Results 21 to 30 of about 5,883,213 (294)

New solutions to the hierarchy problem [PDF]

Brazilian Journal of Physics, 2007
Presented at the First Latin American Workshop on High Energy Physics, Porto Alegre, December 3-5 ...
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Model-Checking Problems as a Basis for Parameterized Intractability [PDF]

Logical Methods in Computer Science, 2005
Most parameterized complexity classes are defined in terms of a parameterized version of the Boolean satisfiability problem (the so-called weighted satisfiability problem). For example, Downey and Fellow's W-hierarchy is of this form.
Joerg Flum, Martin Grohe
doaj   +1 more source

A Machian solution of the hierarchy problem [PDF]

The European Physical Journal C, 2008
The new interpretation of Mach's principle of mass of a particle being a measure of the interactions of this particle with all other gravitating particles inside its causal spheres is introduced. It is shown that within some alternative model of gravitation that incorporates this principle, the Machian influence of the universe can reduce Planck's ...
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Optimization problems and the polynomial hierarchy

Theoretical Computer Science, 1981
AbstractIt is demonstrated that such problems as the symmetric Travelling Salesman Problem, Chromatic Number Problem, Maximal Clique Problem and a Knapsack Packing Problem are in the ΔP2 level of PH and no lower if ∑P1 ≠ ΠP1, or NP≠co-NP. This shows that these problems cannot be solved by polynomial reductions that use only positive information from an
E. W. Leggett Jr., Daniel J. Moore
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The real gauge hierarchy problem

Physics Letters B, 1981
Abstract We discuss the problem of generating two vastly different mass scales through spontaneous symmetry breaking. We find that to all orders in perturbation theory this can only be achieved if there is a non-trivial relation between the couplings of the theory.
Smith, C, Ross, G
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A Conservation Law Treatment of Nonlinear KdV Hierarchies

Journal of Mathematics, 2022
We study the hierarchy commonly defined as an infinite sequence of partial differential equations which begins with the Korteweg–de Vries equation and its modified version. An important feature of the hierarchy is its highly nonlinear property.
Sameerah Jamal, Rivoningo Maphanga
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ifct2017/hierarchy: Tree-like hierarchy of nutrients, and its components

, 2022
Tree-like hierarchy of nutrients, and its components. Node.js, Files. This is part of package ifct2017. Online database: ifct2017.github.io. const hierarchy = require('@ifct2017/hierarchy'); // hierarchy(query) // → {parents, ancestry, children} if ...
Subhajit Sahu
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An Infinitely Old Universe with Planck Fields Before and After the Big Bang

Universe
The Robertson–Walker minimum length (RWML) theory considers stochastically perturbed spacetime to describe an expanding universe governed by geometry and diffusion.
Dragana Pilipović
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Electroweak precision tests of composite Higgs models

Journal of High Energy Physics, 2023
We study constraints on Composite Higgs models with fermion partial compositeness from electroweak precision measurements, including the 2022 W-boson mass result from the CDF collaboration.
Mads T. Frandsen, Martin Rosenlyst
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Towards a non-perturbative approach to the Hierarchy problem

EPJ Web of Conferences, 2018
In this report, based on [1], we suggest that the hierarchy between the Electroweak (EW) and the Planck scales can emerge due to a nonperturbative effect that relates low-energy and strong-gravity physics.
Shkerin Andrey
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