- #1

marcus

Science Advisor

Gold Member

Dearly Missed

- 24,738

- 785

In case anyone wants to comment, I thought I'd start a thread on it.

http://arxiv.org/abs/0908.3683

Matilde Marcolli (Caltech), Elena Pierpaoli (USC)

49 pages, 26 figures

(Submitted on 25 Aug 2009)

"We investigate cosmological predictions on the early universe based on the noncommutative geometry models of gravity coupled to matter. Using the renormalization group analysis for the Standard Model with right handed neutrinos and Majorana mass terms, which is the particle physics content of the most recent noncommutative geometry models, we analyze the behavior of the coefficients of the gravitational and cosmological terms in the Lagrangian derived from the asymptotic expansion of the spectral action functional of noncommutative geometry. We find emergent Hoyle-Narlikar and conformal gravity at the see-saw scales and a running effective gravitational constant, which affects the propagation of gravitational waves and the evaporation law of primordial black holes and provides Linde models of negative gravity in the early universe. The same renormalization group analysis also governs the running of the effective cosmological constant of the model. The model also provides a Higgs based slow-roll inflationary mechanism, for which one can explicitly compute the slow-roll parameters. The particle physics content allows for dark matter models based on sterile neutrinos with Majorana mass terms."

http://www.its.caltech.edu/~matilde/

Marcolli is full professor in the math department at Caltech.

She taught at MIT, then later was associate prof with tenure at the Max Planck Institute for Mathematics at Bonn (2003-2008).

She was born near the end of 1969 and got her PhD in 1997. Whole bunch of honors.

http://www.math.fsu.edu/~marcolli/MarcolliCV2007web.pdf

http://arxiv.org/abs/0908.3683

**Early Universe models from Noncommutative Geometry**Matilde Marcolli (Caltech), Elena Pierpaoli (USC)

49 pages, 26 figures

(Submitted on 25 Aug 2009)

"We investigate cosmological predictions on the early universe based on the noncommutative geometry models of gravity coupled to matter. Using the renormalization group analysis for the Standard Model with right handed neutrinos and Majorana mass terms, which is the particle physics content of the most recent noncommutative geometry models, we analyze the behavior of the coefficients of the gravitational and cosmological terms in the Lagrangian derived from the asymptotic expansion of the spectral action functional of noncommutative geometry. We find emergent Hoyle-Narlikar and conformal gravity at the see-saw scales and a running effective gravitational constant, which affects the propagation of gravitational waves and the evaporation law of primordial black holes and provides Linde models of negative gravity in the early universe. The same renormalization group analysis also governs the running of the effective cosmological constant of the model. The model also provides a Higgs based slow-roll inflationary mechanism, for which one can explicitly compute the slow-roll parameters. The particle physics content allows for dark matter models based on sterile neutrinos with Majorana mass terms."

http://www.its.caltech.edu/~matilde/

Marcolli is full professor in the math department at Caltech.

She taught at MIT, then later was associate prof with tenure at the Max Planck Institute for Mathematics at Bonn (2003-2008).

She was born near the end of 1969 and got her PhD in 1997. Whole bunch of honors.

http://www.math.fsu.edu/~marcolli/MarcolliCV2007web.pdf

Last edited: