Results 51 to 60 of about 149,223,535 (289)
Non-linearities in cosmological bubble wall dynamics
Journal of High Energy PhysicsA precise modelling of the dynamics of bubbles nucleated during first-order phase transitions in the early Universe is pivotal for a quantitative determination of various cosmic relics, including the stochastic background of gravitational waves.
Stefania De Curtis +4 more
doaj +1 more source
FIRST-ORDER PHASE TRANSITIONS IN AN EARLY-UNIVERSE ENVIRONMENT [PDF]
COSMO-99, 2000 4 pages, 2 figures, to appear in Proceedings of the International Workshop on Particle Physics and the Early Universe (COSMO 99), Trieste, Italy, September 27 - October 2 ...
openaire +2 more sources
Design and analysis strategies for robust microbiome ageing research
FEBS Letters, EarlyView.The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik +5 more
wiley +1 more source
Bubble friction in symmetry-restoring transitions
Journal of High Energy PhysicsIn standard (symmetry-breaking) first-order phase transitions, the frictional pressure on expanding bubble walls can be dominated by transition radiation — the emission of a gauge boson with phase-dependent masses as particles present in the thermal ...
Andrew J. Long +2 more
doaj +1 more source
PBH-infused seesaw origin of matter and unique gravitational waves
Journal of High Energy Physics, 2023 The Standard Model, extended with three right-handed (RH) neutrinos, is the simplest model that can explain light neutrino masses, the baryon asymmetry of the Universe, and dark matter (DM).
Debasish Borah +3 more
doaj +1 more source
Reconstructing enzyme evolution by protein engineering
FEBS Letters, EarlyView.Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler +2 more
wiley +1 more source
From friction scaling to an efficient method for estimating bubble wall velocity
Journal of High Energy PhysicsWe present a unified description of first-order cosmological phase transition dynamics that links the phenomenological friction model employed in hydrodynamic simulations to the microscopic treatment based on Boltzmann equations. We derive an approximate
Tomasz Krajewski +4 more
doaj +1 more source
Journal of High Energy Physics, 2023 We discuss the dynamics of expanding bubble walls in the presence of massive dark photons whose mass changes as they cross the wall. For sufficiently thin walls, we show that there exists a transient kinematic regime characterized by a constant ...
Isabel Garcia Garcia +2 more
doaj +1 more source
Conserved binding mode but diverse interfaces of MreC‐PBP2 interactions
FEBS Letters, EarlyView.The crystal structure of abMreC reveals a conserved two β‐barrel architecture and provides structural insights into its role within the bacterial elongasome. The abMreC–abPBP2 complex model identifies the molecular basis of MreC‐mediated PBP2 recognition, contributing to the regulation of peptidoglycan synthesis.
Hyunseok Jang +4 more
wiley +1 more source
Phase transitions and metastable states in TIGaSe2
, 2003 The results of measurements of the dielectric constant of TlGaSe2 in temperature range of successive phase transitions are presented. An anomaly in the temperature dependence of the real part of dielectric constant in TlGaSe2 has been observed at about ...
Şentürk, Erdoğan
core +1 more source