Results 21 to 30 of about 13,257,834 (322)

Universal lower bound on orbital periods

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
It is proved, using the curved line element of a spherically symmetric charged object in general relativity and the Schwinger discharge mechanism of quantum field theory, that the orbital periods $$T_{\infty }$$ T ∞ of test particles around central ...
Shahar Hod
doaj   +1 more source

Symmetry-Like Relation of Relative Entropy Measure of Quantum Coherence

open access: yesEntropy, 2020
Quantum coherence is an important physical resource in quantum information science, and also as one of the most fundamental and striking features in quantum physics. To quantify coherence, two proper measures were introduced in the literature, the one is
Chengyang Zhang, Zhihua Guo, Huaixin Cao
doaj   +1 more source

Option Pricing, Zero Lower Bound, and COVID-19

open access: yesRisks, 2021
This paper provides a quantitative assessment of equity options priced at the Zero Lower Bound, i.e., when interest rates are set essentially to zero. We obtain closed form formulas for American options when the Zero Lower Bound policy holds.
Giacomo Morelli, Lea Petrella
doaj   +1 more source

Proportionality’s Lower Bound

open access: yesCriminal Law and Philosophy, 2021
Many philosophers have raised difficulties for any attempt to proportion punishment severity to crime seriousness. One reason for this may be that offering a full theory of proportionality is simply too ambitious. I suggest a more modest project: setting
J. Manwaring
semanticscholar   +1 more source

A lower bound on web services composition [PDF]

open access: yesLogical Methods in Computer Science, 2008
A web service is modeled here as a finite state machine. A composition problem for web services is to decide if a given web service can be constructed from a given set of web services; where the construction is understood as a simulation of the ...
Anca Muscholl, Igor Walukiewicz
doaj   +1 more source

Lower bound on the primordial black hole merger rate [PDF]

open access: yesPhysical Review D, 2019
We derive a lower bound on the merger rate of primordial black hole (PBH) binaries by estimating the maximal fraction of binaries that were perturbed between formation in the early universe and merger, and computing a conservative merger rate of ...
V. Vaskonen, H. Veermäe
semanticscholar   +1 more source

Revisiting the Lower Bound on Tidal Deformability Derived by AT 2017gfo [PDF]

open access: yesAstrophysical Journal, 2019
We revisit the lower bound on binary tidal deformability imposed by a luminous kilonova/macronova, AT 2017gfo, by numerical-relativity simulations of models that are consistent with gravitational waves from the binary neutron star merger GW170817 ...
K. Kiuchi   +3 more
semanticscholar   +1 more source

Several Functions Originating from Fisher–Rao Geometry of Dirichlet Distributions and Involving Polygamma Functions

open access: yesMathematics, 2023
In this paper, the authors review and survey some results published since 2020 about (complete) monotonicity, inequalities, and their necessary and sufficient conditions for several newly introduced functions involving polygamma functions and originating
Feng Qi, Ravi Prakash Agarwal
doaj   +1 more source

Bounds for blow-up time in a semilinear pseudo-parabolic equation with nonlocal source

open access: yesJournal of Inequalities and Applications, 2016
This paper considers the following semilinear pseudo-parabolic equation with a nonlocal source: u t − △ u t − △ u = u p ( x , t ) ∫ Ω k ( x , y ) u p + 1 ( y , t ) d y , $$ u_{t}-\triangle u_{t}-\triangle u=u^{p}(x,t) \int_{\Omega}k(x,y)u^{p+1}(y,t)\,dy,
Yang Lu, Liang Fei
doaj   +1 more source

Average Rate Analysis of Cooperative NOMA Aided Underwater Optical Wireless Systems

open access: yesIEEE Open Journal of the Communications Society, 2021
In this paper, we consider a cooperative non-orthogonal multiple access (NOMA) aided underwater optical wireless system in which the source transmits to two users where the near user serves as a relay node to the far user. Our proposed system consists of
Kapila W. S. Palitharathna   +4 more
doaj   +1 more source

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