Results 271 to 280 of about 77,713 (311)
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Journal of Physics G: Nuclear Physics, 1982
Discusses the problem of gauge hierarchy in grand unified theories using a toy model with O(N) symmetry to illustrate the authors' statements. They show that there is no escape from the unnatural adjustment of coupling constants, made only after the computation to several orders in perturbation theory is performed. They comment on the proposals of some
A A Natale, R C Shellard
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Discusses the problem of gauge hierarchy in grand unified theories using a toy model with O(N) symmetry to illustrate the authors' statements. They show that there is no escape from the unnatural adjustment of coupling constants, made only after the computation to several orders in perturbation theory is performed. They comment on the proposals of some
A A Natale, R C Shellard
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Hierarchies of complete problems
Acta Informatica, 1976An attempt is made to present a framework for the diverse complete problems that have been found. A new concept--a Hierarchy of Complete Problems is defined. Several hierarchies in various domains such as graph theory, automata theory, theorem proving and games are established.
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A hierarchy of Sturm–Liouville problems
Mathematical Methods in the Applied Sciences, 2003AbstractSturm–Liouville equations will be considered where the boundary conditions depend rationally on the eigenvalue parameter. Such problems apply to a variety of engineering situations, for example to the stability of rotating axles. Classesof these problems will be isolated with a rather rich spectral structure, for example oscillation, comparison
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The Compatibility Problem for Hierarchies
IFAC Proceedings Volumes, 1996Abstract A survey on the notion of hierarchy covers a large scope of fundamental sources. Cultural, religious and philosophical contexts have used it since ancient times as a concept essential for civilization. There it comprises also forms, like structure and process, which are tom apart in modern times. The author expresses bewildering over the way
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The Hierarchy Problem and the Cosmological Constant Problem Revisited
2018Foundations of physics 49(9), 915 - 971 (2019).
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Problem hierarchies in continual learning
2022Research in Machine Learning (ML) can be viewed as a quest to develop increasingly general algorithmic solutions (methods) for increasingly challenging research problems (settings). From this perspective, progress can be realized in two ways: by introducing better methods for current settings, or by proposing interesting new settings for the research ...
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Hierarchy problem and BSM physics
Pramana, 2017The ‘hierarchy problem’ plagues the Standard Model of particle physics. The source of this problem is our inability to answer the following question: Why is the Higgs mass so much below the GUT or Planck scale? A brief description about how ‘supersymmetry’ and ‘composite Higgs’ address this problem is given here.
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Application of Constraint Hierarchy to Timetabling Problems
2002zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Yakhno, Tatyana, Tekin, Evren
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Topology knots and hierarchy problem
2019Many approaches to quantum gravity consider the revision of the space-time geometry and the structure of elementary particles. One of the main candidates is string theory. It is possible that this theory will be able to describe the problem of hierarchy, provided that there is an appropriate Calabi-Yau geometry.
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