Results 131 to 140 of about 364,727 (223)

Feynman integral reduction using syzygy-constrained symbolic reduction rules

open access: yesJournal of High Energy Physics
We present a new algorithm for integration-by-parts (IBP) reduction of Feynman integrals with high powers of numerators or propagators, a demanding computational step in evaluating multi-loop scattering amplitudes.
Sid Smith, Mao Zeng
doaj   +1 more source

Dilaton and massive hadrons in a conformal phase

open access: yesJournal of High Energy Physics, 2022
As the number of fermion fields is increased, gauge theories are expected to undergo a transition from a QCD-like phase, characterised by confinement and chiral symmetry breaking, to a conformal phase, where the theory becomes scale-invariant at large ...
Luigi Del Debbio, Roman Zwicky
doaj   +1 more source

Capacity and limitations of US wild meat donation programmes

open access: yesPeople and Nature, EarlyView.
Abstract Historically, sharing of wild harvests to facilitate food security followed concepts of kin selection and reciprocal altruism. However, cultural shifts have reduced access to foods for some populations in modern times. Cultural altruism through sustainably harvested wild meat donation programmes (WDPs) can reduce food and nutritional ...
David S. Mason   +4 more
wiley   +1 more source

Tensor reduction for Feynman integrals with Lorentz and spinor indices

open access: yesJournal of High Energy Physics
We present an efficient graphical approach to construct projectors for the tensor reduction of multi-loop Feynman integrals with both Lorentz and spinor indices in D dimensions.
Jae Goode   +4 more
doaj   +1 more source

Assimilation of machine‐learning‐predicted nitrate to improve the quality of phytoplankton forecasting in the shelf‐sea environment

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
This article demonstrates that assimilating machine‐learning‐derived surface nitrate can improve five‐day phytoplankton forecast substantially within the Met Office operational system for the Northwest European Shelf. We explain the reasons behind this improvement and propose that an online system where machine learning and data assimilation are cycled
Deep S. Banerjee   +2 more
wiley   +1 more source

N=1 Euler Anomaly from RG-dependent metric-Background

open access: yesEPJ Web of Conferences, 2017
We consider N = 1supersymmetric gauge theories in the conformal window. By applying a suitable matter superfield- and Weyl-transformation the renormalisation group running of the theory is absorbed into the metric.
Prochazka Vladimir, Zwicky Roman
doaj   +1 more source

PARABOLIC HIGGS BUNDLES AND -HIGGS BUNDLES [PDF]

open access: yesJournal of the Australian Mathematical Society, 2013
AbstractWe investigate parabolic Higgs bundles and $\Gamma $-Higgs bundles on a smooth complex projective variety.
INDRANIL BISWAS   +2 more
openaire   +1 more source

Analogies and differences between the logic behind statistical hypothesis testing and proofs by contradiction: What can we learn from them?

open access: yesTeaching Statistics, EarlyView.
Abstract Statistical hypothesis testing (SHT) is widely employed across numerous scientific disciplines, and a clear understanding of its underlying logic is essential for the broader scientific community. Here, drawing upon both epistemological and statistical perspectives, we aim to clarify—primarily for educational purposes—the logical relationship ...
Maria Cristina Amoretti   +1 more
wiley   +1 more source

Advances in cholesterol and lipoproteins detection for healthcare: A review

open access: yesVIEW, EarlyView.
Cholesterol is one of the main biomarkers related to the development of cardiovascular diseases. Its detection still relies on traditional methods of analysis, such as gas and liquid chromatographies. Detection of free cholesterol in saliva with redox or enzymatic sensors or detection of lipoproteins in blood with aptamer sensors are currently the most
Jacopo Giaretta   +7 more
wiley   +1 more source

Little Higgs, Non-standard Higgs, No Higgs and All That

open access: yes, 2007
We give a brief review of recent developments in non-supersymmetric models for electroweak symmetry breaking, including little Higgs, composite Higgs and Higgsless theories. The new ideas such as extra dimensions, AdS/CFT correspondence, dimension-deconstruction, and collective symmetry breaking provide us new tools to construct new models.
openaire   +2 more sources

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