Results 31 to 40 of about 1,559,551 (373)

Inverted oscillator [PDF]

open access: yesPhysica Scripta, 2006
The inverted harmonic oscillator problem is investigated quantum mechanically. The exact wave function for the confined inverted oscillator is obtained and it is shown that the associated energy eigenvalues are discrete and it is given as a linear function of the quantum number $n$.
Yüce, Cem, Kılıç, Abidin, Coruh, A.
openaire   +2 more sources

Multidecadal climate oscillations during the past millennium driven by volcanic forcing

open access: yesScience, 2021
A volcanic source of variation The Atlantic Multidecadal Oscillation (AMO), a 50- to 70-year quasiperiodic variation of climate centered in the North Atlantic region, was long thought to be an internal oscillation of the climate system. Mann et al.
M. Mann   +3 more
semanticscholar   +1 more source

Oscillating shells and oscillating balls in AdS [PDF]

open access: yesJournal of High Energy Physics, 2017
23 pages, 5 figures; v2: refs added; v3: JHEP ...
Banerjee, Avik   +3 more
openaire   +4 more sources

Frequency versus relaxation oscillations in a semiconductor laser with coherent filtered optical feedback [PDF]

open access: yes, 2005
We investigate the dynamics of a semiconductor laser subject to coherent delayed filtered optical feedback. A systematic bifurcation analysis reveals that this system supports two fundamentally different types of oscillations, namely relaxation ...
Erzgraber, H   +4 more
core   +3 more sources

Oscillators and Oscillations in the Basal Ganglia [PDF]

open access: yesThe Neuroscientist, 2014
What is the meaning of an action potential? There must be different answers for neurons that fire spontaneously, even in the absence of synaptic input, and those driven to fire from a resting membrane potential. In spontaneously firing neurons, the occurrence of the next action potential is guaranteed; only variations in its timing can carry the ...
openaire   +3 more sources

Neural Oscillations in Aversively Motivated Behavior

open access: yesFrontiers in Behavioral Neuroscience, 2022
Fear and anxiety-based disorders are highly debilitating and among the most prevalent psychiatric disorders. These disorders are associated with abnormal network oscillations in the brain, yet a comprehensive understanding of the role of network ...
Michael S. Totty, Stephen Maren
doaj   +1 more source

Finite oscillator models: the Hahn oscillator [PDF]

open access: yesJournal of Physics A: Mathematical and Theoretical, 2011
A new model for the finite one-dimensional harmonic oscillator is proposed based upon the algebra u(2)_ . This algebra is a deformation of the Lie algebra u(2) extended by a parity operator, with deformation parameter . A class of irreducible unitary representations of u(2)_ is constructed.
Jafarov, Elchin   +2 more
openaire   +4 more sources

Conductance oscillations of a spin-orbit stripe with polarized contacts [PDF]

open access: yes, 2010
We investigate the linear conductance of a stripe of spin-orbit interaction in a 2D electron gas; that is, a 2D region of length $\ell$ along the transport direction and infinite in the transverse one in which a spin-orbit interaction of Rashba type is ...
A. Shekhter   +34 more
core   +4 more sources

Feature Detection in Visual Cortex during Different Functional States

open access: yesFrontiers in Computational Neuroscience, 2017
Cortical activity exhibits distinct characteristics in different functional states. In awake behaving animals it shows less synchrony, while in rest or sleeping state cortical activity is most synchronous.
Misha Tsodyks   +5 more
doaj   +1 more source

Exponentially fitted block backward differentiation formulas for pricing options

open access: yesCogent Economics & Finance, 2021
A family of Exponentially Fitted Block Backward Differentiation Formulas (EFBBDFs) whose coefficients depend on a parameter and step-size is developed and implemented on the Black–Scholes partial differential equation (PDE) for the valuation of options ...
S. N. Jator   +3 more
doaj   +1 more source

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