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2022-04-27: How the Higgs Mechanism Give Things Mass

  • 07:33: ... then the field just sits at the lowest  point. We call that the vacuum state. ...
  • 11:37: ... has reached the base of this  new minimum we have a new stable vacuum state. ...
  • 11:56: ... two reasons. The first is that the lowest   energy state - the vacuum state - isn’t where the  field strength is zero. This is called a ...
  • 12:26: ... weird thing: there’s not just a single  vacuum state - there’s a rin g of valid states.   The universe will just ...
  • 14:54: ... this happens because of the non-zero  vacuum state of the Higgs field. That little   bit of Higgsiness everywhere ...

2022-02-23: Are Cosmic Strings Cracks in the Universe?

  • 00:58: ... will always drop to the nearest minimum  in energy - this is the vacuum state of the field.   In the early universe, the Higgs field ...
  • 04:51: ... the universe, the Higgs field started falling  towards the new vacuum state - we call this vacuum   decay. Neighboring points in a field ...

2021-08-18: How Vacuum Decay Would Destroy The Universe

  • 08:30: ... there may be weird fields within string theory that exist in false vacuum states.   The decay of those could rewrite the  laws of physics in far more ...

2021-05-25: What If (Tiny) Black Holes Are Everywhere?

  • 02:06: ... - to prove that if an event horizon forms in a vacuum, then the vacuum states of the quantum fields have to be ...

2020-05-11: How Luminiferous Aether Led to Relativity

  • 12:25: ... Paul Dirac suggested that a “particulate aether” could explain the near vacuum state of spacetime in which quantum physicists believe particle pairs are ...

2019-09-30: How Many Universes Are There?

  • 07:38: More than 10^500 possible vacuum states – probably a lot more.
  • 08:01: We don’t know why our universe has the particular string vacuum state that it does.
  • 08:24: All different vacuum states exist, and our universe necessarily has one that leads to life-friendly particles.

2019-08-19: What Happened Before the Big Bang?

  • 03:43: Guth's idea is that there's a local minimum in potential energy that allows the inflaton field to get stuck in a false vacuum state.
  • 06:17: As the universe cools, different vacuum states can appear possibly trapping the inflaton field.

2019-08-06: What Caused the Big Bang?

  • 06:29: And by the way, the lowest energy state of a field is called its vacuum state.
  • 08:16: ... field remains in a vacuum state that doesn't matches temperature - in the same way that water can become ...
  • 08:51: ... on that other side, it sees a deeper truer minimum - perhaps the true vacuum state - and suddenly starts to lose energy again racing towards that ...
  • 09:30: The inflaton field also undergoes a phase transition towards the new vacuum state.

2019-04-03: The Edge of an Infinite Universe

  • 08:37: He found that two “infinitely distant” regions could not both be in a perfect vacuum state if a black hole lay between them.

2018-03-15: Hawking Radiation

  • 03:51: ... a quantum field is in a vacuum state, there's a balance between positive and negative frequency modes, which ...
  • 05:21: Hawking imagined a simple quantum field tracing this path, a field that is in a perfect vacuum state before the formation of the black hole.
  • 07:04: With the loss of certain fundamental modes, the vacuum state must be constructed from the remaining modes.

2018-01-24: The End of the Habitable Zone

  • 11:14: The vacuum state of all fields are redefined in the vicinity of a black hole or for an accelerating observer.
  • 12:38: In order for the two states to be consistent, the after vacuum state has an excess of positive energy modes.

2018-01-17: Horizon Radiation

  • 06:59: Now it starts out with no oscillations, analogous to the vacuum state in quantum field theory.

2017-11-02: The Vacuum Catastrophe

  • 01:45: However, even the lowest possible energy oscillation, the one corresponding to the absence of particles, the so-called vacuum state, has some energy.
  • 01:55: ... satisfy the Heisenberg uncertainty principle, the vacuum state of any fuel oscillation must be half of the tiny Planck constant times ...

2017-10-19: The Nature of Nothing

  • 03:21: We call this the vacuum state of the field.
  • 03:25: Inside a perfect vacuum, all of the field at all locations should be in the vacuum state, exactly zero energy at all times.
  • 04:07: In a vacuum, the most likely state in that blur is the zero energy vacuum state.
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