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Deriving Grover's lower bound from simple physical principles [PDF]

open access: yesNew Journal of Physics, 2016
Grover's algorithm constitutes the optimal quantum solution to the search problem and provides a quadratic speed-up over all possible classical search algorithms.
Ciarán M Lee, John H Selby
doaj   +3 more sources

Lower Bounds [PDF]

open access: yesProceedings of the 2016 ACM Conference on Innovations in Theoretical Computer Science, 2016
A general and long-standing belief in the proof complexity community asserts that there is a close connection between progress in lower bounds for Boolean circuits and progress in proof size lower bounds for strong propositional proof systems. Although there are famous examples where a transfer from ideas and techniques from circuit complexity to proof
Olaf Beyersdorff   +2 more
  +4 more sources

Raising NP lower bounds to parallel NP lower bounds [PDF]

open access: yesACM SIGACT News, 1997
This issue's column surveys recent progress in raising NP-hardness lower bounds to parallel NP lower bounds. Complexity theorists will learn that Lewis Carroll (unbeknownst to himself) was a fellow complexity theorist. So that readers specializing in algorithms don't feel left out, let me mention that they are in even better company.
Hemaspaandra, Edith   +2 more
openaire   +2 more sources

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

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

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

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

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

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