Results 51 to 60 of about 4,163 (286)

Bounds on the bubble wall velocity

open access: yesJournal of High Energy Physics
Determining the bubble wall velocity in first-order phase transitions is a challenging task, requiring the solution of (coupled) equations of motion for the scalar field and Boltzmann equations for the particles in the plasma.
Wen-Yuan Ai   +2 more
doaj   +1 more source

Probing early-universe phase transitions with CMB spectral distortions [PDF]

open access: yes, 2014
Global, symmetry-breaking phase transitions in the early universe can generate scaling seed networks which lead to metric perturbations. The acoustic waves in the photon-baryon plasma sourced by these metric perturbations, when Silk damped, generate ...
M. Amin, D. Grin
semanticscholar   +1 more source

The role of histone modifications in transcription regulation upon DNA damage

open access: yesFEBS Letters, EarlyView.
This review discusses the critical role of histone modifications in regulating gene expression during the DNA damage response (DDR). By modulating chromatin structure and recruiting repair factors, these post‐translational modifications fine‐tune transcriptional programmes to maintain genomic stability.
Angelina Job Kolady, Siyao Wang
wiley   +1 more source

Particle shells from relativistic bubble walls

open access: yesJournal of High Energy Physics
Relativistic bubble walls from cosmological phase transitions (PT) necessarily accumulate expanding shells of particles. We systematically characterize shell properties, and identify and calculate the processes that prevent them from free streaming ...
Iason Baldes   +3 more
doaj   +1 more source

Bubble wall dynamics at the electroweak phase transition

open access: yesJournal of High Energy Physics, 2022
First order phase transitions could play a major role in the early universe, providing important phenomenological consequences, such as the production of gravitational waves and the generation of baryon asymmetry.
Stefania De Curtis   +4 more
doaj   +1 more source

Mechanisms of parasite‐mediated disruption of brain vessels

open access: yesFEBS Letters, EarlyView.
Parasites can affect the blood vessels of the brain, often causing serious neurological problems. This review explains how different parasites interact with and disrupt these vessels, what this means for brain health, and why these processes matter. Understanding these mechanisms may help us develop better ways to prevent or treat brain infections in ...
Leonor Loira   +3 more
wiley   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

How fast does the WallGo? A package for computing wall velocities in first-order phase transitions

open access: yesJournal of High Energy Physics
WallGo is an open-source software designed to compute the bubble wall velocity in first-order cosmological phase transitions. Additionally, it evaluates the energy budget available for generating gravitational waves.
Andreas Ekstedt   +6 more
doaj   +1 more source

Electroweak phase transition and entropy release in the early universe [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2018
Main text (10 pages, 1 figure)
Chaudhuri, A., Dolgov, A.
openaire   +2 more sources

Exploring multi-step electroweak phase transitions in the 2HDM+a\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\varve [PDF]

open access: yesThe European Physical Journal C
Multiple electroweak phase transitions occurring sequentially in the early universe can give rise to intriguing phenomenology, compared to the typical single-step electroweak phase transition.
Zonguo Si   +3 more
semanticscholar   +1 more source

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