to show the possible physical relevance of this scheme for inflationary cosmology. These models naturally contain at least two scalar fields, interacting with each other whenever more than ...
LIZZI F +3 more
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Higher-Dimensional Regular Reissner–Nordström Black Holes Associated with Linear Electrodynamics
Universe, 2022 Following the interpretation of matter source that the energy-momentum tensor of anisotropic fluid can be dealt with effectively as the energy-momentum tensor of perfect fluid plus linear (Maxwell) electromagnetic field, we obtain the regular higher ...
Yu-Mei Wu, Yan-Gang Miao
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MIRROR FERMIONS IN NONCOMMUTATIVE GEOMETRY [PDF]
Modern Physics Letters A, 1998 In a recent paper we pointed out the presence of extra fermionic degrees of freedom in a chiral gauge theory based on Connes' noncommutative geometry. Here we propose a mechanism which provides a high mass to these mirror states, so that they decouple from low energy physics.
LIZZI F. +3 more
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Quantum Frustration as a Protection Mechanism in Non‐Topological Majorana Qubits
Annalen der Physik, Volume 538, Issue 4, April 2026.Quantum frustration is proposed as a robust protection mechanism for non‐topological ‐junction qubit. By leveraging distinct spatial profiles, co‐located Majorana modes couple to independent environments, creating incompatible pointer bases that suppress decoherence.
E. Novais
wiley +1 more source