5,347 reputation
1929
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age 65
visits member for 2 years, 6 months
seen 2 hours ago

I have a PhD in physics, but for my career, I worked as a software engineer. In my retirement, I have gone back to my first love, Physics. I attend lots of physics colloquia, seminars, conferences and summer schools mostly in astrophysics, cosmology and particle physics.


Apr
13
awarded  Popular Question
Apr
5
reviewed Reject suggested edit on Finding force vectors
Feb
4
awarded  Enlightened
Feb
4
awarded  Nice Answer
Jan
8
revised What is the equation for the scale factor of the universe, a(t), for the best fit of data to the $\Lambda CDM$ Model of Cosmology?
LCDM is a better name than the Standard Model of Cosmology
Jan
8
revised What is the equation for the scale factor of the universe, a(t), for the best fit of data to the $\Lambda CDM$ Model of Cosmology?
edited title
Jan
8
asked What is the equation for the scale factor of the universe, a(t), for the best fit of data to the $\Lambda CDM$ Model of Cosmology?
Nov
24
awarded  Nice Answer
Nov
8
revised How can the Higgs have so many different Yukawa couplings?
added 4 characters in body
Nov
8
answered How can the Higgs have so many different Yukawa couplings?
Nov
3
awarded  Nice Answer
Oct
21
awarded  Enlightened
Oct
21
awarded  Nice Answer
Oct
6
awarded  Yearling
Jul
17
awarded  Nice Question
Jun
29
revised Why do Photons want to be together?
deleted 10 characters in body
Jun
9
comment Do intergalactic magnetic fields imply an Open Universe?
@BenCrowell - thanks! Well, maybe that is it, or maybe Barrow et al will have a counterargument! I certainly don't understand the arguments to decide between them...
May
20
comment How do we know that there isn't a classical solution to the measurement problem/Quantum Mechanical uncertainty?
@BenCrowell Please reconsider your down vote with my new improved answer. I think I addressed all your objections...
May
20
revised How do we know that there isn't a classical solution to the measurement problem/Quantum Mechanical uncertainty?
Improved the answer
May
20
comment How do we know that there isn't a classical solution to the measurement problem/Quantum Mechanical uncertainty?
@BenCrowell I made a mistake in using the factoring problem. I should have used any of the problems where there is a known classical computer complexity class. The current quantum computers are very trivial - factoring 15 for example. A real quantum computer that does a non trivial problem faster than current classical computers will be non controversial and very convincing. I will leave another comment when I have updated the answer and perhaps you will take away the down vote.