Results 61 to 70 of about 7,077 (267)
Construction of inflationary scenarios with the Gauss–Bonnet term and nonminimal coupling
European Physical Journal C: Particles and Fields, 2021 Inflationary models with a scalar field nonminimally coupled both with the Ricci scalar and with the Gauss–Bonnet term are studied. We propose the way of generalization of inflationary scenarios with the Gauss–Bonnet term and a scalar field minimally ...
Ekaterina O. Pozdeeva, Sergey Yu. Vernov
doaj +1 more source
A topic review on probing primordial black hole dark matter with scalar induced gravitational waves
iScience, 2021 Summary: Primordial black holes (PBHs) might form from the collapse of over-densed regions generated by large scalar curvature perturbations in the radiation dominated era.
Chen Yuan, Qing-Guo Huang
doaj +1 more source
Scalar field perturbations in Hořava-Lifshitz cosmology [PDF]
Journal of Cosmology and Astroparticle Physics, 2010 Revtex4, no figures. Version published in JCAP 03, 013 (2010).
Wang, Anzhong +2 more
openaire +4 more sources
FEBS Letters, EarlyView.Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley +1 more source
On the decoherence of primordial gravitons
Journal of High Energy Physics, 2023 It is well-known that the primordial scalar curvature and tensor perturbations, ζ and γ ij , are conserved on super-horizon scales in minimal inflation models. However, their wave functional has a rapidly oscillating phase which is slow-roll unsuppressed,
Sirui Ning, Chon Man Sou, Yi Wang
doaj +1 more source
Scalar Cosmological Perturbations on the Brane
Ukrainian Journal of Physics, 2012 We derive a full system of differential equations describing the evolution of scalar cosmological perturbations on the brane in the general case where the action of the model contains the induced curvature, as well as the cosmological constants in the bulk and on the brane.
Viznyuk, A.V., Shtanov, Yu.V.
openaire +3 more sources
CMB polarization by the asymmetric template of scalar perturbations
The European Physical Journal C, 2023 AbstractInspired by a dipole asymmetric template for the CMB temperature map in the primordial scalar fluctuations observed by Planck at a large scale, we examine the contribution of a similar template for power asymmetry in modifying the linear polarization pattern of CMB.
Jafar Khodagholizadeh +2 more
openaire +3 more sources
FEBS Letters, EarlyView.Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure +3 more
wiley +1 more source
The human gut microbiome across the life course
FEBS Letters, EarlyView.Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero +4 more
wiley +1 more source
Scattering of Ricci scalar perturbations from Schwarzschild black holes in modified gravity
European Physical Journal C: Particles and Fields, 2017 It has already been shown that the gravitational waves emitted from a Schwarzschild black hole in f(R) gravity have no signatures of the modification of gravity from General Relativity, as the Regge–Wheeler equation remains invariant.
Dan B. Sibandze +4 more
doaj +1 more source