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Hakeem Oluseyi

๐Ÿ‘ค Speaker
304 total appearances

Appearances Over Time

Podcast Appearances

StarTalk Radio
Hubble Trouble with Hakeem Oluseyi

And so all this different data, there's more than one probe, right? People are using different types of stars.

StarTalk Radio
Hubble Trouble with Hakeem Oluseyi

And so all this different data, there's more than one probe, right? People are using different types of stars.

StarTalk Radio
Hubble Trouble with Hakeem Oluseyi

Or do we just have to adjust the model? Well, people come up with these models that may be the expansion rate of the universe. We have it like, okay, there's this initial impulse, right? And then the universe evolves based on the energy densities of the constituents, of which there are three main ones, right? Radiation, which is stuff that moves very fast through space, but almost...

StarTalk Radio
Hubble Trouble with Hakeem Oluseyi

Or do we just have to adjust the model? Well, people come up with these models that may be the expansion rate of the universe. We have it like, okay, there's this initial impulse, right? And then the universe evolves based on the energy densities of the constituents, of which there are three main ones, right? Radiation, which is stuff that moves very fast through space, but almost...

StarTalk Radio
Hubble Trouble with Hakeem Oluseyi

not at all through time, matter, which moves very fast through time and almost not at all through space, and space-time, which has its own energy density that we call dark energy, which doesn't move through either one, right? And so initially, radiation dominates, then matter comes to dominate, then dark energy, i.e. space-time energy density, comes to dominate. We think.

StarTalk Radio
Hubble Trouble with Hakeem Oluseyi

not at all through time, matter, which moves very fast through time and almost not at all through space, and space-time, which has its own energy density that we call dark energy, which doesn't move through either one, right? And so initially, radiation dominates, then matter comes to dominate, then dark energy, i.e. space-time energy density, comes to dominate. We think.

StarTalk Radio
Hubble Trouble with Hakeem Oluseyi

Well, that's what he thinks, right? In each one, you can look at what the expansion rate would be of the universe. But here's the thing. Once we discovered the Higgs particle, First time we discovered what is known as a scalar quantum field. What do I mean by that, right? We'll ask you that. What do you mean by that?

StarTalk Radio
Hubble Trouble with Hakeem Oluseyi

Well, that's what he thinks, right? In each one, you can look at what the expansion rate would be of the universe. But here's the thing. Once we discovered the Higgs particle, First time we discovered what is known as a scalar quantum field. What do I mean by that, right? We'll ask you that. What do you mean by that?

StarTalk Radio
Hubble Trouble with Hakeem Oluseyi

That's for us to do. One of the things that we look at is what is a scalar quantum field?

StarTalk Radio
Hubble Trouble with Hakeem Oluseyi

That's for us to do. One of the things that we look at is what is a scalar quantum field?

StarTalk Radio
Hubble Trouble with Hakeem Oluseyi

I'll just ask myself questions and answer them. I'll query myself. Yeah, you read them.

StarTalk Radio
Hubble Trouble with Hakeem Oluseyi

I'll just ask myself questions and answer them. I'll query myself. Yeah, you read them.

StarTalk Radio
Hubble Trouble with Hakeem Oluseyi

Unauthorized procurements.

StarTalk Radio
Hubble Trouble with Hakeem Oluseyi

Unauthorized procurements.

StarTalk Radio
Hubble Trouble with Hakeem Oluseyi

So now what happened? So here's the deal, here's why I bring this up, because it's what is known as the scalar field. So when you think about the fields that you know of, they're like, oh, the electric field, I have a charge, it has an electric field. Magnetic field, I have a charge that's moving, it generates a magnetic field. Gravitational field, oh, there's this matter.

StarTalk Radio
Hubble Trouble with Hakeem Oluseyi

So now what happened? So here's the deal, here's why I bring this up, because it's what is known as the scalar field. So when you think about the fields that you know of, they're like, oh, the electric field, I have a charge, it has an electric field. Magnetic field, I have a charge that's moving, it generates a magnetic field. Gravitational field, oh, there's this matter.

StarTalk Radio
Hubble Trouble with Hakeem Oluseyi

So every field you know of, there is some source in matter. But then here come the particle fields. They're like, oh yeah, you know why every electron is identical? They don't say it this way, this is mine. No, every electron is identical. Same reason every C note, musical note is identical because they're not the real thing. The real thing is the string or the air that's vibrating, right?

StarTalk Radio
Hubble Trouble with Hakeem Oluseyi

So every field you know of, there is some source in matter. But then here come the particle fields. They're like, oh yeah, you know why every electron is identical? They don't say it this way, this is mine. No, every electron is identical. Same reason every C note, musical note is identical because they're not the real thing. The real thing is the string or the air that's vibrating, right?

StarTalk Radio
Hubble Trouble with Hakeem Oluseyi

So they invoke this idea of quantum fields. So the quantum field just permeates all of space time and is just there.

StarTalk Radio
Hubble Trouble with Hakeem Oluseyi

So they invoke this idea of quantum fields. So the quantum field just permeates all of space time and is just there.