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Thompson, Charles; Chandra, Kavitha; Mulpur, S.; Davis, Jimmie

doi:10.1023/a:1016610910236

Cited by 4 publications

(1 citation statement)

References 14 publications

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“…In particular, in Grand Unified Theories the variation of α is related to that of energy scale of Quantum Chromodynamics, whence the nucleon masses necessarily vary when measured in an energy scale that is independent of QCD (such as the electron mass). It follows that we should expect a varying proton-to-electron mass ratio, µ = m p /m e , which can be probed with H 2 [16] and other molecules.…”

Section: Fundamental Couplingsmentioning

confidence: 99%

Fundamental cosmology in the E-ELT era: the status and future role of tests of fundamental coupling stability

Martins

2014

Gen Relativ Gravit

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The observational evidence for the recent acceleration of the universe demonstrates that canonical theories of cosmology and particle physics are incomplete-if not incorrect-and that new physics is out there, waiting to be discovered. The most fundamental task for the next generation of astrophysical facilities is therefore to search for, identify and ultimately characterise this new physics. Here we highlight recent efforts along these lines, mostly focusing on ongoing work by CAUP's Dark Side Team aiming to develop some of the science case and optimise observational strategies for forthcoming facilities. The discussion is centred on tests of the stability of fundamental couplings (since the provide a direct handle on new physics), but synergies with other probes are also briefly considered. The goal is to show how a new generation of precision consistency tests of the standard paradigm will soon become possible.

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Section: Fundamental Couplingsmentioning

confidence: 99%

Fundamental cosmology in the E-ELT era: the status and future role of tests of fundamental coupling stability

Martins

2014

Gen Relativ Gravit

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Statistical Multiplexing

Chandra

2003

Wiley Encyclopedia of Telecommunications

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Statistical multiplexers play a central role in the design of high‐speed multiservice telecommunications networks. As network links reach capacities of terabits per second, the multiplexing of a large number variable rate voice, video and data sources on a common channel can achieve significant savings in the bandwidth consumed by each source. This resource sharing paradigm must be examined by considering the traffic characteristics, performance requirements and multiplexing system parameters. Traffic on broadband networks is characterized by complex features that include correlation over many time scales, significant dispersion about the mean rate, nonstationary variations in average rate and variance and in some cases deterministic fluctuations. These features render classical Poisson traffic based approaches to performance analysis inaccurate. This paper presents a overview of new traffic models and performance analysis techniques for statistical multiplexing systems. The application of renewal processes, Markov chains, time‐series models and self‐similar processes as traffic models are discussed. Analytic, computational and approximate performance analyses of statistical multiplexers are reviewed. The design of admission control algorithms for controlling statistical multiplexing performance using moment matching methods, fluid flow approximations, large‐deviation principles and effective bandwidth approximations are discussed.

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Space Reduction for a Class of Multidimensional Markov Chains: A Summary and Some Applications

He¹,

Alfa²

2018

INFORMS Journal on Computing

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In this paper, we present examples of a class of Markov chains that occur frequently, but whose associated matrices are a challenge to construct efficiently. These are Markov chains that arise as a result of several identical Markov chains running in parallel. Specifically for the cases considered, both the infinitesimal generator matrix for the continuous case, and more so the transition probability matrix for the discrete equivalent, are complex to construct effectively and efficiently. We summarize the algorithms for constructing the associated matrices and present examples of applications, ranging from special queueing problems to reliability issues and order statistics. MATLAB subroutines are provided in an online supplement for the implementation of the algorithms.

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Untitled

Cited by 4 publications

References 14 publications

Fundamental cosmology in the E-ELT era: the status and future role of tests of fundamental coupling stability

Fundamental cosmology in the E-ELT era: the status and future role of tests of fundamental coupling stability

Statistical Multiplexing

Space Reduction for a Class of Multidimensional Markov Chains: A Summary and Some Applications

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