Recent content by mister i

Of course, I added “could”, but has cosmic inflation actually been experimentally confirmed?

My question was: In an infinite universe, could different inflationary processes have occurred in different regions, each giving rise to its own local universe? In the Wikipedia article on the Multiverse, Level II effectively answers part of the question, although its title is Level II...

In an infinite universe, could different inflationary processes have occurred in different regions, each giving rise to its own local universe? (differents observed universes), independent and not causally connected to the others? I have read the Multiverse entry on Wikipedia, but this...

In the case of an infinite universe, the BB singularity seems even more difficult to understand: in a time interval dt the universe would go from zero volume to infinite volume?

If the universe is spatially infinite today, it seems unavoidable that it has always been infinite. A finite space cannot become infinite through continuous expansion. In the FLRW framework, physical distances scale as d_phys = a(t) · d_comoving If the comoving spatial manifold is infinite...

In general, do the oscillations of the electric field in an electromagnetic wave always occur in two dimensions? (Even if they are circular, for example like a 2D sheet of paper that rotates.) Could we say that an electromagnetic wave encodes three-dimensional information of an electric field...

Is the number of Higgs "particles" per unit volume constant (or Higgs field value), even in expanding space?

My knowledge of physics is very limited, for example I don't know if kinetic energy could have an equivalence with matter through the formula ##m=E/c^2##. If it does, then my common sense tells me that it must be very large since there are billions of billions of stars moving at high speeds in...

It is said that the universe is made up of approximately 4.9% ordinary matter, 26.8% dark matter and 69.3% dark energy. Why isn't ordinary energy included in this "pie"? I suppose it is included within ordinary matter, but could it be calculated what % are particles with mass and what % is pure...

I also think there is no limit but about references: https://link.springer.com/article/10.1007/BF00662806 https://arxiv.org/abs/hep-th/0210109

Can the force of gravity overcome the Planck force? I remember that a long time ago I read that in the universe the Planck force was the maximum force that could be reached. But when Sagittarius A and the black hole at the center of the Andomeda galaxy approach, I have made the calculation that...

Sorry, but in this post I am not talking about unit conversions, but rather I deduce "virtual" equations solely through constants and dimensions. Specifically, these are the 4 that I put here again: (1) ## m = k (c^3/G) t ## (2) ## m = k (c^2/G) l ## (3) ## m = k (Fp/c) t ##...

We know that in the universe we can establish an equivalence between length and time through a constant (the speed of light): l = ct and talk about length in units of time (light-years). But, by playing mathematically with the dimensions of M, L and T and the constants G and c we can see...

I'm not English (I speak Catalan), but I suppose schlumpf has no translation or meaning and is an ironic response. I would have really liked this answer. For me, all the answers are useful to see what physicists currently think about the matter. But the question was to rule out that there was...

As far as I know a field is spatial&time region in which each point has a physical quantity associated with it (vector or scalar). We know from GR that in the case of the gravitational field it is due (only?) to a curvature of space. But what about the other fields? What gives the value...