# False-vacuum decay in generalized extended inflation

Publisher: Fermi National Accelerator Laboratory, Publisher: National Aeronautics and Space Administration in [Batavia, Ill.], [Washington D.C

Written in English

## Subjects:

• Inflationary universe.

## Edition Notes

A false vacuum collapsed down to a true one, and the matter and energy of our universe was the result of its collapse. Advertisement It's also possible that the collapsing false vacuum didn't. What the Higgs field has to do with vacuum decay. This graph shows the energy states of a hypothetical quantum field. Being in a false vacuum is a lot like a ball being stuck on a valley on the.   In the most plausible, self-consistent inflationary models, inflation is eternal, with an infinite number of island (pocket, bubble) universes (hereinafter, simply, universes) emerging through the decay of small regions of the primordial "sea" of false vacuum and comprising the infinite multiverse [87–89](Fig. 3A). The Curve is represented by two axes, the x-axis which represents the time and the y-axis which represents the signal value of either pressure, vacuum, or force – depending on whether you are conducting a pressure decay, a vacuum decay, or a force decay. The principle is the same.

In Hawking’s book, once the Higgs Field becomes metastable, the vacuum decay bubble will emerge. Being at a high energy state, it will quickly move to consume everything at a low energy state. @article{osti_, title = {An anisotropic universe due to dimension-changing vacuum decay}, author = {Scargill, James H.C., E-mail: [email protected]}, abstractNote = {In this paper we consider the question of observational signatures of a false vacuum decay event in the early universe followed by a period of inflation; in particular, motivated by the string landscape, we. Inflation after false vacuum decay: new evidence from BICEP2. Journal Article Bousso, Raphael; Harlow, Daniel; Senatore, Leonardo - Journal of Cosmology and Astroparticle Physics. Last year we argued that if slow-roll inflation followed the decay of a false vacuum in a large landscape, the steepening of the scalar potential between the. In this picture of the universe, Einstein’s cosmological constant takes on a whole new meaning since it now represents a definite physical concept ; It is simply a measure of the energy difference between the true and false vacuum states (‘B’ and ‘A’ in Figures 1 and .

Inflation—the general rise in the prices of goods and services—is one of the differentiating characteristics of the U.S. economy in the post-World War II era. Except for , , and , the prices of goods and services have, on average, risen each year since The. Models of inflation suggest that our current patch of the universe could have been created as a nucleation bubble from a phase of false vacuum eternal inflation. If additional bubbles are produced, then it is possible that one of them intersected our past lightcone at the time of decoupling, imprinting a disk-shaped signal in the CMB. analogous to the scenario of the origin of universes in the eternal inflation version of modern cosmology. Under this model, universes like ours emerge in the infinite multiverse when the eternal process of exponential expansion, known as inflation, ceases in a particular region as a result of false vacuum decay, a first order phase transition. In the eternal inflation theory, which is a variant of the cosmic inflation theory, the multiverse or space as a whole is stretching and will continue doing so forever, but some regions of space stop stretching and form distinct bubbles (like gas pockets in a loaf of rising bread). Such bubbles are embryonic level I .

## Recent

We study false-vacuum decay in the context of generalized extended inflationary theories, and compute the bubble nucleation rates for these theories in the limit of G N →0. We find that the time dependence of the nucleation rate can be exponentially strong through the time dependence of the Jordan-Brans-Dicke field.

This can have a pronounced effect on whether extended inflation can Cited by: 9. Abstract. We study false-vacuum decay in context of generalized extended inflationary theories, and compute the bubble nucleation rates for these theories in the limit of G N → 0.

We find that the time dependence of the nucleation rate can be exponentially strong through the time dependence of the Jordan—Brans—Dicke field. This can have a pronounced effect on whether extended inflation Cited by: 9.

We study false-vacuum decay in the context of generalized extended inflationary theories, and compute the bubble nucleation rates for these theories in the limit of G N -->0. We find that the time dependence of the nucleation rate can be exponentially strong through the time dependence of the Jordan-Brans-Dicke field.

This can have a pronounced effect on whether extended inflation can be. False-vacuum decay was studied in context of generalized extended inflationary theories, and the bubble nucleation rates was computed for these theories in the limit of G(sub N) yields 0.

It was found that the time dependence of the nucleation rate can be exponentially strong through the time dependence of the Jordan-Brans-Dicke field. This can have a pronounced effect on whether extended Cited by: 9.

False-vacuum decay was studied in context of generalized extended inflationary theories, and the bubble nucleation rates was computed for these theories in the limit of G(sub N) yields 0.

It was found that the time dependence of the nucleation rate can be exponentially strong through the time dependence of the Jordan-Brans-Dicke field. Because of the so-called graceful exit problem, the senario was replaced by the new or chaotic inflation scenario unrelated to the quantum tunneling phenomena!'1 But recently the extended inflation scenario which require the notion about the false vacuum decay prosess was.

Inflation is terminated by a non-equilibrium process which finally leads to a thermal state. We study the onset of this transition in a class of hybrid inflation models. The exponential growth of tachyonic modes leads to decoherence and spinodal decomposition. We compute the decoherence time, the spinodal time, the size of the formed domains and the homogeneous classical fields within a single.

Figure 2. The decay of our parent vacuum followed by slow-roll in ation. The dashed line indicates a tunneling event from the high energy false vacuum, after which the eld classically rolls down the hill.

There is an initial period of curvature domination, where aˇt, during which the eld does not travel very much.

This ends when 1. In quantum field theory, False-vacuum decay in generalized extended inflation book false vacuum is a hypothetical vacuum that is not actively decaying, but somewhat yet not entirely stable ("metastable").

It may last for a very long time in that state (a property known as metastability), and might eventually move to a more stable state, an event known as vacuum most common suggestion of how such a change might happen is called bubble.

This is an adjustable parameter as far as new inflation is concerned, but ##m## has to be small compared to the Hubble constant or else the model does not lead to enough inflation.

So, for parameters that are chosen to make the inflationary model work, the exponential decay of the false vacuum is slower than the exponential expansion. BBN and CMB constraints on universal lepton asymmetry, quintessential inflation, and brane world cosmology, Nuclear Physics A,() Dipak Munshi, and Yun Wang, How Sensitive Are Weak Lensing Statistics to Dark Energy Content.

According to inflation theory, there first was a scalar quantum field in a false-vacuum (the inflaton). The whole inflationary expansion only got started when the inflaton decayed to its true vacuum. But then people say that the dark energy that causes the universe to expand today, could be just a constant scalar field without any decaying.

The Inflaton Sector of Extended Inflation. False-Vacuum Decay in Generalized Extended Inflation. *immediately available upon purchase as print book shipments may be delayed due to the COVID crisis.

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$\begingroup$ Vacuum decay is basically synonymous with "bubble of true vacuum forms, and conquers the universe". The bubble spreads because it is at lower energy and everything it touches, relaxes into the lower-energy state of the fundamental fields that it has made possible.

It turns out we live in a false vacuum. But why doesn't it decay easily. So I've heard and seen graphs (see Fig.2 on page 3 there) that with over 2-sigma confidence, we're living in a false (electroweak) vacuum, and the barrier of potential separating us from the vacuum metastability event is on the order of 10 10 GeV (or just several Joules).

False Vacuum Decay after Inflation. By T. Asaka, W. Buchmüller and L. Covi. Abstract. Inflation is terminated by a non-equilibrium process which finally leads to a thermal state. We study the onset of this transition in a class of hybrid inflation models. The exponential growth of tachyonic modes leads to decoherence and spinodal decomposition.

Inflation: Selected full-text books and articles Monetary Policy, Inflation, and the Business Cycle: An Introduction to the New Keynesian Framework By Jordi Galí Princeton University Press,   Hence, for the model here analysed, the decay rate is given by the transition from the false vacuum, located at, to the true vacuum, at.

Note that before reaching the point, the decay process rolls through the other two metastable potentials, located at and. Hence, the decay rate from the false vacuum to the true vacuum becomes. CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Inflation is terminated by a non-equilibrium process which finally leads to a thermal state.

We study the onset of this transition in a class of hybrid inflation models. The exponential growth of tachyonic modes leads to decoherence and spinodal decomposition. We compute the decoherence time, the spinodal time, the. False vacuum in quantum field theory, is a metastable sector of space.

A false vacuum appears to be a perturbative vacuum but is unstable to instanton effects which may tunnel to a lower energy state. This tunneling can be caused by quantum fluctuations or the creation of high energy put, the false vacuum is a local minimum, but not the lowest energy state, even though it may.

Physicist: The False Vacuum is just another item on the long list of things to worry about, that are not worth worrying about, and that nobody can do anything about. If you have any other worries, worry about those first. In any physical system you’ll find that there’s an energy “ground state” that the system tries to approach.

For example, if you pour water into a bathtub there are a. Inflation occurred at energies too low to tip us over the edge, inflation did not take place at all, or the Universe is more stable than the calculations suggest. “Vacuum decay is the ultimate. Spontaneous and induced false vacuum decay by Matthew Citron Using a semiclassical approximation the probability of spontaneous false vacuum decay in the QM and QFT case is found following the work of Coleman.

It is then shown how this is extended such that the suppression exponent for decay via particle collisions can be found. Part of the Astrophysics and Space Science Library book series (ASSL, volume ) Log in to check access.

Buy eBook. USD The Inflaton Sector of Extended Inflation. Edward W. Kolb. Pages Inflation in Generalized Einstein Theories False-Vacuum Decay in Generalized Extended Inflation. Richard Holman. Pages Jun'ichi Yokoyama's research works with 7, citations and 2, reads, including: On catalyzed vacuum decay around a radiating black hole and the crisis of the electroweak vacuum.

To give you a simple and silly example of false vacuum. Just look around you. If you remove all solid objects, you still have air which exists and keeps you from a true vacuum.

You know that the air is there if you move your hand quickly back a. The quantum evolution of a model of the universe with account of two scalar fields ({\it dilaton} and {\it inflaton}) is considered.

For this case, the close. An illustration of an open book. Books. An illustration of two cells of a film strip. Video. An illustration of an audio speaker. Audio. An illustration of a " floppy disk.

Software. An illustration of two photographs. False Vacuum Inflation with Einstein Gravity Item Preview remove-circle. The energy density is zero if = t, so this condition corresponds to the ordinary vacuum of empty this context it is usually called the "true" vacuum.

The state in which the scalar field is near = 0, at the top of the plateau, is called the "false" vacuum. If the plateau of the energy density diagram is flat enough, it can take a very long time, by early Universe standards, for the.

Based on this idea false vacuum decay became a central point of A. Guth inflation theory (). At that time, Coleman and de Luccia were the first to solve the problem of false vacuum decay in a. T1 - Particle decay in false vacuum.

AU - Gorsky, A. AU - Voloshin, M. B. PY - /1/ Y1 - /1/ N2 - We revisit the problem of decay of a metastable vacuum induced by the presence of a particle. For the bosons of the aœmaster fielda the problem is solved in any number of dimensions in terms of the spontaneous decay rate of the false.Contact with stochastic inflation is established by deriving the Langevin equation for the coarse-grained expectation value of the inflaton field to one-loop order in this model.

We find that the noise is gaussian and correlated (colored) and its correlations are related to the dissipative (decay'') kernel via a generalized fluctuation.The past two decades have seen transformative advances in cosmology and string theory.

Observations of the cosmic microwave background have revealed strong evidence for inflationary expansion in the very early universe, while new insights about compactifications of string theory have led to a deeper understanding of inflation in a framework that unifies quantum mechanics and general relativity.