Results 71 to 80 of about 9,742,280 (331)
Two scalar field cosmology: Conservation laws and exact solutions [PDF]
, 2014 We consider the two scalar field cosmology in a FRW spatially flat spacetime where the scalar fields interact both in the kinetic part and the potential. We apply the Noether point symmetries in order to define the interaction of the scalar fields.
A. Paliathanasis, M. Tsamparlis
semanticscholar +1 more source
Time-periodic solutions in an Einstein AdS-massless-scalar-field system. [PDF]
Physical Review Letters, 2013 We construct time-periodic solutions for a system of a self-gravitating massless scalar field, with a negative cosmological constant, in d+1 spacetime dimensions at spherical symmetry, both perturbatively and numerically.
M. Maliborski, A. Rostworowski
semanticscholar +1 more source
miRNA‐29 regulates epidermal and mesenchymal functions in skin repair
FEBS Letters, EarlyView.miRNA‐29 inhibits cell‐to‐cell and cell‐to‐matrix adhesion by silencing mRNA targets. Adhesion is controlled by complex interactions between many types of molecules coded by mRNAs. This is crucial for keeping together the layers of the skin and for regenerating the skin after wounding.
Lalitha Thiagarajan +10 more
wiley +1 more source
Einstein-aether theory in Weyl integrable geometry
European Physical Journal C: Particles and Fields, 2020 We study the Einstein-aether theory in Weyl integrable geometry. The scalar field which defines the Weyl affine connection is introduced in the gravitational field equation.
Andronikos Paliathanasis +2 more
doaj +1 more source
A late time acceleration of the universe with two scalar fields : many possibilities [PDF]
, 2006 In the present work, an attempt has been made to explain the recent cosmic acceleration with two mutually interacting scalar fields, one being the Brans-Dicke scalar field and the other a quintessence scalar field.
Coles P. +5 more
core +2 more sources
FEBS Letters, EarlyView.Interaction extracellular vesicles (iEVs) are hybrid vesicles formed through host‐pathogen communication. They facilitate immune evasion, transfer pathogens' molecules, increase host cell uptake, and enhance virulence. This Perspective article illustrates the multifunctional roles of iEVs and highlights their emerging relevance in infection dynamics ...
Bruna Sabatke +2 more
wiley +1 more source
Zero-dimensional models for gravitational and scalar QED decoherence
New Journal of Physics, 2022 We investigate the dynamics of two quantum mechanical oscillator system–bath toy models obtained by truncating to zero spatial dimensions linearized gravity coupled to a massive scalar field and scalar quantum electrodynamics (QED).
Qidong Xu, M P Blencowe
doaj +1 more source
ϕ-modes of neutron stars in a massless scalar–tensor theory
Frontiers in Astronomy and Space Sciences, 2022 Scalar–tensor theories allow for a rich spectrum of quasinormal modes of neutron stars. The presence of the scalar field allows for polar monopole and dipole radiation, as well as for additional higher multipole modes led by the scalar field.
Jose Luis Blázquez-Salcedo +4 more
doaj +1 more source
FEBS Letters, EarlyView.B cells sense external mechanical forces and convert them into biochemical signals through mechanotransduction. Understanding how malignant B cells respond to physical stimuli represents a groundbreaking area of research. This review examines the key mechano‐related molecules and pathways in B lymphocytes, highlights the most relevant techniques to ...
Marta Sampietro +2 more
wiley +1 more source
Dynamic generation or removal of a scalar hair
Journal of High Energy Physics, 2023 We study dynamic processes through which the scalar hair of black holes is generated or detached in a theory with a scalar field non-minimally coupled to Gauss-Bonnet and Ricci scalar invariants.
Yunqi Liu +4 more
doaj +1 more source