## Guest posts

In this page I collect links to posts written by fellow researchers, bloggers, or just friends on topics of interest to this blog’s main content – science. My hope is that by crafting an easy-to-access permanent list these posts get the attention they deserve…

- April 2nd, 2007 – Amedeo Balbi: Dark Energy for Beginners : an introduction to a fascinating and controversial topic of today’s cosmology by Amedeo, a researcher in Rome and successful author of “The music of Big Bang”
- July 12th, 2007 – Fabio Zandanel: Dark Matter and the MAGIC Telescope : a discussion of the signatures of dark matter accessible to gamma ray astrophysics by a member of the MAGIC collaboration
- July 29th, 2007 – Daniele Bortoluzzi: LISA and its challenges : a researcher in Trento, Daniele offers a discussion of the surprising mechanical challenges of the LISA interferometer, which has the potential of finally detecting gravitational waves
- October 4th, 2007 – Marni D. Sheppeard: Is Category Theory Useful ? : Marni, a theoretical physicist from New Zealand, gives a very simple and clear introduction to category theory, a non-mainstream development which may provide the key to solve many open problems in theoretical physics
- October 14th, 2007 – Louise Riofrio: Fundamental Values : Louise, a researcher in cosmology from the west coast, provides a clear and entertaining discussion on the concept of fundamental constants in physics
- October 16th, 2007 – Alejandro Rivero: sBootstrap : Alejandro, a theoretical physicist in Zaragoza, explains his bold idea on how we might have been looking for supersymmetric particles in the wrong place.
- October 18th, 2007 – Rick Ryals: “Dirac’s holes and Einstein’s constant” : Rick, a independent researcher, discusses his pet theory on the connection between Dirac’s negative energy states and the curvature of the universe.
- October 29th, 2007 – Carl Brannen: “Four Magnificent Papers by Authors Who Think I’m a Complete Idiot”: Carl, an engineer with a masters in Physics and a penchant for fundamental theories, discusses loosely about symmetry, elastic stress and wave equations, and our preconceived notions on the speed of light.
- November 16th, 2007 – George Barouxis: “Extrinsic” Relativity: George is a translator of English books in Greek. In this post he discusses visually the laws describing special relativity and then goes on to discuss the geometry of spacetime with his visualization tools.
- December 13th, 2007 – Tony Smith: “Visualizing E8 Physics”: Tony is a lawyer with a research physics background. In this post he discusses an alternative interpretation to Garrett Lisi’s published one of the structure of the group and its transformation properties.
- April 30th, 2008 – Jeff Wyss: “The Relativistic Train”: Jeff is a physics professor at the University of Cassino, and he possesses excellent teaching skills. In this post he offers a derivation of the formula for relativistic velocities which only uses simple algebra and the concept of invariance.
- May 30th, 2008 – Paolo Schiavone:”Who said deep-sky astronomy is only possible from urban sites?”: Paolo is a skilled astro-imager, and he explains in this post some details and tricks necessary to make astounding images of the night sky wonders.
- June 23rd, 2008 – Rick Ryals: “The Anthropic Principle”: Rick, an independent researcher, discusses critically the Anthropic Principle.
- August 12th, 2008 – Marni D. Sheppeard: “Fun with Young Diagrams”: Marni, a researcher in category theory, explains the basics of a wonderful tool for combinatorics.
- September 4th, 2008 – Ben Allanach: “Predictions for SUSY Particle Masses”: Ben, a reader in theoretical physics at the University of Cambridge, discusses the predictions he and his colleagues have produced for SUSY particle masses, based on existing data.
- February 15th, 2009 – Marco Vedovato: “Jupiter: a little analysis about the GRS-LRS encounter”: Marco, an experienced amateur astronomer specialized in the Solar System, reports on the fascinating interaction of persistent vortices in the Jovian atmosphere.

Hi !

Please, could you give the e-mail address of Tony Smith ? I would like to contact him. It looks like his old address is not working and I cannot contact him. He knows me. Otherwise you could give him my address :

siul.segrob@gmail.com

Thanks a lot in advance,

Cheers,

Siul.

On the contrary I do not know you, but let me congratulate you by your choosing of pen-name. Umberto Eco did a similar one with “de Burgos”, at least in the Spanish version if “the name of the rose”. And I noticed in the internet that the blind librarian of a mythical library in Baghdad wore a similar name: gejor siul ibn segrob.

Hi

I think I have found something that could interest you about the Ether and gravity:

The only thing that pushes us to keep the concept of duality alive is gravity. Everything tends to show that matter is only spherical standing waves in a medium (Ether).

In my website http://unificationproject.blogspot.com/ I’m proposing a structure of the Ether that agrees gravity laws:

Through some famous quotes, that the theory of the Ether is the base hypothesis that have built all our fundamental physics theories and we will define space time as the mathematical description of the Ether behavior.

There exists a structure of the Ether that follows the inverse square law and agrees with Newton gravitational law using “Working model” software for simulation. This Ether definition is based on a springs structure

At the end of the website I’m proposing that matter is only a perception (schaumkommen) as Erwin Schroedinger said; and the new definition of matter that agrees with all basic physics theories should be: spherical standing waves that pull a portion of Ether and create a distrotion (gravity) through it.

http://unificationproject.blogspot.com/

This theory is simple and seems that it agrees with most physics laws. I’m sure that at least; it explains gravity at a quantum level

Thank you for visiting

Lol Alejandro, decyphering anonymous names is an occupation I had not thought about so far.

Dear Saad, gravity is not high in my list of interests. I would be unable to provide expert insight if I read your material, but I encourage any theoretician who stumbles in this column to have a look at your blog.

Cheers,

T.

T, after for years looking at approximate relationships, it seems that I have got some neurons shooting by themselves, so an strange force launched me to google for the anonymous. Ah, I saw the widow of the other Siul once, she entered to hear some of the speech of Agustin Garcia in Madrid, sit for ten minutes, and left.

About the recent comment in a mistery…, of course I shall be grateful if you read it, but I should be even more grateful if string theoreticians were willing to comment on it. Perhaps instead of abusing of you asking you to write about me, I could abuse in a different way and to take opportunity of your Guest Post section some day…

As for more info about decay width of the Higgs, I am sorry I haven got specific training, so only the standard literature as you guessed. The books we mentioned, plus the Higgs Hunter Guide or similar things.

Hmm, a comment went lost between 4 and 5, probably the spam trap. Basically I was thanking your offer of reading my 0710.1526, and volunteering myself for a guest post.

About the higgs, it is good I did that remark in your website, I had forgot about it. Yes I checked the predicted width against mass both for a top decay and for a higgs decay by using standard formulae from the textbooks, hoping to understand a bit more about the process of electroweak symmetry breaking (which is the cause of the difference between quintic and cubic dependence). But at the end it was mostly clutter in the plot, no more informational than as it is now.

LOL Alejandro, neurons shooting by themselves is a good thing, it makes you a true dreamer. Anyway, I answered you privately about the guest post (great idea).

For others, Alejandro is mentioning another thread here, one about the “mystery behind the Z width”. He who googleth will findeth.

Cheers,

T.

[...] and unorthodox ideas” in his blog and puts that in practice by letting very interesting guest bloggers write about their [...]

[...] Tommaso started a series of guest posts at his blog, some from mainstream scientists, some from “alternative theorists” with [...]

Wow! amazing

I like that!

hi could you post some other info. about discoveries in astronomy?i”m dona from Phil. tnx

Dear Dona,

I am not sure when, but this blog does also deal with Astronomy, so hang around and we will discuss something soon.

Cheers,

T.

What are some top universities in Italy for Physics?

Hi Larry,

I would say Roma “La Sapienza”, the “Scuola Normale Superiore” in Pisa, and the University of Padova are three among the top universities for Physics.

Cheers,

T.

molto grazie!!

Big-Crunch o Big-cracker?

Urgent

Hi,

Please read and forward Quantum Reality:

http://gaudwin.spaces.live.com/blog/cns!75D2857795790980!236.entry

Thanks,

A Gaudwin

HI,

I am new at this. Click on June 2008. The title of the peace is:

CERN and the Non-zero Possibility to destroy the universe.

Thanks’

AG

Hi! I’ve just come across your site and as a fellow Physicist and chess player, I just wanted to say what a pleasure it is to browse – thank you! I got Nxg4 in about a minute – I’d have lost on time – not an obvious move at all! Anyway, thanks again. I am but a mere undergraduate, so probably can’t contribute much to the general Physics discussion as yet, but watch this space!

All the best,

Claire Morris (20)

Hello Claire,

I will move this comment to the post about the game you mention. Thanks for visiting…

Cheers,

T.

Lungo il fiume sull’acqua, neppure io riuscii a vedere l’ultima puntata… way back when… troppa neve cadde e l’antenna venne messa fuori uso, ora per caso mi son trovata nel suo sito, quindi Lei e’ riuscito ad avere il video, sarebbe possibile per me pure?

Complimenti per la padronanza della lingua inglese, ….

Se possibile contattarLa per favore mi scriva.

Francesca

A seminar no-higgs-particle-after-all by Peter Higgs @ CERN

http://resonaances.blogspot.com/2009/04/no-higgs-particle-after-all.html

Is it April fool or some seriousness?

I am interested in providing a guest post for your blog with the following topic:

7 Excellent Open Courseware Collections to Learn About Physics

Could you please contact me and I can discuss it further with you? My email:

marywriting AT gmail DOT com

Thanks!

I have a fractal theory of light. I propose that light is fractal in nature. If light is fractal in nature, we will never reach its so-called elementary particle. Throw out the photon. This would explain why light behaves like a wave and a particle. If light waves were ever reducing and repeating like a fractal, we could never reach the smallest particle of light because it reduces infinitely. What would the application of fractal geometry do to our understanding of light as a wave and as a particle? How would quantum physics use fractal geometry. The uncertainty principle would be explained by fractal geometry. If something reduces infinitely, its actual location would reduce infinitely also. A particle’s momentum too could never be precisely measured because the smallest particle itself could never be pinpointed.I’d love to hear your comments. C.Freiberger 856 Coles Ferry Rd, Gallatin, Tn 37066 smallfreiguy@gmail.com

What if…?

1. You can write forces in relative way on Spiral of Ulam;

2. Spiral of Ulam is your Infinity

3. Every two edge points on that Spiral are very small according to the Lines

4. Any line is force in different Dimension

5. The forces are Infinitive on this Relative spiral

Read more at http://bgbar.blogspot.com

hi there, i’m endeavouring to get in touch with marni d sheppeard, if you (or anyone else reading this) has her one remaining valid gmail account greatly appreciated hearing from you, at luke.leighton@gmail.com many thanks