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visits member for 1 year, 6 months
seen Sep 5 at 8:39

Sep
4
comment Maximum voltage on metal sphere?
Ok - Thanks John
Sep
4
asked Maximum voltage on metal sphere?
Aug
28
awarded  Notable Question
Aug
27
accepted Do massive particles exchange Higgs bosons?
Aug
27
asked Do massive particles exchange Higgs bosons?
Jul
15
comment Friedmann Equations with varying G?
Could G remain constant but the definition of energy changes globally with cosmological time? In that case G itself would not have an explicit time dependence - only the energy units themselves change.
Jul
15
comment Maybe photon energy is constant as the Universe expands?
Actually I think ticster is right. I now think what I'm hypothesising is that the definition of energy scales with the scale factor.
Jul
14
comment Maybe photon energy is constant as the Universe expands?
In fact I think the Planck mass is scaling like $a(t)$. I think this in fact implies that $G \propto 1/a^2$ and together with a constant mass density we obtain a linear cosmology which fits observations quite well (see Melia's papers on the Arxiv).
Jul
14
comment Maybe photon energy is constant as the Universe expands?
I think the mass density now goes like $a/a^3 = 1/a^2$ leading to a linearly expanding cosmology ($a(t) \propto t$) which is very close to what is observed.
Jul
14
comment Maybe photon energy is constant as the Universe expands?
I think the implication of my hypothesis is that the masses of all particles, including the Plank mass, increase with the cosmological scale factor.
Jul
14
revised Maybe photon energy is constant as the Universe expands?
added 257 characters in body
Jul
14
asked Maybe photon energy is constant as the Universe expands?
Jul
11
revised Should a radiation-filled Universe be scale invariant?
added 70 characters in body
Jul
11
revised Should a radiation-filled Universe be scale invariant?
added 5 characters in body
Jul
11
asked Should a radiation-filled Universe be scale invariant?
Jul
4
accepted Measuring proper distance using a light beam
Jul
4
comment Measuring proper distance using a light beam
I just want to use the flat FRW metric $ds^2 = -c^2dt^2 + a^2(t)(dx^2+dy^2+dz^2)$.
Jul
4
asked Measuring proper distance using a light beam
Jul
2
awarded  Inquisitive
Jul
2
awarded  Curious