Results 61 to 70 of about 1,667,560 (344)
, 2015 In single-component theories of dark matter, the $2\to 2$ amplitudes for dark-matter production, annihilation, and scattering can be related to each other through various crossing symmetries.
Dienes, Keith R. +3 more
core +1 more source
Superconducting Detectors for Super Light Dark Matter [PDF]
, 2015 We propose and study a new class of superconducting detectors which are sensitive to O(meV) electron recoils from dark matter-electron scattering. Such devices could detect dark matter as light as the warm dark matter limit, mX > keV. We compute the rate
Hochberg, Yonit +2 more
core +3 more sources
Time after time – circadian clocks through the lens of oscillator theory
FEBS Letters, EarlyView.Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo +2 more
wiley +1 more source
A delayed 400 GeV photon from GRB 221009A and implication on the intergalactic magnetic field
Nature CommunicationsLarge High Altitude Air Shower Observatory has detected 0.2 − 13 TeV emission of GRB 221009A within 2000 s since the trigger. Here we report the detection of a 400 GeV photon, without accompanying prominent low-energy emission, by Fermi Large Area ...
Zi-Qing Xia +3 more
doaj +1 more source
DARK MATTER, AND ITS DARKNESS [PDF]
International Journal of Modern Physics D, 2006 Assuming the validity of the general relativistic description of gravitation on astrophysical and cosmological length scales, we analytically infer that the Friedmann–Robertson–Walker cosmology with Einsteinian cosmological constant, and a vanishing spatial curvature constant, unambiguously requires a significant amount of dark matter.
openaire +3 more sources
Physical Review D, 2019 We highlight a new connection between the Standard Model hierarchy problem and the dark matter sector. The key piece is the relaxion field, which besides scanning the Higgs mass and setting the electroweak scale, also constitutes the observed dark matter abundance of the universe. The relaxation mechanism is realized during inflation, and the necessary
Fonseca, Nayara, Morgante, Enrico
openaire +5 more sources
The Growth of Structure in Interacting Dark Energy Models [PDF]
, 2009 If dark energy interacts with dark matter, there is a change in the background evolution of the universe, since the dark matter density no longer evolves as a^{-3}. In addition, the non-gravitational interaction affects the growth of structure.
Caldera-Cabral, Gabriela +2 more
core +2 more sources
FEBS Letters, EarlyView.Cryptochrome and PAS/LOV proteins play intricate roles in circadian clocks where they act as both sensors and mediators of protein–protein interactions. Their ubiquitous presence in signaling networks has positioned them as targets for small‐molecule therapeutics. This review provides a structural introduction to these protein families.
Eric D. Brinckman +2 more
wiley +1 more source
Classification of three-family flavoured DFSZ axion models that have no domain wall problem
Journal of High Energy PhysicsWe provide an exhaustive classification of three-family DFSZ axion models that have no cosmological domain wall problem. This result is obtained by making the Peccei-Quinn symmetry flavour dependent in certain specific ways, thus reinforcing a possible ...
Peter Cox +4 more
doaj +1 more source
Effect of the pion field on the distributions of pressure and shear in the proton
Physics Letters B, 2022 In light of recent experimental progress in determining the pressure and shear distributions in the proton, these quantities are calculated in a model with confined quarks supplemented by the pion field required by chiral symmetry.
Shiryo Owa, A.W. Thomas, X.G. Wang
doaj +1 more source