Antony Lewis
@cosmologist.info
Professor of cosmology, University of Sussex. CMB, lensing and theory of observations.
The treachery of images is about to get much worse
April 13, 2025 at 10:26 AM
The treachery of images is about to get much worse
It's been an interesting few weeks for cosmology. To me, the new precision BAO data points from DESI look like quite a decent fit to the best-fit (DESI+CMB) standard ΛCDM model (central point in this figure). Shifts in the model parameters (open to solid points) are not that large.
April 2, 2025 at 8:17 PM
It's been an interesting few weeks for cosmology. To me, the new precision BAO data points from DESI look like quite a decent fit to the best-fit (DESI+CMB) standard ΛCDM model (central point in this figure). Shifts in the model parameters (open to solid points) are not that large.
According to Musk’s xAI latest model, things are going well for them.
February 22, 2025 at 9:26 AM
According to Musk’s xAI latest model, things are going well for them.
Our take on interpretation of DESI results.
Finding LLMs useful for draft abstract, intro and conclusions (sonnet), and o1 for filling in latex derivations (appendix and parts of proofs). But o1 is very suggestible and often ‘proves’ what you ask in a way that is wrong.
arxiv.org/abs/2412.13894
Finding LLMs useful for draft abstract, intro and conclusions (sonnet), and o1 for filling in latex derivations (appendix and parts of proofs). But o1 is very suggestible and often ‘proves’ what you ask in a way that is wrong.
arxiv.org/abs/2412.13894
Understanding acoustic scale observations: the one-sided fight against $Λ$
The cosmic microwave background (CMB) and baryon acoustic oscillations (BAO) provide precise measurements of the cosmic expansion history through the comoving acoustic scale. The CMB angular scale mea...
arxiv.org
December 19, 2024 at 7:55 AM
Our take on interpretation of DESI results.
Finding LLMs useful for draft abstract, intro and conclusions (sonnet), and o1 for filling in latex derivations (appendix and parts of proofs). But o1 is very suggestible and often ‘proves’ what you ask in a way that is wrong.
arxiv.org/abs/2412.13894
Finding LLMs useful for draft abstract, intro and conclusions (sonnet), and o1 for filling in latex derivations (appendix and parts of proofs). But o1 is very suggestible and often ‘proves’ what you ask in a way that is wrong.
arxiv.org/abs/2412.13894