Posted: Aug 13, 2010 11:49 am
by AMR
Just A Theory wrote:We know that the uncertainty principle is a fundamental property of quantum systems because of the wave-particle duality of the actors in such systems.
As I wrote above there are many interpretations of QM, is it merely a probability distribution or a material field?; several interpretations reject the reality of the wavefunction. E.g. the Stochastic mechanical interpretation.
via Wikipedia:
Edward Nelson (1966).
"Derivation of the Schrödinger Equation from Newtonian Mechanics". Physical Review 150: 1079–1085
Khavtain Namsrai (1985). Nonlocal Quantum Field Theory and Stochastic Quantum Mechanics. Springer. ISBN 9027720010
Roumen Tsekov (2009). "Dissipative and Quantum Mechanics". New Adv. Phys. 3: 35–44
The traditional Copenhagen interpretation would be that the question is meaningless until a measurement is actually made. Actual measurement/observation resolves the wave-particle duality question by the famous double-slit experiment, prior to the observation the Copenhagen interpretation would be that light is neither.
Oldskeptic wrote:What are all those radio images of cosmic background radiation all about then? All of the universe is filled with it particularly “empty space.” Empty space is filled with photons mainly in the microwave spectrum that have existed since expansion began, and to explain why the overall temperature of space has and is cooling physicists sight dilution of these photons by expansion.
As I said light does have a temperature associated with it from the matter that emitted it. The CMBR is radiated from a
fog of hydrogen plasma. As the universe expanded, both the plasma and the radiation filling it, grew cooler. When the universe cooled enough, stable atoms could form. These atoms could no longer absorb the thermal radiation, and the universe became transparent instead of being an opaque fog. The photons that existed at that time have been propagating ever since, though growing fainter and less energetic, since the exact same photons fill a larger and larger universe. This is the source for the term relic radiation, another name for the CMBR.

Oldskeptic wrote: Who or what theory or observation/s say that vacuum energy is increasing? I guess if you said that each cubic centimeter of empty space has an expected energy of X and then said that as space expands each cubic centimeter still has exactly X then intuition would tell you that vacuum energy is increasing proportionally to the expansion. But is that what is happening? Can you cite any interesting hypothesis or theory or equation that would support energy density of empty space remaining the same while empty space expands?

Check out Sky & Telescope PDF on Dark Energy, page 36 has a graphic.