An interesting topic to be discussed in the next weeks is how supersymmetry could solve the gauge hierarchy problem. Roughly speaking the idea is that due to the additional symmetry, quadratic divergences should cancel between the bosons and fermions.

An interesting approach to this is presented in Polonsky's Book: Supersymmetry: Structure and Phenomena. (A preprint version can still be found on arXiv.) In the chapter 3, the author follows a bottom-up approach: he is constructing a theory in which all the quadratic divergences are set to cancel. He then shows how this can be related to SUSY.

# Hep

26 November 2007

(category : ZOld-PhD Meetings)

Posted by Claude Becker at 14:01

16 November 2007

(category : ZOld-Litterature Reviews)

On Monday, 19th of November, I will present "Astrophysical Bounds on the Photon Charge and Magnetic Moment" by B. Altschul (University of South Carolina, Columbia) : http://arxiv.org/abs/0711.2038.

Jan

TeV gravity in four dimensions? arXiv:0711.2306">http://arxiv.org/abs/0711.2306">arXiv:0711.2306, by Calmet & Hsu. Leonardo & Alessandre

For coming literature reviews, please modify this one ("Administration -> Manage existing articles").

MVH

Jan

TeV gravity in four dimensions? arXiv:0711.2306">http://arxiv.org/abs/0711.2306">arXiv:0711.2306, by Calmet & Hsu. Leonardo & Alessandre

For coming literature reviews, please modify this one ("Administration -> Manage existing articles").

MVH

Posted by Jan Mrazek at 14:19

12 November 2007

(category : ZOld-PhD Meetings)

23/Oct: Is there a new physics between electroweak and Planck scales? (Jan)

30/Oct: Is there a new physics between electroweak and Planck scales? [continued] (Jan)

06/Nov: Brans-Dicke gravitation (Daniel)

13/Nov: Brans-Dicke gravitation [continued] (Daniel) & Gauge Hierarchy Problem (Claude)

20/Nov: Hierarchy Problem using Dimensional Regularization (Alessandro)

27/Nov: Barbieri "Ten Lectures on EW Interactions" [Sections 1-4] (Claude & Marc)

04/Dec: Barbieri "Ten Lectures on EW Interactions" [Sections TBA]

30/Oct: Is there a new physics between electroweak and Planck scales? [continued] (Jan)

06/Nov: Brans-Dicke gravitation (Daniel)

13/Nov: Brans-Dicke gravitation [continued] (Daniel) & Gauge Hierarchy Problem (Claude)

20/Nov: Hierarchy Problem using Dimensional Regularization (Alessandro)

27/Nov: Barbieri "Ten Lectures on EW Interactions" [Sections 1-4] (Claude & Marc)

04/Dec: Barbieri "Ten Lectures on EW Interactions" [Sections TBA]

Posted by Claude Becker at 18:38

7 November 2007

(category : ZOld-Litterature Reviews)

Here some suggestions by Alexey, Claudio, Riccardo, ... :

New articles are added on top of this list ("Administration -> Manage existing articles").

December :

A) arXiv:0708.1281

or a new paper on the same topic :

arXiv:0712.1230

Anomaly mediated neutrino-photon interactions

November :

A)arXiv:0711.2274

de Sitter Relativity: a New Road to Quantum Gravity

A)arXiv:0711.1967

Radiation Driven Inflation

A)arXiv:0704.1845

The Lee-Wick Standard Model

A)arXiv:0705.1749

Warped Leptogenesis with Dirac Neutrino Masses

A)arXiv:0705.2029

Ultrahigh-energy neutrino flux as a probe of large extra-

dimensions

A)arXiv:0705.2047

Non-Metric Gravity II: Spherically Symmetric Solution, Missing

Mass and Redshifts of Quasars

A)arXiv:0705.2643

Symmetries,Singularities and the De-Emergence of Space

A)arXiv:0709.3189

The necessity of dark matter in MOND within galactic scales

Posted by Claude Becker at 14:58

31 October 2007

(category : ZOld-Seminars)

Posted by Claude Becker at 11:16

Comments (2)

(category : ZOld-Litterature Reviews)

Please feel free to suggest any interesting papers for litterature review :)

Posted by Claude Becker at 11:16

(category : ZOld-Contact)

Posted by Claude Becker at 11:06

30 October 2007

(category : ZOld-PhD Meetings)

* Accelerator Theory (presented by experimentalist from 6th floor)

* Coleman-Weinberg paper

* Strong CP problem

* Renormalization group: Standard vs. Wilsonian approach

* How is SUSY supposed to solve the Hierarchy Problem?

* finish discussing gauge hierarchy problem within dimensional regularisation

* . . .

* Coleman-Weinberg paper

* Strong CP problem

* Renormalization group: Standard vs. Wilsonian approach

* How is SUSY supposed to solve the Hierarchy Problem?

* finish discussing gauge hierarchy problem within dimensional regularisation

* . . .

Posted by Claude Becker at 17:18

(category : ZOld-PhD Meetings)

Daniel is going to present Brans-Dicke theory of gravitation.

We will mainly discuss the first paper.

But, I also recommend the second one, quite interesting.

cya

We will mainly discuss the first paper.

But, I also recommend the second one, quite interesting.

cya

Posted by Claude Becker at 17:16

23 October 2007

(category : ZOld-PhD Meetings)

So this morning we had the first real meeting. In my opinion it was interesting, and I really think it is a good point if Oleg or any other senior physicist could come.

Now we have to decide what to do the coming weeks ; it would be good if we knew more in advance what will come (I apologize for this time). I also think this blog is a good place to write down what happens.

Next week we will for sure finish the discussion about Misha's paper, meaning in particular the introduction of his model.

Other topics which will be covered :

- Coleman & Weinberg

- "Affleck-Dine gravity" ; proposed by Daniel

For me it would be interesting to look also in more details at other scenarios for BSM ; in particular those which are not studied by any group here at EPFL. I think at :

- GUT : look at one example just to get a more precise idea

- Technicolor

- Little Higgs

I think I have written enough for my first post ; please react and propose other topics.

MVH

Jan

Now we have to decide what to do the coming weeks ; it would be good if we knew more in advance what will come (I apologize for this time). I also think this blog is a good place to write down what happens.

Next week we will for sure finish the discussion about Misha's paper, meaning in particular the introduction of his model.

Other topics which will be covered :

- Coleman & Weinberg

- "Affleck-Dine gravity" ; proposed by Daniel

For me it would be interesting to look also in more details at other scenarios for BSM ; in particular those which are not studied by any group here at EPFL. I think at :

- GUT : look at one example just to get a more precise idea

- Technicolor

- Little Higgs

I think I have written enough for my first post ; please react and propose other topics.

MVH

Jan

Posted by Jan Mrazek at 13:21

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