Zobrazeno 1 - 10
of 22 287
pro vyhledávání: '"Powers, A. R."'
Autor:
Pain, Jean-Christophe
In a recent paper [J.-C. Pain, Opt. Spectrosc. ${\bf 218}$, 1105-1109 (2020)], we discussed the link between expectation values of powers of $r$ and Clebsch-Gordan coefficients. In this short note we provide additional information, reminding that suc
Externí odkaz:
http://arxiv.org/abs/2101.07872
Autor:
Pain, Jean-Christophe
It is shown that, in the relativistic hydrogenic approximation, expectation values of the type $\langle n\ell j|r^k|n\ell j\rangle$ can be expressed in terms of Clebsch-Gordan coefficients or $3jm$ symbols. This generalizes the results obtained by Va
Externí odkaz:
http://arxiv.org/abs/2003.14197
Previous studies on peristalsis, the pumping of fluid along a channel by wave-like displacements of the channel walls, have shown that the elastic properties of the channel and the peristaltic wave shape can influence the flow rate. Motivated by the
Externí odkaz:
http://arxiv.org/abs/2410.17013
Autor:
Powers, Michael R., Xu, Jiaxin
Parametric statistical methods play a central role in analyzing risk through its underlying frequency and severity components. Given the wide availability of numerical algorithms and high-speed computers, researchers and practitioners often model the
Externí odkaz:
http://arxiv.org/abs/2407.19218
Autor:
Betts, Robert J.
Every positive integer greater than a positive integer $r$ can be written as an integer that is the sum of powers of $r$. Here we use this to prove the conjecture posed by Ronald Graham, B. Rothschild and Joel Spencer back in the nineteen nineties, t
Externí odkaz:
http://arxiv.org/abs/1208.4268
Publikováno v:
In Applied Mathematics and Computation 15 August 2015 265:409-413
Autor:
LARSEN, FLEMMING
Publikováno v:
Journal of Operator Theory, 2002 Jan 01. 47(1), 197-212.
Externí odkaz:
https://www.jstor.org/stable/24715533
Autor:
Rajaraman, Arvind
We discuss theories with inverse powers of the Ricci scalar. We find the exact metric produced by point masses in these theories, and show that the gravitational force between static objects is consistent with experiments.
Comment: References ad
Comment: References ad
Externí odkaz:
http://arxiv.org/abs/astro-ph/0311160
Autor:
Dick, Rainer
Publikováno v:
Gen.Rel.Grav. 36 (2004) 217-224
I reconsider the problem of the Newtonian limit in nonlinear gravity models in the light of recently proposed models with inverse powers of the Ricci scalar. Expansion around a maximally symmetric local background with positive curvature scalar R_0 g
Externí odkaz:
http://arxiv.org/abs/gr-qc/0307052
Autor:
Mourgues-Codern, Catalina, Benrimoh, David, Gandhi, Jay, Farina, Emily A., Vin, Raina, Zamorano, Tihare, Parekh, Deven, Malla, Ashok, Joober, Ridha, Lepage, Martin, Iyer, Srividya N., Addington, Jean, Bearden, Carrie E., Cadenhead, Kristin S., Cornblatt, Barbara, Keshavan, Matcheri, Stone, William S., Mathalon, Daniel H., Perkins, Diana O., Walker, Elaine F., Cannon, Tyrone D., Woods, Scott W., Shah, Jai L., Powers, Albert R.
Hallucinations and delusions are often grouped together within the positive symptoms of psychosis. However, recent evidence suggests they may be driven by distinct computational and neural mechanisms. Examining the time course of their emergence may
Externí odkaz:
http://arxiv.org/abs/2402.13428