Niels G. Gresnigt

5 Questions 22 Answers 0 Followers

Questions related from Niels G. Gresnigt

Is it possible (and sensible) to develop a bi-metric model with anti de Sitter metric at small scales and de Sitter metric at large scales?

Observational data indicates that the cosmological constant has a positive value, resulting in a de Sitter spacetime. In loop quantum gravity, the IR divergences in the Ponzano-Regge model can be...

08 March 2017 4,444 14 View

What are some unexplored applications of quantum groups to particle physics?

I have been spending some time learning about quantum groups and their representations and am interested in applications to high energy physics. Doing a literature search I found that in the last...

15 March 2016 7,511 5 View

How can I find the maximal compact subgroup of a quantum group SOq(n,m)?

Let's say I take the Lie group SO(2,3). It's maximal compact subgroup is SO(2)xSO(3). What I would like to know is what happens to this maximal compact subgroup if I deform to the quantum group...

15 December 2015 8,214 3 View

Is there any data from cosmological experiments available online?

I am supervising an undergraduate student doing a final year research project in statistics. For her project she would like to look at cosmological parameter estimation using Monte Carlo Markov...

19 March 2015 5,980 7 View

Is the concept of a point-particle compatible with current theories of quantum gravity?

In the Standard Model leptons and quarks are pointlike with no internal structure. The properties of these particles are then simply labels attached to points. I want to know if such a view of...

15 January 2015 9,541 13 View