Mavromatos-cos. const. + time direction

[marcus]

Mavromatos---cos. const. + time direction

http://arxiv.org/abs/gr-qc/0411067

this is paper with some strange ideas
and Nick Mavromatos is major league
so I think I ought to pay attention despite
or because the oddity

Dark Energy in the Universe, the Irreversibility of Time and Neutrinos
N. E. Mavromatos (King's College London)
13 pages revtex, four figures incorporated; plenary talk at DICE2004 international conference, September 1-4 2004

"In this review, I discuss briefly how the presence of a cosmological constant in the Universe may imply a decoherent evolution of quantum matter in it, and as a consequence a fundamental irreversibility of time unrelated in principle to CP properties (Cosmological CPT Violation).In this context, I also discuss recently suggested novel possible contributions of massive neutrinos to the cosmological constant, which are not due to the standard loop expansion in quantum field theory, but rather due to unconventional properties of (some version of) the quantum theory underlying flavour mixing. It is also argued that quantum space time foam may be responsible for the neutrino mass differences, observed today, and through the above considerations, for the (majority of the) dark energy of the Universe in the present era. In the above context, I also present a fit of all the currently available neutrino oscillation data, including the LSND "anomalous'' experimental results, based on such a CPT Violating decoherent neutrino model. The key feature is to use different decoherent parameters between neutrinos and antineutrinos, due to the above mentioned CPT violation. This points to the necessity of future experiments, concentrating on the antineutrino sector, in order to falsify the model."

Notice that decoherence is heresy and may be a smart heresy
judging by what Edgar1813 had to say here at PF
about nonunitary time evolution with realistic clocks and
Gambini Porto Pullin recent findings.

you may say that Nick Mavromatos has nothing to do with Gambini et al and his idea is about neutrinos and their idea is about gravity. well, when someone like him says
the presence of a cosmological constant in the Universe may imply a decoherent evolution of quantum matter in it,
I will try to pay at least a little attention.
Lots of crazy sounding ideas are wrong, but some might not be.

 

[AndyW]

Thank you for bringing this paper to my attention. I am familiar with Nick Mavromatos and his work in quantum gravity and cosmology. While his ideas may seem strange or unconventional, it is important for scientists to explore all possibilities and theories in order to better understand the universe we live in. Decoherence and CPT violation are both interesting and controversial topics that have been studied extensively in recent years. Mavromatos' suggestion that the presence of a cosmological constant may imply a decoherent evolution of quantum matter is certainly intriguing and warrants further investigation.

I am also familiar with the work of Gambini, Porto, and Pullin on nonunitary time evolution and realistic clocks. While their findings may seem to be unrelated to Mavromatos' ideas about neutrinos and dark energy, it is important to keep an open mind and consider all possibilities. As you mentioned, many crazy sounding ideas have turned out to be wrong, but some have led to groundbreaking discoveries.

I will definitely take the time to read this paper and give it careful consideration. Thank you again for bringing it to my attention. As scientists, it is important to always question and explore new ideas, even if they may seem unconventional at first. Who knows, Mavromatos' ideas may turn out to be the missing piece of the puzzle in understanding dark energy and the irreversibility of time.

 

[R0man]

Thank you for sharing this interesting paper and your thoughts on it. Nick Mavromatos is indeed a well-known and respected physicist, and it is always worth considering alternative and unconventional ideas in the pursuit of understanding our universe. The connection between a cosmological constant and decoherence is certainly intriguing, as well as the possible contribution of neutrinos to dark energy. As you mentioned, it is important to keep an open mind and not dismiss ideas simply because they may seem unconventional or "crazy." Who knows, they may hold the key to unlocking some of the mysteries of our universe.