Results 61 to 70 of about 524,705 (296)
Dispersive Regimes of the Dicke Model
Scientific Reports, 2017 We study two dispersive regimes of the Dicke model in the dynamics of N two-level atoms interacting with a bosonic mode for long interaction times. Firstly, we analyze the model for the regime in which the qubit frequencies are equal and smaller than the
Diego Barberena +2 more
doaj +1 more source
Neural Cross-Frequency Coupling Functions in Sleep
Neuroscience, 2023 The human brain presents a heavily connected complex system. From a relatively fixed anatomy, it can enable a vast repertoire of functions. One important brain function is the process of natural sleep, which alters consciousness and voluntary muscle activity. On neural level, these alterations are accompanied by changes of the brain connectivity.
Manasova, Dragana, Stankovski, Tomislav
openaire +3 more sources
FEBS Letters, EarlyView.This perspective highlights emerging insights into how the circadian transcription factor CLOCK:BMAL1 regulates chromatin architecture, cooperates with other transcription factors, and coordinates enhancer dynamics. We propose an updated framework for how circadian transcription factors operate within dynamic and multifactorial chromatin landscapes ...
Xinyu Y. Nie, Jerome S. Menet
wiley +1 more source
Cortical cross-frequency coupling predicts perceptual outcomes [PDF]
NeuroImage, 2013 Functional networks are comprised of neuronal ensembles bound through synchronization across multiple intrinsic oscillatory frequencies. Various coupled interactions between brain oscillators have been described (e.g., phase-amplitude coupling), but with little evidence that these interactions actually influence perceptual sensitivity.
I C, Fiebelkorn +5 more
openaire +2 more sources
Mechanisms of parasite‐mediated disruption of brain vessels
FEBS Letters, EarlyView.Parasites can affect the blood vessels of the brain, often causing serious neurological problems. This review explains how different parasites interact with and disrupt these vessels, what this means for brain health, and why these processes matter. Understanding these mechanisms may help us develop better ways to prevent or treat brain infections in ...
Leonor Loira +3 more
wiley +1 more source
Double-Electromagnetically Induced Transparency in a Y-type atomic system
, 2013 We study the absorption and dispersion properties of a weak tunable probe field in a four-level Y-type atomic system driven by two strong laser (coupling) fields within the framework of density matrix formalism.
Fratini, F., Iablonskyi, D., Safari, L.
core +1 more source
Evidence of resonant mode coupling and the relationship between low and high frequencies in a rapidly rotating A star [PDF]
, 2014 In the theory of resonant mode coupling, the parent and child modes are directly related in frequency and phase. The oscillations present in the fast rotating Delta Scuti star KIC 8054146 allow us to test the most general and generic aspects of such a ...
Breger, Michel, Montgomery, Michael H.
core +2 more sources
Narrowband biphotons with polarization-frequency-coupled entanglement [PDF]
Physical Review A, 2015 We demonstrate the generation of narrowband biphotons with polarization-frequency coupled hy- perentanglement from spontaneous four-wave mixing in cold atoms. The coupling between polariza- tion and frequency is realized through a frequency shifter and linear optics.
Shu, Chi +4 more
openaire +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
Simulation and Experiment study of ball defects of a two rotors-ball bearing-gear coupling system
MATEC Web of Conferences, 2016 A model of a two rotors-ball bearing-gear coupling systems which considering ball defects on bearing was established. In this model the meshing force of gear coupling and ball defects on bearing was considered.
Lu Xin +4 more
doaj +1 more source