The Spectral Action Principle
- A. Chamseddine, A. Connes
- Physics
- 3 June 1996
Abstract:We propose a new action principle to be associated with a noncommutative space . The universal formula for the spectral action is where is a spinor on the Hilbert space, is a scale and a…
Gravity and the standard model with neutrino mixing
- A. Chamseddine, A. Connes, M. Marcolli
- Physics
- 23 October 2006
ARASON H, 1992, PHYS REV D, V46, P3945, DOI 10.1103-PhysRevD.46.3945; Atiyah M.F., 1967, K THEORY; Avramidi I. G., 1986, THESIS MOSCOW U; BARRETT JW, HEPTH0608221; Carminati L, 1999, EUR PHYS J C,…
Mimetic dark matter
- A. Chamseddine, V. Mukhanov
- Physics
- 25 August 2013
A bstractWe modify Einstein’s theory of gravity, isolating the conformal degree of freedom in a covariant way. This is done by introducing a physical metric defined in terms of an auxiliary metric…
Cosmology with Mimetic Matter
- A. Chamseddine, V. Mukhanov, A. Vikman
- Physics
- 16 March 2014
We consider minimal extensions of the recently proposed Mimetic Dark Matter and show that by introducing a potential for the mimetic non-dynamical scalar field we can mimic nearly any gravitational…
Locally Supersymmetric Grand Unification
- A. Chamseddine, R. Arnowitt, P. Nath
- Physics
- 4 October 1982
Topological gravity and supergravity in various dimensions
- A. Chamseddine
- Mathematics, Physics
- 29 May 1990
Resolving cosmological singularities
- A. Chamseddine, V. Mukhanov
- Physics
- 18 December 2016
We find a simple modification of the longitudinal mode in General Relativity which incorporates the idea of limiting curvature. In this case the singularities in contracting Friedmann and Kasner…
Non-Abelian BPS Monopoles in N=4 Gauged Supergravity
- A. Chamseddine, M. Volkov
- Physics
- 21 July 1997
We study static, spherically symmetric, and purely magnetic solutions of SU(2) × SU(2) gauge supergravity in four dimensions. A systematic analysis of the supersymmetry conditions reveals solutions…
NonAbelian solitons in N=4 gauged supergravity and leading order string theory
- A. Chamseddine, M. Volkov
- Physics
- 25 November 1997
We study static, spherically symmetric, and purely magnetic solutions of the N=4 gauged supergravity in four dimensions. A systematic analysis of the supersymmetry conditions reveals solutions which…
Cytokine Activation of Nuclear Factor &kgr;B in Vascular Smooth Muscle Cells Requires Signaling Endosomes Containing Nox1 and ClC-3
It is concluded that in response to tumor necrosis factor-&agr; and interleukin-1&bgr;, NADPH oxidase generates ROS within early endosomes and that Nox1 cannot produce sufficient ROS for cell signaling in the absence of ClC-3.
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