I agree that are many hypothetical scenarios awaiting to be confirmed or disproved. My model is one of these. I also agree that Tevatron is running close to the LHC, but not near the energy threshold and luminosity that LHC will provide in sustained full operation for a number of years to come.

Regarding physics beyond the Standard Model, there have been recently many reports of detector anomalies possibly pointing towards dark matter (Pamela, Atic, CDF, Centauros and AntiCentauros). Interestingly enough, signals of ‘unparticles’ may already explain low energy parity violation and the NuTeV anomaly (see for example Phys. Rev. D 78, 075015 (2008)). Anyons are objects with fractional spin living in 2+1 dimensions that are involved in Fractional Quantum Hall Effect, a proven phenomenon in condensed matter. Are there anyons in 3+1 dimensions?

So, it is rather premature to conclude from Tevatron that LHC will ONLY confirm the Higgs and SUSY. Only time will tell.

Cheers.

Ervin

Thanks for the link in the email! Yes, I’ve heard many hypotheses about new physics beyond 1 TeV scale (extra dimensions etc. etc.), and honestly, always had an impression that authors want new physics to be there rather than really expect it. Note that energy scales reached at Tevatron are already quite close to the characteristic energy scales of early runs of LHC, and nothing nearly as dramatic as particles of arbitrary spin you want to see have shown up.

I think, there are no virtually no indications of new physics at LHC – what will be found out is Higgs boson (certainly) and SUSY (maybe).

Cheers,
Dmitry.

You are almost correct in your assessment. It is largely a wish rather than an expectation. Having said that, please keep in mind that many authors predict that the 1…5 TeV scale marks the LOWEST bound of a “new physics” sector lying beyond the Standard Model. For instance, Donoghue et al. in their classical textbook “Dynamics of the Standard Model” anticipate new gauge interactions having an intrinsic energy scale of few TeV. Following the prescription of effective field theory, these interactions introduce non-renormalizable terms in the Lagrangian. Constraints on various processes place bounds on such hypothetical structures that may show up in the NEAR or DEEP TeV region.

Cheers,

Ervin

Cheers
Dmitry.

Nothing special about the LHC scale except the fact that, when fully operational, LHC will be able to repeatedly probe sectors never accesible before. There is, of course, a rather depressing scenario that no new physics exist beyond the currently available probing energy and luminosity. Many, including myself, hope that this is not the case.

Regards,

Ervin

I believe running LHC and ILC may reveal phase transitions out of equilibrium and dynamic patterns that were never seen or anticipated.

Why then LHC energy scale is so special for your considerations?

Cheers,
Dmitry.

Time dependence is indeed one aspect of the physics on ultrashort time scales (LHC)or heavy ion collisions (RHIC). But there is more to these phenomena. I believe running LHC and ILC may reveal phase transitions out of equilibrium and dynamic patterns that were never seen or anticipated. Proper account of these phenomena require the passage from equilibrium QFT to the tools of non-extensive statistical physics, from “smooth” differential operators to fractional operators. My research suggests that this passage leads to an unexpected spectrum of behaviors, including emergence of complexons (fractional number of quanta per state, similar to Georgi’s unparticles)and dynamically generated mixtures of gauge bosons and fermions (states with arbitrary spin).
I include here some references, in case you are interested:

doi:10.1016/j.chaos.2005.09.012

doi:10.1016/j.cnsns.2008.07.017

http://www.ptep-online.com/ind.....-15-02.PDF

Best wishes for 2009!

Ervin

I was thinking about your question. Is it the time dependence you are actually asking me about?

Usually, in QFTs we are dealing with cross-sections and S-matrix, that is, matrix elements between in- and out-vacua. The reason for that is that all interesting physics happens so fast in high energy collisions (and in so small volume), that is all we need and its square is all we can measure. And I understand that you want to see how correlation functions of QFTs change with time, right?

In this respect, LHC will not help much (high energy protons and antiprotons are colliding), but RHIC actually will (and helps a lot already). The reason is that heavy Au ions are colliding at RHIC, and various collective phenomena become important for understanding of physics of these collisions (say, it is important to know how quark-gluon plasma gets thermalized), and time dependence has more possibilities to show up.

Is time dependence what you asked about?

Cheers,
Dmitry.

Thanks for the reply. Happy holidays to you too.

Ervin

Thanks! No, I did not know about Rubi’s work, I’ll take a look on it.

As for the LHC, I doubt that the course of the mainstream will be somehow affected. Also, I think that your question is very general for me to find any easy answer to it.

Merry Xmas
Dmitry.

Thank you for this informative post. Talking about non-equilibrium dynamics and its intriguing implications, are you familiar with the work of J. M. Rubi on small-scale systems ?:

http://antonello.unime.it/atti.....801020.pdf

I’m finding that his model may offer unconventional explanations on some of the open questions raised by the Standard Model for particle physics and, possibly, recently reported detector anomalies. Time permitting,I hope to be able to publish these results in the first part of 2009.

Also, on the topic of fractals, chaos and fractional dynamics in field theory, I was (and continue to be) seriously engaged in this line of research. What do you think are the chances that these ideas will gain traction after LHC goes on line?

Cheers,

Ervin