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QCD-induced Electroweak Phase Transition

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TLDR
In this article, it was shown that the QCD condensates which subsequently form give an additional contribution to the radion/dilaton potential, an effect which had been ignored so far, which significantly reduces the barrier in the potential and allows the phase transition to complete in a substantially larger region of parameter space.
Abstract
Phase transitions associated with nearly conformal dynamics are known to lead to significant supercooling. A notorious example is the phase transition in Randall-Sundrum models or their CFT duals. In fact, it was found that the phase transition in this case is first-order and the tunneling probability for the radion/dilaton is so small that the system typically remains trapped in the false vacuum and the phase transition never completes. The universe then keeps expanding and cooling. Eventually the temperature drops below the QCD scale. We show that the QCD condensates which subsequently form give an additional contribution to the radion/dilaton potential, an effect which had been ignored so far. This significantly reduces the barrier in the potential and allows the phase transition to complete in a substantially larger region of parameter space. Due to the supercooling, electroweak symmetry is then broken simultaneously. This class of models therefore naturally leads to an electroweak phase transition taking place at or below QCD temperatures, with interesting cosmological implications and signatures.

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On the maximal strength of a first-order electroweak phase transition and its gravitational wave signal

TL;DR: In this paper, the authors studied the conditions for successful bubble percolation and completion of the electroweak phase transition in theories beyond the Standard Model featuring polynominal potentials, and showed that these conditions set a lower bound on the temperature of the transition.
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New experimental approaches in the search for axion-like particles

TL;DR: In this paper, a review of axion-like particle detection is presented, focusing on the new experimental approaches and their complementarity, but also reviewing the most relevant recent results from the consolidated strategies and the prospects of new generation experiments under consideration in the field.
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Gravitational wave energy budget in strongly supercooled phase transitions

TL;DR: In this paper, the authors derived efficiency factors for the production of gravitational waves through bubble collisions and plasma-related sources in strong phase transitions, and found the conditions under which the bubble collisions can contribute significantly to the signal.
References
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Journal ArticleDOI

Review of Particle Physics

Claude Amsler, +176 more
- 01 Jul 1996 - 
TL;DR: This biennial Review summarizes much of particle physics, using data from previous editions.
Journal ArticleDOI

Large Mass Hierarchy from a Small Extra Dimension

TL;DR: In this paper, the weak scale is generated from the Planck scale through an exponential hierarchy, but this exponential arises not from gauge interactions but from the background metric, which is a slice of spacetime.
Journal ArticleDOI

QCD and resonance physics. theoretical foundations

TL;DR: In this paper, a systematic study is made of the non-perturbative effects in quantum chromodynamics, where the basic object is the two-point functions of various currents and the terms of this series are shown to be of two distinct types.
Journal ArticleDOI

Fate of the false vacuum: Semiclassical theory

TL;DR: In this article, the decay of a false vacuum in a single scalar field with nonderivative interactions is studied. But the decay is not restricted to the case of singular fields.
Journal ArticleDOI

The Fate of the False Vacuum. 1. Semiclassical Theory

Sidney Coleman
- 01 Jan 1977 - 
TL;DR: In this paper, the decay of a false vacuum in a single scalar field with nonderivative interactions is studied. But the decay is not restricted to a single field theory.
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