27:
279:
Bilson-Thompson's original paper suggested that the higher-generation fermions could be represented by more complicated braidings, although explicit constructions of these structures were not given. The electric charge, colour, and parity properties of such fermions would arise in the same way as for
229:
to preon-like objects which were extended ribbons, rather than point-like particles. This provided a possible explanation for why ordering of the subcomponents matters (giving rise to colour charge) whereas in the older Rishon Model, this feature must be treated as an
237:
This model leads to an interpretation of electric and colour charge as a topological quantities: electric charge as the number of twists carried on the individual ribbons, and colour charge as the number of variants of such twisting for a fixed electric charge.
280:
the first generation. The model was expressly generalized for an infinite number of generations and for the weak force bosons, but not for photons or gluons, in a 2008 paper by Bilson-Thompson, Hackett, Kauffman and Smolin.
213:
that would describe the interactions of such particles, nor is it possible to show that such particles are fermions, nor that the gauge groups or interactions of the
Standard Model are realised. Utilization of
261:
comes in discrete chunks, excitations of spacetime itself may play the role of preons, and give rise to the standard model of particle physics as an emergent property of the quantum gravity theory.
523:
178:
44:
35:
478:
102:
276:
with correct charge and parity properties have been modelled using preons constituted of braids of spacetime as the building blocks.
74:
121:
289:
457:
Bilson-Thompson, Hackett, Kauffman, and Smolin (2008). Particle
Identifications From Symmetries of Braided Network Invariants.
81:
51:
88:
242:
70:
348:
Bilson-Thompson, Sundance O.; Markopoulou, Fotini; Smolin, Lee (2007). "Quantum gravity and the standard model".
293:
210:
402:
40:
518:
234:
assumption. Bilson-Thompson refers to his extended ribbons as "helons", and his model as the Helon Model.
174:
193:
There have been recent claims that loop quantum gravity may be able to reproduce features resembling the
410:
185:, Canada. From 2010 he held a Ramsay Postdoctoral Fellowship at the University of Adelaide, Australia.
95:
367:
254:
162:
154:
325:
226:
219:
150:
209:
constituted of braids of spacetime as the building blocks. However, there is no derivation of the
438:
383:
357:
470:
297:
215:
182:
458:
375:
268:
proposed that loop quantum gravity could reproduce the standard model. In this scenario the
138:
423:
301:
250:
59:
371:
194:
158:
379:
512:
387:
205:
with correct parity properties have been modelled by
Sundance Bilson-Thompson using
269:
218:
concepts made it possible to demonstrate that the particles are able to survive
54:. Contentious material about living persons that is unsourced or poorly sourced
26:
246:
437:
Bilson-Thompson, Sundance (2005). "A topological model of composite preons".
225:
In a 2005 paper, Sundance Bilson-Thompson proposed a model which adapted the
502:
258:
161:
into loop quantum gravity. This would make loop quantum gravity a candidate
273:
146:
443:
362:
198:
202:
206:
142:
401:
Bilson-Thompson, Sundance O.; Markopoulou, Fotini; Smolin, Lee.
173:
In 2004 and 2005 Bilson-Thompson was a
Visiting Academic at the
20:
343:
341:
339:
459:
https://arxiv.org/PS_cache/arxiv/pdf/0804/0804.0037v1.pdf
324:
Castelvecchi, Davide; Valerie
Jamieson (12 August 2006).
177:. From 2006 to 2009 he was a full-time academic at the
153:. His ideas have attracted interest in the field of
157:, as they may represent a way of incorporating the
272:would already be unified. The first generation of
292:, Bilson-Thompson was the lead candidate for the
241:In a subsequent paper from 2006 Bilson-Thompson,
149:, rather than by treating preons as pointlike
8:
179:Perimeter Institute for Theoretical Physics
442:
361:
141:. He has developed the idea that certain
122:Learn how and when to remove this message
403:"Quantum gravity and the standard model"
313:
419:
408:
197:. So far only the first generation of
189:Summary of Bilson-Thompson's research
7:
319:
317:
249:suggested that in any of a class of
479:Australian Broadcasting Corporation
524:21st-century Australian physicists
14:
290:2016 Australian federal election
25:
503:Sundance Bilson-Thompson's blog
135:Sundance Osland Bilson-Thompson
264:Consequently, Bilson-Thompson
1:
137:is an Australian theoretical
52:secondary or tertiary sources
326:"You are made of space-time"
58:, especially if potentially
36:biography of a living person
380:10.1088/0264-9381/24/16/002
56:must be removed immediately
540:
471:"Senate - South Australia"
145:models may be represented
71:"Sundance Bilson-Thompson"
294:Australian Cyclists Party
188:
418:Cite journal requires
175:University of Adelaide
50:Please help by adding
475:Federal Election 2016
255:loop quantum gravity
253:theories similar to
220:quantum fluctuations
163:theory of everything
155:loop quantum gravity
16:Australian physicist
372:2007CQGra..24.3975B
350:Class. Quantum Grav
227:Harari Rishon Model
39:relies too much on
139:particle physicist
356:(16): 3975–3993.
300:ballot paper for
243:Fotini Markopolou
216:quantum computing
183:Waterloo, Ontario
132:
131:
124:
106:
531:
490:
489:
487:
485:
467:
461:
455:
449:
448:
446:
434:
428:
427:
421:
416:
414:
406:
398:
392:
391:
365:
345:
334:
333:
321:
127:
120:
116:
113:
107:
105:
64:
29:
21:
539:
538:
534:
533:
532:
530:
529:
528:
509:
508:
499:
494:
493:
483:
481:
469:
468:
464:
456:
452:
436:
435:
431:
417:
407:
400:
399:
395:
347:
346:
337:
323:
322:
315:
310:
302:South Australia
286:
251:quantum gravity
191:
171:
128:
117:
111:
108:
65:
63:
49:
45:primary sources
30:
17:
12:
11:
5:
537:
535:
527:
526:
521:
511:
510:
507:
506:
498:
497:External links
495:
492:
491:
462:
450:
444:hep-ph/0503213
429:
420:|journal=
393:
363:hep-th/0603022
335:
312:
311:
309:
306:
285:
282:
195:Standard Model
190:
187:
170:
167:
159:Standard Model
130:
129:
33:
31:
24:
15:
13:
10:
9:
6:
4:
3:
2:
536:
525:
522:
520:
519:Living people
517:
516:
514:
504:
501:
500:
496:
480:
476:
472:
466:
463:
460:
454:
451:
445:
440:
433:
430:
425:
412:
404:
397:
394:
389:
385:
381:
377:
373:
369:
364:
359:
355:
351:
344:
342:
340:
336:
331:
330:New Scientist
327:
320:
318:
314:
307:
305:
303:
299:
295:
291:
283:
281:
277:
275:
271:
267:
262:
260:
256:
252:
248:
244:
239:
235:
233:
228:
223:
221:
217:
212:
208:
204:
200:
196:
186:
184:
180:
176:
168:
166:
164:
160:
156:
152:
148:
147:topologically
144:
140:
136:
126:
123:
115:
112:February 2020
104:
101:
97:
94:
90:
87:
83:
80:
76:
73: –
72:
68:
67:Find sources:
61:
57:
53:
47:
46:
42:
37:
32:
28:
23:
22:
19:
482:. Retrieved
474:
465:
453:
432:
411:cite journal
396:
353:
349:
329:
287:
278:
265:
263:
240:
236:
231:
224:
192:
172:
134:
133:
118:
109:
99:
92:
85:
78:
66:
55:
38:
18:
270:four forces
62:or harmful.
513:Categories
308:References
247:Lee Smolin
211:Lagrangian
82:newspapers
41:references
259:spacetime
257:in which
151:particles
388:37406474
284:Politics
274:fermions
60:libelous
484:27 June
368:Bibcode
332:(2564).
296:on the
288:At the
199:leptons
96:scholar
386:
298:senate
266:et al.
245:, and
232:ad hoc
207:preons
203:quarks
169:Career
98:
91:
84:
77:
69:
439:arXiv
384:S2CID
358:arXiv
143:preon
103:JSTOR
89:books
34:This
486:2016
424:help
201:and
75:news
376:doi
181:in
43:to
515::
477:.
473:.
415::
413:}}
409:{{
382:.
374:.
366:.
354:24
352:.
338:^
328:.
316:^
304:.
222:.
165:.
505:.
488:.
447:.
441::
426:)
422:(
405:.
390:.
378::
370::
360::
125:)
119:(
114:)
110:(
100:·
93:·
86:·
79:·
48:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
