Can false vacuum decay (temporarily) to a new more stable false …
Mar 27, 2022 · I want to know if theoretically a false vacuum collapse/decay could lead to a new false vacuum state - a state that is (presumably more) metastable but not a true vacuum state. I assume that if this were possible then the new false state would still have the potential to further decay to a true vacuum at some future point.
general relativity - If vacuum decay was somehow triggered inside …
Nov 14, 2021 · If vacuum decay is triggered, it will spread (at maximum) at the speed of light. But the spacetime inside a black hole is causally disconnected from the space outside. Nothing that happens inside the event horizon can influence anything that happens outside. Therefore it can be assumed that a vacuum decay cannot escape from inside of a black hole.
Are we living in a false vacuum? Is there any way to tell?
Jan 31, 2011 · I was thinking of the noted 1980 paper by Sidney Coleman and Frank de Luccia--"Gravitational effects of and on vacuum decay"-- about metastable vacuum states that could tunnel to a lower energy "true vacuum" with catastrophic results. I suspect the answer is that if our vacuum is a false one, we wouldn't "see" the true one til it hit us.
What would vacuum decay in an expanding universe be like?
May 16, 2017 · In an accelerating expanding universe vacuum decay can be merely a local disaster. This is because there is a cosmological event horizon: given a certain event there are points too far away to ever be reached by a light signal (or vacuum decay). The distance to this horizon is time dependent (today about 5 Gpc).
Why the photon can't produce electron and positron in space or …
Nov 1, 2015 · Show me that your process can be traced in the vacuum. As per your answer look at the final equation. Since processes in the vacuum are not traceable the equation should read $2\Delta Pc^2\cos^2$ greater than or equal to $[\hbar/2\Delta t]^2$. $2\Delta Pc^2 = (Energy)^2$ which for equality leads to $\cos^2 = 1.
vacuum - Why do scientists think Higgs fields is metastable?
A metastable vacuum for the Higgs boson implies that it is possible, and in fact inevitable, that a vacuum decay takes place with catastrophic consequences for the Universe. The metastability of the Higgs vacuum is especially significant for cosmology, because there are many mechanisms that could have triggered the decay of the electroweak ...
How do instantons cause vacuum decay? - Physics Stack Exchange
My question is: how are these two ideas/definitions of instantons related? All of the simples examples that I have looked at of nontrivial vacuum solutions involve solitons, vortices, or hedgehogs, which as far as I know cannot mediate decay from a metastable vacuum.
Likelihood of vacuum decay event - Physics Stack Exchange
Aug 7, 2019 · What I wonder is how this current ballpark in terms of stability (or decay likelihood) looks like. Let‘s say we live in the least stable universe that‘s possible given the current measuring inaccuracy, what would be the likelihood of a vacuum decay event, say within a one cubic light year over the course of 1 billion years?
quantum field theory - Can our universe be a true vacuum bubble ...
Mar 10, 2019 · Note that the energy E is higher than that in the true vacuum or ground state, but there is a barrier preventing the field from classically rolling down to the true vacuum. Therefore, the transition to the true vacuum must be stimulated by the creation of high-energy particles or through quantum-mechanical tunneling.
thermodynamics - Why hasn't the false vacuum collapsed yet?
Jan 29, 2020 · 1) The universe isn’t old enough yet There are a number of calculations of the decay rate or lifetime of the electroweak vacuum, like Chigusa, 2018 and Andreassen, 2018, and they conclude that the Universe is not old enough to have decayed, i.e. predicted lifetime around 10^161 years compared to current lifetime of around $10^9$ years.