Through the looking glass.
Text and Photo © JE Nilsson and CM Cordeiro 2013
One of my favourite lectures of 2012 comes from the field of quantum physics, entitled The End of Space and Time?, delivered by Robbert Dijkgraaf on 20 March 2012 at Gresham College in the United Kingdom. Dijkgraaf was President of the Royal Netherlands Academy of Arts and Sciences (KNAW), and is currently Director and Leon Levy Professor at the Institute for Advanced Study, Princeton, New Jersey, USA.
Amongst numerous interesting theories of quantum physics presented by Dijkgraaf, it was this lecture that pointed me in the direction of the works of J. A. Wheeler, where a fascinating read for me was a chapter entitled “Law without Law” (Wheeler 1983). I thought the suggestion given by Wheeler in the mid-1900s on why electrons had identical charges and mass – due to that they were in fact a single particle that goes up in time and comes down again in a flux – was most interesting since this idea captured in essence, the non-linearity of the concept of time (see article by Alasdair Wilkins on why the single electron universe does not hold on experimental grounds).
Wheeler’s proposition focused on a radical point about particle physics, in which the directional flow of time is immaterial and in fact, completely reversible, much in my view like Gödel’s rotating universe (Barrow 2011). He also pointed out that each electron traces a unique path through spacetime, in its own world line. By use of metaphor, I could perhaps liken Wheeler’s one particle thought to how each individual traces their own world line path through spacetime, creating realities and shaping destinies as it were. It is this too that most of us would also tend to contemplate at year end via New Year’s resolutions or when faced with life’s important events / challenges, to sit down and re-evaluate, re-contextualize life vision and goals.
Continue reading “J.A. Wheeler’s one particle, the eve of 2013”
