Results 21 to 30 of about 259 (132)
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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Noncommutative geometry as a regulator [PDF]
Physical Review D, 2000 We give a perturbative quantization of space-time $R^4$ in the case where the commutators $C^{μν}=[X^μ,X^ν]$ of the underlying algebra generators are not central . We argue that this kind of quantum space-times can be used as regulators for quantum field theories . In particular we show in the case of the $ϕ^4$ theory that by choosing appropriately the
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REVIEW OF THE PHENOMENOLOGY OF NONCOMMUTATIVE GEOMETRY [PDF]
International Journal of Modern Physics A, 2004 We present a pedagogical review of particle physics models that are based on the noncommutativity of space–time, [Formula: see text], with specific attention to the phenomenology these models predict in particle experiments either in existence or under development.
Hinchliffe, I., Kersting, N., Ma, Y. L.
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Curvature in noncommutative geometry [PDF]
, 2019 Our understanding of the notion of curvature in a noncommutative setting has progressed substantially in the past ten years. This new episode in noncommutative geometry started when a Gauss-Bonnet theorem was proved by Connes and Tretkoff for a curved noncommutative two torus. Ideas from spectral geometry and heat kernel asymptotic expansions suggest a
Fathizadeh, Farzad, Khalkhali, Masoud
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REMARKS ON INFLATION AND NONCOMMUTATIVE GEOMETRY [PDF]
Modern Physics Letters A, 2001 We briefly discuss some possible cosmological implications of noncommutative geometry. While the noncommutativity we consider does not affect gravity, it can play an important role in the dynamics of other fields that are present in the early universe.
Chu, CS, Greene, BR, Shiu, Man Lai Gary
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String Geometry and the Noncommutative Torus [PDF]
Communications in Mathematical Physics, 1999 37 pages, LaTeX. Major revisions in section 3.
LANDI G., LIZZI, FEDELE, SZABO R.
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Noncommutative Schwarzschild geometry and generalized uncertainty principle
European Physical Journal C: Particles and Fields, 2019 We discuss a possible link between the deformation parameter $$\Theta ^{\mu \nu }$$ Θμν arising in the framework of noncommutative geometry and the parameter $$\beta $$ β of the generalized uncertainty principle (GUP). We compute the shift of the Hawking
T. Kanazawa +3 more
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Top Quark Pair-Production in Noncommutative Standard Model
Advances in High Energy Physics, 2020 The differential cross-section of the top quark pair production via the quark-antiquark annihilation subprocess in hadron collision is calculated within the noncommutative standard model. A pure NC analytical expression for the forward-backward asymmetry
M. Fisli, N. Mebarki
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Quantum Spacetime, Noncommutative Geometry and Observers
Universe, 2021 I discuss some issues related to the noncommutative spaces κ and its angular variant ρ-Minkowski with particular emphasis on the role of observers.
Fedele Lizzi
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Noncommutative Geometry and MOND
Journal of High Energy Physics, Gravitation and Cosmology, 2022 Modified Newtonian dynamics (MOND) is a hypothesized modification of Newton's law of universal gravitation to account for the flat rotation curves in the outer regions of galaxies, thereby eliminating the need for dark matter. Although a highly successful model, it is not a self-contained physical theory since it is based entirely on observations.
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