Results 51 to 60 of about 110,473 (324)

Squeezing the Axion

The Open Journal of Astrophysics, 2021
We apply the squeezed state formalism to scalar field dark matter (e.g. axion) perturbations generated during inflation. As for the inflationary perturbations, the scalar field state becomes highly squeezed as modes exit the horizon. For as long as $H>m_\
Jondalar L. J. Kuß, David J. E. Marsh
doaj   +1 more source

Static Configurations of Dark Energy and Dark Matter

, 2005
We study static configurations of dark matter coupled to a scalar field responsible for the dark energy of the Universe. The dark matter is modelled as a Fermi gas within the Thomas-Fermi approximation. The mass of the dark matter particles is a function
Barbieri R Hall L J Oliver S J Strumia A, Biswas T Brandenberger R Mazumdar A Multamaki T, Biswas T Mazumdar A, Burkert A, Mainini R Colombo L P L Bonometto S A, Manera M Mota D F, N Brouzakis, N Tetradis, Nunes N J Mota D F, Peebles P J E, Tetradis N, Wetterich C   +11 more
core   +3 more sources

Irreversible thermodynamic description of interacting dark energy - dark matter cosmological models

, 2013
We investigate the interaction between dark energy and dark matter in the framework of irreversible thermodynamics of open systems with matter creation/annihilation.
Harko, Tiberiu, Lobo, Francisco S. N.
core   +1 more source

Unifying dark energy and dark matter with a scalar field [PDF]

EAS Publications Series, 2006
The standard model of cosmology considers the existence of two components of unknown nature, ``dark matter'' and ``dark energy'', which determine the cosmological evolution. Their nature remains unknown, and other models can also be considered. In particular, it may be possible to reinterpret the recent cosmological observations so that the Universe ...
openaire   +2 more sources

Effects of dark matter on the spontaneous scalarization in neutron stars

European Physical Journal C: Particles and Fields
Dark matter, an important portion of compact objects, can influence different phenomena in neutron stars. The spontaneous scalarization in the scalar-tensor gravity has been proposed for neutron stars.
Fahimeh Rahimi, Zeinab Rezaei
doaj   +1 more source

$\phi^2$ as Dark Matter

, 2008
In this paper we consider $\phi^2$ scalar field potential as a candidate to dark matter. If it is an ultralight boson particle, it condensates like a Bose-Einstein system at very early times and forms the basic structure of the Universe.
Alberto Vázquez-González, Alcubierre, Arbey, Arbey, Bernal, Bernal, Bertacca, Cimatti, de Blok, de Blok, Guzmán, Guzmán, Guzmán, Guzmán, Guzmán, Ji, Juan Magaña, Kolb, Lee, Lesgourgues, Liddle, Madsen, Matos, Matos, Matos, Matos, Matos, Matos, Matos, Padmanabhan, Peebles, Peebles, Peebles, Press, Pérez-Lorenzana, Ruffini, Seidel, Seidel, Simon, Sin, Sánchez-Salcedo, Tonatiuh Matos, Turner, Ureña-López   +43 more
core   +1 more source

Scalar field dark matter in clusters of galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2017
One alternative to the cold dark matter (CDM) paradigm is the scalar field dark matter (SFDM) model, which assumes dark matter is a spin-0 ultra-light scalar field (SF) with a typical mass $m\sim10^{-22}\mathrm{eV}/c^2$ and positive self-interactions.
Bernal, Tula, Robles, Victor H., Matos, Tonatiuh   +2 more
openaire   +2 more sources

Bridging the gap: Multi‐stakeholder perspectives of molecular diagnostics in oncology

Molecular Oncology, EarlyView.
Although molecular diagnostics is transforming cancer care, implementing novel technologies remains challenging. This study identifies unmet needs and technology requirements through a two‐step stakeholder involvement. Liquid biopsies for monitoring applications and predictive biomarker testing emerge as key unmet needs. Technology requirements vary by
Jorine Arnouts, Senada Koljenović, Elise Daems, Karolien De Wael, Marc Peeters, Léon C. van Kempen, Greetje Vanhoutte, Karen Zwaenepoel, Timon Vandamme   +8 more
wiley   +1 more source

Class IIa HDACs forced degradation allows resensitization of oxaliplatin‐resistant FBXW7‐mutated colorectal cancer

Molecular Oncology, EarlyView.
HDAC4 is degraded by the E3 ligase FBXW7. In colorectal cancer, FBXW7 mutations prevent HDAC4 degradation, leading to oxaliplatin resistance. Forced degradation of HDAC4 using a PROTAC compound restores drug sensitivity by resetting the super‐enhancer landscape, reprogramming the epigenetic state of FBXW7‐mutated cells to resemble oxaliplatin ...
Vanessa Tolotto, Nicolò Gualandi, Ylenia Cortolezzis, Raffaella Picco, Monica Colitti, Francesca D'Este, Mariachiara Gani, Wayne W. Hancock, Giovanni Terrosu, Cristina Degrassi, Francesca Agostini, Claudio Brancolini, Luigi E. Xodo, Eros Di Giorgio   +13 more
wiley   +1 more source

Dark Matter and Dark Energy from a single scalar field

, 2005
Poster presented at the XXII Texas Symposium on Relativistic Astrophysics, Stanford University, December 2004, (TSRA04, PSN1105) 5 pages, 6 ...
Roberto Mainini, L. P. L. Colombo, S. A. Bonometto   +2 more
openalex   +4 more sources