Results 41 to 50 of about 22,084 (265)

Non-linearities in cosmological bubble wall dynamics

open access: yesJournal of High Energy Physics
A 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

Inflection-point inflation and dark matter redux

open access: yesJournal of High Energy Physics, 2022
We investigate for viable models of inflation that can successfully produce dark matter (DM) from inflaton decay process, satisfying all the constraints from Cosmic Microwave Background (CMB) and from some other observations.
Anish Ghoshal   +4 more
doaj   +1 more source

Directed evolution of enzymes at the crossroads of tradition and innovation

open access: yesFEBS Open Bio, EarlyView.
An iterative cycle of data‐driven enzyme optimization comprising four stages: genetic diversification of a template enzyme, expression of protein variants, high‐throughput evaluation, and machine‐learning‐guided redesign of the next variant library.
Maria Tomkova   +2 more
wiley   +1 more source

Bubble friction in symmetry-restoring transitions

open access: yesJournal of High Energy Physics
In 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

From energy provision to protein synthesis: Tunnelling nanotubes as mediators of intercellular metabolic cooperation in cancer

open access: yesFEBS Open Bio, EarlyView.
The cytoskeleton‐mediated transport of mitochondria via tunnelling nanotubes restores respiration, increases ATP production, rescues cells from apoptosis, activates the AKT/mTOR signalling pathway, promotes cell migration and invasiveness, contributes to cancer progression and treatment resistance.
Stanislava Martínková, Jan Trnka
wiley   +1 more source

The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics [PDF]

open access: yesPhysics of the Dark Universe
The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades. This concordance model is constructed by a universal cosmological constant
E. D. Valentino   +499 more
semanticscholar   +1 more source

From friction scaling to an efficient method for estimating bubble wall velocity

open access: yesJournal of High Energy Physics
We 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

Protocol for quantifying miRNA trafficking across the endosomal membrane

open access: yesFEBS Open Bio, EarlyView.
An in vitro protocol measures miRNA uptake into endosomes isolated from mammalian cell extracts, which are free of subcellular contaminants. Performed at 37 °C in the presence of ATP, it ensures the import of single‐stranded miRNA into the endosomal lumen.
Syamantak Ghosh   +2 more
wiley   +1 more source

Type-III seesaw in non-holomorphic modular symmetry and leptogenesis

open access: yesJournal of High Energy Physics
Recently, Qu and Ding, have proposed a formalism where modular invariance is extended to non-supersymmetric scenario considering Yukawa couplings as non-holomorphic functions of modules field τ. Adopting this formalism in this work, we propose a Type-III
Priya   +3 more
doaj   +1 more source

Bubble nucleation and quantum initial conditions in classical statistical simulations

open access: yesJournal of High Energy Physics, 2022
Classical-statistical lattice simulations provide a useful approximation to out-of-equilibrium quantum field theory, but only for systems exhibiting large occupation numbers, and only for phenomena that are not intrinsically quantum mechanical in nature.
Anders Tranberg, Gerhard Ungersbäck
doaj   +1 more source
physics
phase transitions in the early universe
particle nature of dark matter
fos: physical sciences
high energy physics - phenomenology
high energy physics - phenomenology hep-ph
baryo-and leptogenesis
axions and alps
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