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Gravitational Waves from the Non-Perturbative Decay of Condensates along Supersymmetric Flat Directions
Cosmology and Nongalactic Astrophysics · Submitted 16 Feb 2009
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We show that these gravity waves can be observable by upcoming experiments like Advanced LIGO and depend crucially on (i) the initial VEV of flat directions when they start to oscillate, (ii) their soft SUSY-breaking mass and (iii) the reheat temperature of the universe.
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The abstract, sentence by sentence
It has recently been shown that specific non-perturbative effects may lead to an explosive decay of flat direction condensates in supersymmetric theories. We confirm explicitly the efficiency of this process with lattice simulations: after few rotations of the condensates in their complex plane, most of their energy is quickly converted into inhomogeneous fluctuations. We then point out that this generates a gravitational wave background which depends on the inflaton sector and falls in the Hz-kHz frequency range today. We compute the resulting spectrum and study how it depends on the parameters. We show that these gravity waves can be observable by upcoming experiments like Advanced LIGO and depend crucially on (i) the initial VEV of flat directions when they start to oscillate, (ii) their soft SUSY-breaking mass and (iii) the reheat temperature of the universe. This signal could open a new observational window on inflation and low-energy supersymmetry.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | It has recently been shown that specific non-perturbative effects may lead to an explosive decay of flat direction condensates in supersymmetric theories. | background 1.00 | 0.04 | 0.05 | hedged possibility 0.84 |
| s1 | We confirm explicitly the efficiency of this process with lattice simulations: after few rotations of the condensates in their complex plane, most of their energy is quickly converted into inhomogeneous fluctuations. | result 0.77 | 0.97 | 0.09 | asserted 1.00 |
| s2 | We then point out that this generates a gravitational wave background which depends on the inflaton sector and falls in the Hz-kHz frequency range today. | result 0.88 | 0.82 | 0.30 | asserted 1.00 |
| s3 | We compute the resulting spectrum and study how it depends on the parameters. | contribution 0.94 | 0.95 | 0.06 | asserted 0.96 |
| s4 | We show that these gravity waves can be observable by upcoming experiments like Advanced LIGO and depend crucially on (i) the initial VEV of flat directions when they start to oscillate, (ii) their soft SUSY-breaking mass and (iii) the reheat temperature of the universe. | result 0.88 | 0.93 | 0.64 | asserted 0.78 |
| s5 | This signal could open a new observational window on inflation and low-energy supersymmetry. | interpretation 1.00 | 0.25 | 0.34 | hedged possibility 1.00 |
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The paper
Original abstract
It has recently been shown that specific non-perturbative effects may lead to an explosive decay of flat direction condensates in supersymmetric theories. We confirm explicitly the efficiency of this process with lattice simulations: after few rotations of the condensates in their complex plane, most of their energy is quickly converted into inhomogeneous fluctuations. We then point out that this generates a gravitational wave background which depends on the inflaton sector and falls in the Hz-kHz frequency range today. We compute the resulting spectrum and study how it depends on the parameters. We show that these gravity waves can be observable by upcoming experiments like Advanced LIGO and depend crucially on (i) the initial VEV of flat directions when they start to oscillate, (ii) their soft SUSY-breaking mass and (iii) the reheat temperature of the universe. This signal could open a new observational window on inflation and low-energy supersymmetry.
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References
How the literature uses it
6 arXiv papers cite this in 8 sentences
Papers citing it · 6 sentences without a confident label
Cites it as background 2 papers
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[Other mechanisms for the generation of GW which are alternative to the standard vacuum production, but are still embedded in the inflationary scenario include the use of spectator fields with low sound speed [ref] , the modification of the dispersion relation of the tensor modes in the effective-field-theory approach [ref] , varying sound speed of the tensor [ref] , the strong tachyonic growth of chiral tensor modes in the chromo-natural inflation [ref] and in the gauge-flation model [ref] , and preheating [ref] (in this last case the produced GW signal is typically at scales much shorter than the CMB ones).
Scale-dependent gravitational waves from a rolling axion · Introduction · 1.00
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They can be generated by violent events in the early universe such as bubble collisions [ref] , cosmic strings [ref] , preheating after inflation [ref] , or parametric decay of supersymmetric condensates [ref] .
Constraints on primordial density perturbations from induced gravitational waves · Introduction · 0.92
What it cites · 1 sentence without a confident label
Uses the method or tool of 1 paper
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We perform lattice simulations with the parallel code ClusterEasy [ref] and we compute the resulting GW spectrum with the method of [ref] , extended here to take into account the expansion of the universe.
LATTICEEASY: A Program for Lattice Simulations of Scalar Fields in an Expanding Universe · Introduction · 0.96
Cites as background 1 paper
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Gravity wave (GW) experiments could provide unique informations about high-energy phenomena in the early universe, such as inflation, preheating after inflation, cosmic strings and first order phase transitions [ref] .
TASI Lectures on Gravitational Waves from the Early Universe · Introduction · 0.99
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